www.britannica.com Open in urlscan Pro
104.18.4.110 Public Scan

Go To Rescan
Add Verdict Report

URL:
https://www.britannica.com/science/electromagnetic-spectrum
Submission: On April 14 via api (April 14th 2022, 10:57:27 pm UTC) from US — Scanned from DE

Summary HTTP 117 Redirects Links 9 Behaviour Indicators

Summary

This website contacted 34 IPs in 6 countries across 28 domains to perform 117 HTTP transactions. The main IP is 104.18.4.110, located in and belongs to CLOUDFLARENET, US. The main domain is www.britannica.com. The Cisco Umbrella rank of the primary domain is 17395.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on March 13th 2022. Valid for: a year.

This is the only time www.britannica.com was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
4	104.18.4.110 104.18.4.110	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a00:1450:400... 2a00:1450:4001:810::200a	15169 (GOOGLE) (GOOGLE)
15	108.157.4.109 108.157.4.109	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:4001:829::200e	15169 (GOOGLE) (GOOGLE)
1	2600:9000:215... 2600:9000:2156:b200:1:a3fa:7cc0:93a1	() ()
3	2a00:1450:400... 2a00:1450:4001:82a::2008	15169 (GOOGLE) (GOOGLE)
1	2606:4700:440... 2606:4700:440e::6812:2fe6	() ()
5	143.204.98.126 143.204.98.126	16509 (AMAZON-02) (AMAZON-02)
5	34.96.102.137 34.96.102.137	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:811::2003	15169 (GOOGLE) (GOOGLE)
1	40.118.73.208 40.118.73.208	8075 (MICROSOFT...) (MICROSOFT-CORP-MSN-AS-BLOCK)
2	18.66.248.71 18.66.248.71	16509 (AMAZON-02) (AMAZON-02)
1	23.20.129.87 23.20.129.87	14618 (AMAZON-AES) (AMAZON-AES)
1	199.232.136.157 199.232.136.157	54113 (FASTLY) (FASTLY)
2	2a03:2880:f02... 2a03:2880:f02d:12:face:b00c:0:3	32934 (FACEBOOK) (FACEBOOK)
17	143.204.98.28 143.204.98.28	16509 (AMAZON-02) (AMAZON-02)
1	2600:9000:236... 2600:9000:236e:c800:1d:8c8c:47c0:93a1	() ()
1	2a00:1450:400... 2a00:1450:4001:82f::200a	15169 (GOOGLE) (GOOGLE)
3	2600:9000:215... 2600:9000:2156:ce00:11:2a6a:9480:93a1	() ()
8	108.156.255.177 108.156.255.177	16509 (AMAZON-02) (AMAZON-02)
3	142.250.186.162 142.250.186.162	15169 (GOOGLE) (GOOGLE)
2	54.173.84.57 54.173.84.57	14618 (AMAZON-AES) (AMAZON-AES)
5	2a00:1450:400... 2a00:1450:4001:831::200e	15169 (GOOGLE) (GOOGLE)
1	104.244.42.131 104.244.42.131	13414 (TWITTER) (TWITTER)
1	104.244.42.5 104.244.42.5	13414 (TWITTER) (TWITTER)
2	2600:9000:224... 2600:9000:224a:b400:16:f82a:8600:93a1	() ()
2	2a03:2880:f12... 2a03:2880:f12d:83:face:b00c:0:25de	32934 (FACEBOOK) (FACEBOOK)
1	2600:9000:215... 2600:9000:2156:7600:1:a3fa:7cc0:93a1	() ()
2	151.101.129.194 151.101.129.194	54113 (FASTLY) (FASTLY)
1	46.105.202.126 46.105.202.126	16276 (OVH) (OVH)
20	108.157.4.34 108.157.4.34	16509 (AMAZON-02) (AMAZON-02)
1	2a00:1450:400... 2a00:1450:400c:c07::9d	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:830::2004	15169 (GOOGLE) (GOOGLE)
1	2a00:1450:400... 2a00:1450:4001:82f::2003	15169 (GOOGLE) (GOOGLE)
117	34

4 104.18.4.110 (None, )

ASN13335 (CLOUDFLARENET, US)

www.britannica.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:810::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.googleapis.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

15 108.157.4.109 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-108-157-4-109.dus51.r.cloudfront.net

cdn.britannica.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:829::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.googleoptimize.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2600:9000:2156:b200:1:a3fa:7cc0:93a1 (United States)

ASN- ()

content.jwplatform.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2a00:1450:4001:82a::2008 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.googletagmanager.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2606:4700:440e::6812:2fe6 (United States)

ASN- ()

static.cloudflareinsights.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

5 143.204.98.126 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-143-204-98-126.fra50.r.cloudfront.net

ads.adthrive.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

5 34.96.102.137 (Kansas City, United States)

ASN15169 (GOOGLE, US)
PTR: 137.102.96.34.bc.googleusercontent.com

dev.visualwebsiteoptimizer.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:811::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

fonts.gstatic.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 40.118.73.208 (Amsterdam, Netherlands)

ASN8075 (MICROSOFT-CORP-MSN-AS-BLOCK, US)

insitez.blob.core.windows.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 18.66.248.71 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-18-66-248-71.dus51.r.cloudfront.net

widget.surveymonkey.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 23.20.129.87 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-23-20-129-87.compute-1.amazonaws.com

webstats.eb.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 199.232.136.157 (Frankfurt am Main, Germany)

ASN54113 (FASTLY, US)

static.ads-twitter.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a03:2880:f02d:12:face:b00c:0:3 (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)

connect.facebook.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

17 143.204.98.28 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-143-204-98-28.fra50.r.cloudfront.net

bc-script.britannica.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2600:9000:236e:c800:1d:8c8c:47c0:93a1 (United States)

ASN- ()

cdn-magiclinks.trackonomics.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:82f::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

ajax.googleapis.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 2600:9000:2156:ce00:11:2a6a:9480:93a1 (United States)

ASN- ()

gdpr-wrapper.privacymanager.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

8 108.156.255.177 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-108-156-255-177.dus51.r.cloudfront.net

c.amazon-adsystem.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

3 142.250.186.162 (United States)

ASN15169 (GOOGLE, US)
PTR: fra24s08-in-f2.1e100.net

securepubads.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 54.173.84.57 (Ashburn, United States)

ASN14618 (AMAZON-AES, US)
PTR: ec2-54-173-84-57.compute-1.amazonaws.com

encyclopediabritannica.blueconic.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

5 2a00:1450:4001:831::200e (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google-analytics.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 104.244.42.131 (United States)

ASN13414 (TWITTER, US)

analytics.twitter.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 104.244.42.5 (United States)

ASN13414 (TWITTER, US)

t.co	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2600:9000:224a:b400:16:f82a:8600:93a1 (United States)

ASN- ()

gdpr.privacymanager.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 2a03:2880:f12d:83:face:b00c:0:25de (Frankfurt am Main, Germany)

ASN32934 (FACEBOOK, US)

www.facebook.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2600:9000:2156:7600:1:a3fa:7cc0:93a1 (United States)

ASN- ()

cdn.jwplayer.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

2 151.101.129.194 (United States)

ASN54113 (FASTLY, US)

confiant-integrations.global.ssl.fastly.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 46.105.202.126 (France)

ASN16276 (OVH, FR)

cdn.id5-sync.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

20 108.157.4.34 (United States)

ASN16509 (AMAZON-02, US)
PTR: server-108-157-4-34.dus51.r.cloudfront.net

cmp-consent-tool.privacymanager.io	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:400c:c07::9d (Brussels, Belgium)

ASN15169 (GOOGLE, US)

stats.g.doubleclick.net	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:830::2004 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google.com	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:82f::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

www.google.de	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

	Apex Domain Subdomains	Transfer
36	britannica.com www.britannica.com — Cisco Umbrella Rank: 17395 cdn.britannica.com — Cisco Umbrella Rank: 11387 bc-script.britannica.com — Cisco Umbrella Rank: 22133	849 KB
25	privacymanager.io gdpr-wrapper.privacymanager.io — Cisco Umbrella Rank: 14556 gdpr.privacymanager.io — Cisco Umbrella Rank: 16606 cmp-consent-tool.privacymanager.io — Cisco Umbrella Rank: 32018	670 KB
8	amazon-adsystem.com c.amazon-adsystem.com — Cisco Umbrella Rank: 302	43 KB
5	google-analytics.com www.google-analytics.com — Cisco Umbrella Rank: 37	21 KB
5	visualwebsiteoptimizer.com dev.visualwebsiteoptimizer.com — Cisco Umbrella Rank: 4937	66 KB
5	adthrive.com ads.adthrive.com — Cisco Umbrella Rank: 5304	242 KB
4	doubleclick.net securepubads.g.doubleclick.net — Cisco Umbrella Rank: 193 stats.g.doubleclick.net — Cisco Umbrella Rank: 95	154 KB
3	googletagmanager.com www.googletagmanager.com — Cisco Umbrella Rank: 71	160 KB
2	fastly.net confiant-integrations.global.ssl.fastly.net — Cisco Umbrella Rank: 1576	95 KB
2	facebook.com www.facebook.com — Cisco Umbrella Rank: 100	429 B
2	blueconic.net encyclopediabritannica.blueconic.net — Cisco Umbrella Rank: 27091	2 KB
2	facebook.net connect.facebook.net — Cisco Umbrella Rank: 138	114 KB
2	surveymonkey.com widget.surveymonkey.com — Cisco Umbrella Rank: 19534	18 KB
2	googleapis.com fonts.googleapis.com — Cisco Umbrella Rank: 46 ajax.googleapis.com — Cisco Umbrella Rank: 282	84 KB
1	google.de www.google.de — Cisco Umbrella Rank: 5383	501 B
1	google.com www.google.com — Cisco Umbrella Rank: 4	501 B
1	id5-sync.com cdn.id5-sync.com — Cisco Umbrella Rank: 1681	11 KB
1	jwplayer.com cdn.jwplayer.com — Cisco Umbrella Rank: 2361	5 KB
1	t.co t.co — Cisco Umbrella Rank: 476	337 B
1	twitter.com analytics.twitter.com — Cisco Umbrella Rank: 524	458 B
1	trackonomics.net cdn-magiclinks.trackonomics.net — Cisco Umbrella Rank: 6030	20 KB
1	ads-twitter.com static.ads-twitter.com — Cisco Umbrella Rank: 619	6 KB
1	eb.com webstats.eb.com — Cisco Umbrella Rank: 21591	303 B
1	windows.net insitez.blob.core.windows.net — Cisco Umbrella Rank: 19725	489 B
1	gstatic.com fonts.gstatic.com	122 KB
1	cloudflareinsights.com static.cloudflareinsights.com — Cisco Umbrella Rank: 1199	5 KB
1	jwplatform.com content.jwplatform.com — Cisco Umbrella Rank: 3264	43 KB
1	googleoptimize.com www.googleoptimize.com — Cisco Umbrella Rank: 1430	54 KB
117	28

	Domain	Requested by
20	cmp-consent-tool.privacymanager.io	gdpr.privacymanager.io cmp-consent-tool.privacymanager.io
17	bc-script.britannica.com	www.googletagmanager.com bc-script.britannica.com
15	cdn.britannica.com	www.britannica.com cdn.britannica.com
8	c.amazon-adsystem.com	ads.adthrive.com c.amazon-adsystem.com
5	www.google-analytics.com	www.googletagmanager.com www.google-analytics.com
5	dev.visualwebsiteoptimizer.com	www.britannica.com dev.visualwebsiteoptimizer.com
5	ads.adthrive.com	www.britannica.com ads.adthrive.com
4	www.britannica.com	cdn.britannica.com static.cloudflareinsights.com
3	securepubads.g.doubleclick.net	ads.adthrive.com securepubads.g.doubleclick.net
3	gdpr-wrapper.privacymanager.io	ads.adthrive.com gdpr.privacymanager.io
3	www.googletagmanager.com	www.britannica.com www.googletagmanager.com
2	confiant-integrations.global.ssl.fastly.net	ads.adthrive.com confiant-integrations.global.ssl.fastly.net
2	www.facebook.com	www.britannica.com
2	gdpr.privacymanager.io	gdpr-wrapper.privacymanager.io cmp-consent-tool.privacymanager.io
2	encyclopediabritannica.blueconic.net	bc-script.britannica.com
2	connect.facebook.net	www.britannica.com connect.facebook.net
2	widget.surveymonkey.com	www.britannica.com widget.surveymonkey.com
1	www.google.de	www.britannica.com
1	www.google.com	www.britannica.com
1	stats.g.doubleclick.net	www.google-analytics.com
1	cdn.id5-sync.com	www.britannica.com
1	cdn.jwplayer.com	ads.adthrive.com
1	t.co	www.britannica.com
1	analytics.twitter.com	static.ads-twitter.com
1	ajax.googleapis.com	widget.surveymonkey.com
1	cdn-magiclinks.trackonomics.net	www.britannica.com
1	static.ads-twitter.com	www.britannica.com
1	webstats.eb.com	www.britannica.com
1	insitez.blob.core.windows.net	www.britannica.com
1	fonts.gstatic.com	fonts.googleapis.com
1	static.cloudflareinsights.com	www.britannica.com
1	content.jwplatform.com	www.britannica.com
1	www.googleoptimize.com	www.britannica.com
1	fonts.googleapis.com	www.britannica.com
117	34

This site contains links to these domains. Also see Links.

Domain
subscription.britannica.com
cdn.britannica.com
www.merriam-webster.com
corporate.britannica.com
www.facebook.com
twitter.com
imagine.gsfc.nasa.gov

Subject Issuer	Validity	Valid
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2022-03-13` - `2023-03-13`	a year	crt.sh
upload.video.google.com GTS CA 1C3	`2022-03-28` - `2022-06-20`	3 months	crt.sh
cdn.britannica.com Amazon	`2021-10-13` - `2022-11-10`	a year	crt.sh
*.google-analytics.com GTS CA 1C3	`2022-03-28` - `2022-06-20`	3 months	crt.sh
jwplayer.com Amazon	`2021-12-29` - `2023-01-25`	a year	crt.sh
*.adthrive.com Amazon	`2021-07-05` - `2022-08-03`	a year	crt.sh
*.visualwebsiteoptimizer.com Starfield Secure Certificate Authority - G2	`2020-06-19` - `2022-07-06`	2 years	crt.sh
*.gstatic.com GTS CA 1C3	`2022-03-28` - `2022-06-20`	3 months	crt.sh
*.blob.core.windows.net Microsoft RSA TLS CA 02	`2022-03-16` - `2023-03-16`	a year	crt.sh
surveymonkey.com Amazon	`2021-04-22` - `2022-05-21`	a year	crt.sh
*.eb.com Amazon	`2021-11-09` - `2022-12-07`	a year	crt.sh
ads-twitter.com DigiCert TLS RSA SHA256 2020 CA1	`2021-07-21` - `2022-07-26`	a year	crt.sh
*.facebook.com DigiCert SHA2 High Assurance Server CA	`2022-01-22` - `2022-04-22`	3 months	crt.sh
bc-script.britannica.com Amazon	`2021-06-11` - `2022-07-10`	a year	crt.sh
*.trackonomics.net Go Daddy Secure Certificate Authority - G2	`2021-12-22` - `2023-01-23`	a year	crt.sh
*.privacymanager.io Amazon	`2021-09-25` - `2022-10-24`	a year	crt.sh
c.amazon-adsystem.com Amazon	`2021-07-06` - `2022-06-27`	a year	crt.sh
*.g.doubleclick.net GTS CA 1C3	`2022-03-21` - `2022-06-13`	3 months	crt.sh
*.blueconic.net Amazon	`2021-08-07` - `2022-09-05`	a year	crt.sh
*.twitter.com DigiCert TLS Hybrid ECC SHA384 2020 CA1	`2022-03-07` - `2023-03-06`	a year	crt.sh
t.co DigiCert TLS Hybrid ECC SHA384 2020 CA1	`2022-03-07` - `2023-03-06`	a year	crt.sh
*.freetls.fastly.net GlobalSign Atlas R3 DV TLS CA 2020	`2021-04-27` - `2022-05-29`	a year	crt.sh
cdn.id5-sync.com R3	`2022-04-13` - `2022-07-12`	3 months	crt.sh
www.google.com GTS CA 1C3	`2022-03-28` - `2022-06-20`	3 months	crt.sh
www.google.de GTS CA 1C3	`2022-03-28` - `2022-06-20`	3 months	crt.sh

This page contains 4 frames:

Primary Page: https://www.britannica.com/science/electromagnetic-spectrum
Frame ID: 89BDE77285293EEB25A8AF78FFBA4FED
Requests: 92 HTTP requests in this frame

Frame: https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.js
Frame ID: 07093CF4ACA141AC47728D787057ADA0
Requests: 2 HTTP requests in this frame

Frame: https://cmp-consent-tool.privacymanager.io/latest/index.html
Frame ID: 3C73E639230ACB821B8EF770CA9C0674
Requests: 21 HTTP requests in this frame

Frame: https://www.facebook.com/tr/
Frame ID: 36B8F6468E62575B9D90036B58CBC43E
Requests: 1 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

electromagnetic spectrum | Definition, Diagram, & Uses | Britannica

Detected technologies

Cloudflare Browser Insights (Analytics) Expand

Overall confidence: 100%
Detected patterns

static\.cloudflareinsights\.com/beacon(?:\.min)?\.js

Facebook (Widgets) Expand

Overall confidence: 100%
Detected patterns

//connect\.facebook\.([a-z]+)/[^/]*/[a-z]*\.js

Google Analytics (Analytics) Expand

Overall confidence: 100%
Detected patterns

google-analytics\.com/(?:ga|urchin|analytics)\.js

Google Font API (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

<link[^>]* href=[^>]+fonts\.(?:googleapis|google)\.com

Google Optimize (A/B Testing) Expand

Overall confidence: 100%
Detected patterns

googleoptimize\.com/optimize\.js

Google Tag Manager (Tag Managers) Expand

Overall confidence: 100%
Detected patterns

googletagmanager\.com/gtm\.js
googletagmanager\.com/gtag/js

VWO (Analytics) Expand

Overall confidence: 100%
Detected patterns

dev\.visualwebsiteoptimizer\.com/?([\d.]+)

jQuery (JavaScript Libraries) Expand

Overall confidence: 100%
Detected patterns

jquery[.-]([\d.]*\d)[^/]*\.js
/([\d.]+)/jquery(?:\.min)?\.js
jquery.*\.js(?:\?ver(?:sion)?=([\d.]+))?

Page Statistics

117
Requests

100 %
HTTPS

50 %
IPv6

28
Domains

34
Subdomains

34
IPs

6
Countries

2787 kB
Transfer

8825 kB
Size

29
Cookies

9 Outgoing links

These are links going to different origins than the main page.

URL: https://subscription.britannica.com/subscribe?partnerCode=BP_GN_NAC_EUR
Title: Subscribe

Search URL Search Domain Scan URL

URL: https://cdn.britannica.com/76/276-050-7BFF196F/position-light-electromagnetic-spectrum-range-right.jpg

Search URL Search Domain Scan URL

URL: https://www.merriam-webster.com/dictionary/comprises
Title: comprises

Search URL Search Domain Scan URL

URL: https://www.merriam-webster.com/dictionary/contiguous
Title: contiguous

Search URL Search Domain Scan URL

URL: https://cdn.britannica.com/75/95275-050-5FC96002/Radio-waves-rays-light-gamma-ultraviolet-electromagnetic.jpg

Search URL Search Domain Scan URL

URL: http://corporate.britannica.com/publishing-partner-program/
Title: Join Britannica's Publishing Partner Program and our community of experts to gain a global audience for your work!

Search URL Search Domain Scan URL

URL: https://www.facebook.com/BRITANNICA/
Title: Facebook

Search URL Search Domain Scan URL

URL: https://twitter.com/britannica
Title: Twitter

Search URL Search Domain Scan URL

URL: https://imagine.gsfc.nasa.gov/science/toolbox/emspectrum1.html
Title: NASA - The Electromagnetic Spectrum

Search URL Search Domain Scan URL

Redirected requests

There were HTTP redirect chains for the following requests:

117 HTTP transactions
0 data transactions

Method
Protocol Status Resource
Path Size
x-fer Time
Latency Type
MIME-Type IP
Location

GET
H2 200 Primary Request electromagnetic-spectrum Show response
www.britannica.com/science/ 75 KB
21 KB 241ms
204ms Document
text/html 104.18.4.110
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://www.britannica.com/science/electromagnetic-spectrum

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

104.18.4.110 -, , ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

e69ca58081611d6b571a8298a1e28a3149d8b3f89a2c9c65bc1fdc09b825a5ca

Security Headers

Name	Value
X-Xss-Protection	1; mode=block

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400
cf-cache-status: DYNAMIC
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GET
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c.amazon-adsystem.com/e/dtb/ 64 B
534 B 38ms
38ms XHR
text/javascript 108.156.255.177
AMAZON-02

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Show headers Download Go to

Full URL

https://c.amazon-adsystem.com/e/dtb/bid?src=600&u=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum&pid=ikTsis6QGRzBt&cb=2&ws=1600x1200&v=7.75.0&t=1800&slots=%5B%7B%22sd%22%3A%22AdThrive_Footer_1_desktop%22%2C%22s%22%3A%5B%22728x90%22%2C%22320x50%22%2C%22970x90%22%2C%22300x50%22%2C%22320x100%22%2C%22468x60%22%2C%221x1%22%5D%2C%22sn%22%3A%22%2F18190176%2FAdThrive_Footer_1%2F61575e5c934c481d714b3ca9%22%7D%5D&schain=1.0%2C1!cafemedia.com%2C61575e5c934c481d714b3ca9%2C1%2C%2C%2C&pubid=4fbba76f-7987-4fa2-9733-c27eb3a2170b&gdpre=1&gdprl=%7B%22status%22%3A%22tcfv2-success%22%7D

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Protocol

Security

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Server

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Reverse DNS

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Software

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Response headers

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AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL: https://cmp-consent-tool.privacymanager.io/latest/index.html
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text/plain 2a00:1450:400c:c07::9d
GOOGLE

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Full URL

https://stats.g.doubleclick.net/j/collect?t=dc&aip=1&_r=3&v=1&_v=j96&tid=UA-6636134-11&cid=1806353152.1649977041&jid=632908897&gjid=1448001055&_gid=1857256244.1649977041&_u=aCDAAUIgAAAAAC~&z=796219577

Requested by

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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

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Response headers

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server: Golfe2
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GET
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cdn.britannica.com/76/219376-131-8501C217/ 250 KB
251 KB 13ms
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image/jpeg 108.157.4.109
AMAZON-02

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Show headers Download Go to Show image

Full URL: https://cdn.britannica.com/76/219376-131-8501C217/artists-brushes-paints.jpg
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Request headers

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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

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GET
H2 200 bid Show response
c.amazon-adsystem.com/e/dtb/ 23 B
494 B 39ms
38ms XHR
text/javascript 108.156.255.177
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

https://c.amazon-adsystem.com/e/dtb/bid?src=600&u=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum&pid=ikTsis6QGRzBt&cb=3&ws=1600x1200&v=7.75.0&t=1800&slots=%5B%7B%22sd%22%3A%22AdThrive_Infinite_1%22%2C%22s%22%3A%5B%22300x250%22%5D%2C%22sn%22%3A%22%2F18190176%2FAdThrive_Sidebar_1%2F61575e5c934c481d714b3ca9%22%7D%5D&cfgv=1&schain=1.0%2C1!cafemedia.com%2C61575e5c934c481d714b3ca9%2C1%2C%2C%2C&pubid=4fbba76f-7987-4fa2-9733-c27eb3a2170b&gdpre=1&gdprl=%7B%22status%22%3A%22tcfv2-success%22%7D

Requested by

Host: c.amazon-adsystem.com
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Protocol

Security

TLS 1.3, , AES_128_GCM

Server

108.156.255.177 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

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Software

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Resource Hash

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Security Headers

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Request headers

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Response headers

date: Thu, 14 Apr 2022 22:57:21 GMT
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GET
H2 200 bid Show response
c.amazon-adsystem.com/e/dtb/ 23 B
493 B 41ms
41ms XHR
text/javascript 108.156.255.177
AMAZON-02

General

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Show headers Download Go to

Full URL

https://c.amazon-adsystem.com/e/dtb/bid?src=600&u=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum&pid=ikTsis6QGRzBt&cb=4&ws=1600x1200&v=7.75.0&t=1800&slots=%5B%7B%22sd%22%3A%22AdThrive_Infinite_2%22%2C%22s%22%3A%5B%22300x250%22%2C%22320x50%22%2C%22300x50%22%2C%22320x100%22%2C%22250x250%22%2C%22120x240%22%2C%22300x300%22%2C%22320x300%22%5D%2C%22sn%22%3A%22%2F18190176%2FAdThrive_Sidebar_9%2F61575e5c934c481d714b3ca9%22%7D%5D&cfgv=1&schain=1.0%2C1!cafemedia.com%2C61575e5c934c481d714b3ca9%2C1%2C%2C%2C&pubid=4fbba76f-7987-4fa2-9733-c27eb3a2170b&gdpre=1&gdprl=%7B%22status%22%3A%22tcfv2-success%22%7D

Requested by

Host: c.amazon-adsystem.com
URL: https://c.amazon-adsystem.com/aax2/apstag.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

108.156.255.177 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

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Software

Server /

Resource Hash

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Security Headers

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Request headers

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Response headers

date: Thu, 14 Apr 2022 22:57:21 GMT
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GET
H2 200 ga-audiences
www.google.com/ads/ 42 B
501 B 44ms
18ms Image
image/gif 2a00:1450:4001:830::2004
GOOGLE

General

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Show headers Download Go to Show image

Full URL

https://www.google.com/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j96&tid=UA-6636134-11&cid=1806353152.1649977041&jid=632908897&_u=aCDAAUIgAAAAAC~&z=1733757500

Requested by

Host: www.britannica.com
URL: https://www.britannica.com/science/electromagnetic-spectrum

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:830::2004 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

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Security Headers

Name	Value
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Request headers

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Response headers

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x-content-type-options: nosniff
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GET
H2 200 ga-audiences
www.google.de/ads/ 42 B
501 B 43ms
18ms Image
image/gif 2a00:1450:4001:82f::2003
GOOGLE

General

Check archive.org

Show headers Download Go to Show image

Full URL

https://www.google.de/ads/ga-audiences?t=sr&aip=1&_r=4&slf_rd=1&v=1&_v=j96&tid=UA-6636134-11&cid=1806353152.1649977041&jid=632908897&_u=aCDAAUIgAAAAAC~&z=1733757500

Requested by

Host: www.britannica.com
URL: https://www.britannica.com/science/electromagnetic-spectrum

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:82f::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

cafe /

Resource Hash

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Security Headers

Name	Value
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Request headers

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Response headers

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x-content-type-options: nosniff
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content-length: 42
x-xss-protection: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

GET
H3 200 settings.js Show response
dev.visualwebsiteoptimizer.com/ 344 B
269 B 9ms
8ms Script
application/javascript 34.96.102.137
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://dev.visualwebsiteoptimizer.com/settings.js?a=331471&settings_type=2&vn=7.0&r=0.5653160826774204&u=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum
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Protocol: H3
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Request headers

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Response headers

date: Thu, 14 Apr 2022 22:57:21 GMT
via: 1.1 google
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content-type: application/javascript; charset=UTF-8

GET
H2 200 styles.css
cmp-consent-tool.privacymanager.io/latest/ Frame 3C73 90 KB
10 KB 10ms
9ms Stylesheet
text/css 108.157.4.34
AMAZON-02

General

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Show headers Download Go to

Full URL: https://cmp-consent-tool.privacymanager.io/latest/styles.css
Requested by: Host: cmp-consent-tool.privacymanager.io
URL: https://cmp-consent-tool.privacymanager.io/latest/index.html
Protocol: H2
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Server: 108.157.4.34 , United States, ASN16509 (AMAZON-02, US),
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Software: AmazonS3 /
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Request headers

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Response headers

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expires: Thu, 01 Jan 1970 00:00:00 GMT

GET
H2 200 cs Show response
encyclopediabritannica.blueconic.net/DG/DEFAULT/ 66 B
860 B 97ms
97ms Script
text/javascript 54.173.84.57
AMAZON-AES

General

Check archive.org

Show headers Download Go to

Full URL

https://encyclopediabritannica.blueconic.net/DG/DEFAULT/cs?bcsessionid=416caa64-b612-413d-85f1-87e3031a68fe&&callback=bc_json672

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.2, ECDHE_RSA, AES_128_GCM

Server

54.173.84.57 Ashburn, United States, ASN14618 (AMAZON-AES, US),

Reverse DNS

ec2-54-173-84-57.compute-1.amazonaws.com

Software

- /

Resource Hash

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Security Headers

Name	Value
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Request headers

accept-language: de-DE,de;q=0.9
Referer: https://www.britannica.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

pragma: no-cache
date: Thu, 14 Apr 2022 22:57:22 GMT
content-encoding: gzip
x-content-type-options: nosniff
server: -
x-robots-tag: noindex, nofollow
p3p: policyref="", CP="DSP"
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cache-control: no-cache, no-store, no-transform, must-revalidate, private
content-type: text/javascript; charset=utf-8
content-length: 86
x-xss-protection: 1; mode=block
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 9 KB
3 KB 421ms
419ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

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Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 2130
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: VGaF5WAvsCMiQLH0goVak90aM-LowDgWn91G28kGJB8IDeooKXIBNQ==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 9 KB
3 KB 427ms
425ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

95036e3f899ad026ab9d743e8532551ade31b3b3bddc6a45bb79321fc2d11c12

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 2096
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: 8b47EYkiVHLRy7jq4LLj15GpQThSymXzvCUF5MQhphzAIIeCq4HOFQ==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 188 B
1 KB 416ms
415ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

0db0585762b7805c8c44d7c1b5241dd7e6dbac9117182e886c79d4233c1a7aa9

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 167
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: Th15IIk3NPfJ0lEHPiGeYM2HqmzgBJEdOCRYbFGPGgUtaU_8BZj1iw==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 188 B
1 KB 100ms
100ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

8a63d35f054c635e364edaecf79cf5daf2f86e40e4967ef25fc88b500d7068b5

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 167
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: kFN02uR9zXYMZ1HComlf5pNzn7mPpnehXNf5uA8XDhBwJ260_jbVkg==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 375 B
1 KB 100ms
100ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

ef7cb5c3bbc55b08e09c5fb7b670de2bd95d2c36752dfb0cb1400dea59c2f586

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 177
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: lTg-jGtaa8Iy7OS7bajkxxQvmLbFyJHtusoglJFLzTrGU2Pmzk8Elw==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H2 200 670 Show response
bc-script.britannica.com/DG/DEFAULT/rest/rpc/ 188 B
1 KB 99ms
99ms XHR
application/json 143.204.98.28
AMAZON-02

General

Check archive.org

Show headers Download Go to

Full URL

Requested by

Host: bc-script.britannica.com
URL: https://bc-script.britannica.com/script.js

Protocol

Security

TLS 1.3, , AES_128_GCM

Server

143.204.98.28 , United States, ASN16509 (AMAZON-02, US),

Reverse DNS

server-143-204-98-28.fra50.r.cloudfront.net

Software

- /

Resource Hash

501290869ddb9759add08228f90d31a8df2c354fdc9d1547a24e782cc9894d3b

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	1; mode=block

Request headers

Referer: https://www.britannica.com/
accept-language: de-DE,de;q=0.9
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36
Content-Type: text/plain

Response headers

date: Thu, 14 Apr 2022 22:57:23 GMT
content-encoding: gzip
x-content-type-options: nosniff
x-permitted-cross-domain-policies: master-only
x-amz-cf-pop: FRA50-C1
x-cache: Miss from cloudfront
p3p: policyref="", CP="DSP"
content-length: 168
x-xss-protection: 1; mode=block
pragma: no-cache
access-control-allow-origin: https://www.britannica.com
server: -
content-type: application/json; charset=utf-8
via: 1.1 1b73451818d2dd47a574604c0b84f692.cloudfront.net (CloudFront)
cache-control: no-cache, no-store, no-transform, must-revalidate, private
access-control-allow-credentials: true
x-robots-tag: noindex, nofollow
x-amz-cf-id: PFMP3jl9BWlJhDXGbVB4KDVMnAiYiwRHtRFBg8erK1YagjjiG3VMuQ==
expires: Thu, 01 Jan 1970 00:00:00 GMT

POST
H3 204 collect
www.google-analytics.com/g/ 0
17 B 14ms
14ms Ping
text/plain 2a00:1450:4001:831::200e
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL: https://www.google-analytics.com/g/collect?v=2&tid=G-TE6YF92Y0D&gtm=2oe4d0&_p=739680610&sr=1600x1200&_z=ccd.ILB&ul=en-us&cid=1806353152.1649977041&_s=2&dl=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum&dt=electromagnetic%20spectrum%20%7C%20Definition%2C%20Diagram%2C%20%26%20Uses%20%7C%20Britannica&sid=1649977040&sct=1&seg=1&en=page_view&_et=4&ep.page_type=Topic
Requested by: Host: www.googletagmanager.com
URL: https://www.googletagmanager.com/gtag/js?id=G-TE6YF92Y0D&l=dataLayer&cx=c
Protocol: H3
Security: QUIC, , AES_128_GCM
Server: 2a00:1450:4001:831::200e Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),
Reverse DNS
Software: Golfe2 /
Resource Hash: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://www.britannica.com/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/100.0.4896.75 Safari/537.36

Response headers

pragma: no-cache
date: Thu, 14 Apr 2022 22:57:26 GMT
server: Golfe2
content-type: text/plain
access-control-allow-origin: https://www.britannica.com
cache-control: no-cache, no-store, must-revalidate
access-control-allow-credentials: true
cross-origin-resource-policy: cross-origin
alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000,h3-Q050=":443"; ma=2592000,h3-Q046=":443"; ma=2592000,h3-Q043=":443"; ma=2592000,quic=":443"; ma=2592000; v="46,43"
content-length: 0
expires: Fri, 01 Jan 1990 00:00:00 GMT

Verdicts & Comments Add Verdict or Comment

149 JavaScript Global Variables

These are the non-standard "global" variables defined on the window object. These can be helpful in identifying possible client-side frameworks and code.

29 Cookies

Cookies are little pieces of information stored in the browser of a user. Whenever a user visits the site again, he will also send his cookie values, thus allowing the website to re-identify him even if he changed locations. This is how permanent logins work.

Domain/Path	Expires	Name / Value
bc-script.britannica.com/DG/DEFAULT	1970-01-20 11:55:37	Name: BCSessionID Value: 416caa64-b612-413d-85f1-87e3031a68fe
encyclopediabritannica.blueconic.net/DG/DEFAULT	1970-01-20 11:05:13	Name: BCSessionID Value: 416caa64-b612-413d-85f1-87e3031a68fe
www.britannica.com/science	1970-01-20 02:19:37	Name: sessionId Value: 6061EB7A-65E4-4F4E-B923-EFD3E9CE2733
.britannica.com/	1970-01-23 17:55:37	Name: bcomID Value: 8464836287106672398
.britannica.com/	1969-12-31 23:59:59	Name: SessionAuth Value: mIm8UfJ6R9b+FrRiZIH7plYjjXS9sPhJGs4tbg8s5RtlBX9AQHqP36+FcuiyT6ee
.britannica.com/	1969-12-31 23:59:59	Name: subreturn Value: https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum
.britannica.com/	1969-12-31 23:59:59	Name: webstats Value: "referer_page=https%3A%2F%2Fwww.britannica.com%2Fscience%2Felectromagnetic-spectrum"
.britannica.com/	1969-12-31 23:59:59	Name: __mendel Value: %7B%27pagesViewed%27%3A1%2C%27surveyShown%27%3Atrue%2C%27topicInitialSequence%27%3A1%7D
.britannica.com/	1970-01-20 11:06:39	Name: _vwo_uuid_v2 Value: D414925FB4452AC96CEF51FEDFAD6C6A3\|9f5e3501e95213a4e60a04220e40180c
.britannica.com/	1970-01-20 11:05:13	Name: CAMLoginRedirectUrl Value: https://www.britannica.com/science/electromagnetic-spectrum
.britannica.com/	1970-01-20 04:43:37	Name: _vis_opt_s Value: 1%7C
.britannica.com/	1969-12-31 23:59:59	Name: _vis_opt_test_cookie Value: 1
www.britannica.com/	1970-01-20 11:05:13	Name: last_visit_bc Value: 1649977041168
.britannica.com/	1970-01-20 19:50:49	Name: _ga_TE6YF92Y0D Value: GS1.1.1649977040.1.1.1649977040.0
.britannica.com/	1970-01-20 04:29:13	Name: _fbp Value: fb.1.1649977041270.45170164
.facebook.com/	1970-01-20 04:29:13	Name: fr Value: 0vvM4TrKBWERWY0m1..BiWKbR...1.0.BiWKbR.
.twitter.com/	1970-01-20 19:50:49	Name: personalization_id Value: "v1_KtZ7Ojq0a8T+H0b00P9OcA=="
.t.co/	1970-01-20 19:50:49	Name: muc_ads Value: 4184bb18-b93e-4b64-93e8-d8598d5c6665
.britannica.com/	1970-01-20 19:50:49	Name: _ga Value: GA1.2.1806353152.1649977041
.britannica.com/	1970-01-20 02:21:03	Name: _gid Value: GA1.2.1857256244.1649977041
.britannica.com/	1970-01-20 11:41:13	Name: gdpr-auditId Value: beec846a04c740acb31055d46cb04b03
.britannica.com/	1970-01-20 02:19:37	Name: _gat_gtag_UA_6636134_11 Value: 1
www.britannica.com/	1969-12-31 23:59:59	Name: JSESSIONID Value: 4F0A921A25219AAE85B94EA0971AA142
www.britannica.com/	1969-12-31 23:59:59	Name: BCSessionID Value: 416caa64-b612-413d-85f1-87e3031a68fe
encyclopediabritannica.blueconic.net/	1970-01-20 02:29:41	Name: AWSALBCORS Value: lAtE4xYwnC2Wv4uVjbFgTN0SKY98D23uxs/Wnp2iUEpMykyZt607XUHusJ6sGgv+azPuZzzMrD4h/2MxiSmjEKtn2+WLRgtu6eICgzU3P9YTZyVS5NmyEHwhQz/z
.britannica.com/	1970-01-20 11:05:13	Name: eb_content_meter_views_remaining Value: 5
.britannica.com/	1970-01-20 11:05:13	Name: eb_content_meter Value: true
bc-script.britannica.com/	1970-01-20 02:29:41	Name: AWSALB Value: Gh0mGNB+TE4PlAs9tb6g4nBKlN8IO1S60mkRmbzGyNfmmVu409wrcCK6rOzxbuS2toKBgLDp5EFNivDRJVJ4o1VJvioZ42dJ8ug5/GVte6t6jneGVwjhbKrdt1YV
bc-script.britannica.com/	1970-01-20 02:29:41	Name: AWSALBCORS Value: Gh0mGNB+TE4PlAs9tb6g4nBKlN8IO1S60mkRmbzGyNfmmVu409wrcCK6rOzxbuS2toKBgLDp5EFNivDRJVJ4o1VJvioZ42dJ8ug5/GVte6t6jneGVwjhbKrdt1YV

8 Console Messages

A page may trigger messages to the console to be logged. These are often error messages about being unable to load a resource or execute a piece of JavaScript. Sometimes they also provide insight into the technology behind a website.

Source	Level	URL Text
other	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/index.html#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: A preload for 'https://cmp-consent-tool.privacymanager.io/latest/runtime.js' is found, but is not used because the request credentials mode does not match. Consider taking a look at crossorigin attribute.
other	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/index.html#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: A preload for 'https://cmp-consent-tool.privacymanager.io/latest/polyfills.js' is found, but is not used because the request credentials mode does not match. Consider taking a look at crossorigin attribute.
other	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/index.html#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: A preload for 'https://cmp-consent-tool.privacymanager.io/latest/vendor.js' is found, but is not used because the request credentials mode does not match. Consider taking a look at crossorigin attribute.
other	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/index.html#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: A preload for 'https://cmp-consent-tool.privacymanager.io/latest/main.js' is found, but is not used because the request credentials mode does not match. Consider taking a look at crossorigin attribute.
javascript	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: The resource https://cmp-consent-tool.privacymanager.io/latest/runtime.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
javascript	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: The resource https://cmp-consent-tool.privacymanager.io/latest/main.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
javascript	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: The resource https://cmp-consent-tool.privacymanager.io/latest/vendor.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.
javascript	warning	URL: https://cmp-consent-tool.privacymanager.io/latest/#/notice?theme=blueLagoon&useSystemFonts=false&cmpType=tcf Message: The resource https://cmp-consent-tool.privacymanager.io/latest/polyfills.js was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it has an appropriate `as` value and it is preloaded intentionally.

Security Headers

This page lists any security headers set by the main page. If you want to understand what these mean and how to use them, head on over to this page

Header	Value
X-Xss-Protection	1; mode=block

Indicators

This is a term in the security industry to describe indicators such as IPs, Domains, Hashes, etc. This does not imply that any of these indicate malicious activity.

ads.adthrive.com
ajax.googleapis.com
analytics.twitter.com
bc-script.britannica.com
c.amazon-adsystem.com
cdn-magiclinks.trackonomics.net
cdn.britannica.com
cdn.id5-sync.com
cdn.jwplayer.com
cmp-consent-tool.privacymanager.io
confiant-integrations.global.ssl.fastly.net
connect.facebook.net
content.jwplatform.com
dev.visualwebsiteoptimizer.com
encyclopediabritannica.blueconic.net
fonts.googleapis.com
fonts.gstatic.com
gdpr-wrapper.privacymanager.io
gdpr.privacymanager.io
insitez.blob.core.windows.net
securepubads.g.doubleclick.net
static.ads-twitter.com
static.cloudflareinsights.com
stats.g.doubleclick.net
t.co
webstats.eb.com
widget.surveymonkey.com
www.britannica.com
www.facebook.com
www.google-analytics.com
www.google.com
www.google.de
www.googleoptimize.com
www.googletagmanager.com
104.18.4.110
104.244.42.131
104.244.42.5
108.156.255.177
108.157.4.109
108.157.4.34
142.250.186.162
143.204.98.126
143.204.98.28
151.101.129.194
18.66.248.71
199.232.136.157
23.20.129.87
2600:9000:2156:7600:1:a3fa:7cc0:93a1
2600:9000:2156:b200:1:a3fa:7cc0:93a1
2600:9000:2156:ce00:11:2a6a:9480:93a1
2600:9000:224a:b400:16:f82a:8600:93a1
2600:9000:236e:c800:1d:8c8c:47c0:93a1
2606:4700:440e::6812:2fe6
2a00:1450:4001:810::200a
2a00:1450:4001:811::2003
2a00:1450:4001:829::200e
2a00:1450:4001:82a::2008
2a00:1450:4001:82f::2003
2a00:1450:4001:82f::200a
2a00:1450:4001:830::2004
2a00:1450:4001:831::200e
2a00:1450:400c:c07::9d
2a03:2880:f02d:12:face:b00c:0:3
2a03:2880:f12d:83:face:b00c:0:25de
34.96.102.137
40.118.73.208
46.105.202.126
54.173.84.57
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www.britannica.com Open in urlscan Pro 104.18.4.110 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

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Detected technologies

Page Statistics

117 Requests

100 %HTTPS

50 %IPv6

28 Domains

34 Subdomains

34 IPs

6 Countries

2787 kBTransfer

8825 kBSize

29 Cookies

9 Outgoing links

Redirected requests

117 HTTP transactions Everything HTML Script AJAX CSS Image Expand all 0 data transactions

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www.britannica.com Open in urlscan Pro
104.18.4.110 Public Scan

Screenshot
Live screenshot

Full Image

117
Requests

100 %
HTTPS

50 %
IPv6

28
Domains

34
Subdomains

34
IPs

6
Countries

2787 kB
Transfer

8825 kB
Size

29
Cookies

117 HTTP transactions
0 data transactions