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support.mozilla.org
151.101.193.91  Public Scan Open in urlscan Pro

Go To Rescan Add Verdict Report
Submitted URL: http://detectportal.firefox.com/canonical.html 9yr old
Effective URL: https://support.mozilla.org/kb/captive-portal 13yr old
Submission: On February 13 via manual from SG — Scanned from SG
 Behaviour Indicators
Similar DOM Content API
Verdicts

Summary

This website contacted 3 IPs in 1 countries across 2 domains to perform 3 HTTP transactions. The main IP is 151.101.193.91, located in United States and belongs to FASTLY - Fastly, Inc., US. The main domain is support.mozilla.org. The Cisco Umbrella rank of the primary domain is 8623. 13yr old
TLS certificate: Issued by R13 on February 3rd 2026. Valid for: 3mo.
This is the only time support.mozilla.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

IP Address AS Autonomous System
2 34.107.221.82 396982 (GOOGLE-CL...)
1 151.101.193.91 54113 (FASTLY)
3 3
Apex Domain
Subdomains		 Transfer
2 firefox.com
detectportal.firefox.com — Cisco Umbrella Rank: 2754 9yr old
422 B
1 mozilla.org
support.mozilla.org — Cisco Umbrella Rank: 8623 13yr old
179 KB
3 2
Domain Requested by
2 detectportal.firefox.com
1 support.mozilla.org
3 2

This site contains no links.

Subject Issuer Validity Valid
detectportal.firefox.com
R13		 2025-12-18 -
2026-03-18		 3mo crt.sh
support.mozilla.org
R13		 2026-02-03 -
2026-05-04		 3mo crt.sh

This page contains 1 frames:

Primary Page: https://support.mozilla.org/kb/captive-portal
Frame ID: 19432E9C5EF27BE47A96F90BAAA67B20
Requests: 6 HTTP requests in this frame

Screenshot
Live screenshot
Full Image

Page Title

support.mozilla.org

Page URL History Show full URLs

  1. http://detectportal.firefox.com/canonical.html HTTP 307
    https://detectportal.firefox.com/canonical.html Page URL
  2. https://support.mozilla.org/kb/captive-portal Page URL

Page Statistics

3
Requests

100 %
HTTPS

0 %
IPv6

2
Domains

2
Subdomains

3
IPs

1
Countries

180 kB
Transfer

187 kB
Size

0
Cookies

Page URL History

This captures the URL locations of the websites, including HTTP redirects and client-side redirects via JavaScript or Meta fields.

  1. http://detectportal.firefox.com/canonical.html HTTP 307
    https://detectportal.firefox.com/canonical.html Page URL
  2. https://support.mozilla.org/kb/captive-portal Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

Request Chain 0
  • http://detectportal.firefox.com/canonical.html HTTP 307
  • https://detectportal.firefox.com/canonical.html

3 HTTP transactions

Resource
Path		 Size
x-fer		 Type
MIME-Type
canonical.html
detectportal.firefox.com/
Redirect Chain
  • http://detectportal.firefox.com/canonical.html
  • https://detectportal.firefox.com/canonical.html
90 B
219 B 		Document
General
Check archive.org
Download Go to
Full URL
https://detectportal.firefox.com/canonical.html
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.107.221.82 Kansas City, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US),
Reverse DNS
82.221.107.34.bc.googleusercontent.com
Software
nginx /
Resource Hash

Request headers

Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36

Response headers

age
69753
alt-svc
clear
cache-control
public,must-revalidate,max-age=0,s-maxage=3600
content-length
90
content-type
text/html
date
Thu, 12 Feb 2026 11:40:06 GMT
server
nginx
via
1.1 google

Redirect headers

Location
https://detectportal.firefox.com/canonical.html
Non-Authoritative-Reason
HttpsUpgrades
Primary Request captive-portal
support.mozilla.org/kb/ 		179 KB
179 KB 		Document
General
Check archive.org
Download Go to
Full URL
https://support.mozilla.org/kb/captive-portal
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
151.101.193.91 , United States, ASN54113 (FASTLY - Fastly, Inc., US),
Reverse DNS
Software
/
Resource Hash
8ef6c91d062c40324f17d680d17ad1168f8029a93176d4c6b30c4ec3f0f4adae

Request headers

Referer
https://detectportal.firefox.com/
Upgrade-Insecure-Requests
1
User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36

Response headers

accept-ranges
bytes
cache-control
private, no-store
date
Fri, 13 Feb 2026 07:02:39 GMT
retry-after
600
via
1.1 varnish
x-cache
MISS
x-cache-hits
0
x-served-by
cache-kul9824-KUL, cache-kul9824-KUL
x-timer
S1770966159.166906,VS0,VE25
favicon.ico
detectportal.firefox.com/ 		146 B
203 B 		Other
General
Check archive.org
Download Go to
Full URL
https://detectportal.firefox.com/favicon.ico
Protocol
H2
Security
TLS 1.3, , AES_128_GCM
Server
34.107.221.82 Kansas City, United States, ASN396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US),
Reverse DNS
82.221.107.34.bc.googleusercontent.com
Software
nginx /
Resource Hash

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36
Referer
https://detectportal.firefox.com/canonical.html

Response headers

via
1.1 google
alt-svc
clear
content-length
146
date
Fri, 13 Feb 2026 06:59:29 GMT
age
190
content-type
text/html
server
nginx
truncated
/ 		3 KB
0 		Image
General
Check archive.org
Download Go to Show image
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
04d05978fdb111358073ab0524e5c1fafc0826615c206987618416b8bd8a4747

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36
Referer

Response headers

Content-Type
image/png
truncated
/ 		5 KB
0 		Image
General
Check archive.org
Download Go to Show image
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
e4222715b556e7d99622c83e620d2f8e090047e56adb07923047f95828d561f2

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36
Referer

Response headers

Content-Type
image/png
truncated
/ 		155 B
0 		Image
General
Check archive.org
Download Go to Show image
Full URL
data:truncated
Protocol
DATA
Server
-, , ASN (),
Reverse DNS
Software
/
Resource Hash
7808605ddd1f0eaa454aa444293d2f0260943e51e53838fca46506e6a69fe521

Request headers

User-Agent
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36
Referer

Response headers

Content-Type
image/png

Verdicts & Comments Add Verdict or Comment

58 JavaScript Window variables

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

object| crashReport function| assert function| getRequiredElement function| P function| S function| getRandomNum function| getTimeStamp object| Dimensions object| Config$2 function| getGlobalConfig function| setGlobalConfig object| Config$1 object| Config function| setMaxGapCoefficient function| setMaxObstacleLength object| Status object| A11yStrings object| RunnerClasses object| RunnerSounds object| RunnerEvents function| updateCanvasScaling function| getA11yString function| vibrate function| createCanvas function| decodeBase64ToArrayBuffer function| createAdjustedCollisionBox function| drawCollisionBoxes function| boxCompare function| toggleHelpBox function| diagnoseErrors function| portalSignin function| updateForDnsProbe function| getMainFrameErrorCssClass function| getMainFrameErrorIconCssClass function| getSubFrameErrorIconCssClass function| shouldShowSuggestionsSummaryList function| getSuggestionsSummaryItemCssClass function| reloadButtonClick function| downloadButtonClick function| detailsButtonClick function| setAutoFetchState function| savePageLaterClick function| cancelSavePageClick function| shouldShowControlButtons function| shouldShowDetailsButton function| getDetailsButtonCssClass function| getDetailsButtonText function| getButtonsCssClass function| updateInitialInstruction function| onDocumentLoad function| onTemplateDataReceived function| getHtml object| litPropertyMetadata object| reactiveElementVersions object| litHtmlVersions object| litElementVersions object| loadTimeDataRaw object| errorPageController

0 Cookies

2 Console Messages

Source Level URL
Text
network error URL: https://detectportal.firefox.com/favicon.ico
Message:
Failed to load resource: the server responded with a status of 404 ()
network error URL: chrome-error://chromewebdata/
Message:
Failed to load resource: the server responded with a status of 429 ()