www.eurosurveillance.org

Summary

This website contacted 4 IPs in 2 countries across 4 domains to perform 7 HTTP transactions. The main IP is 104.26.13.128, located in United States and belongs to CLOUDFLARENET, US. The main domain is www.eurosurveillance.org.
TLS certificate: Issued by Cloudflare Inc ECC CA-3 on May 18th 2022. Valid for: a year.

This is the only time www.eurosurveillance.org was scanned on urlscan.io!

urlscan.io Verdict: No classification

Domain & IP information

	IP Address	AS Autonomous System
1 4	104.26.13.128 104.26.13.128	13335 (CLOUDFLAR...) (CLOUDFLARENET)
1	2a00:1450:400... 2a00:1450:4001:813::200a	15169 (GOOGLE) (GOOGLE)
1	2606:4700::68... 2606:4700::6810:3965	13335 (CLOUDFLAR...) (CLOUDFLARENET)
2	2a00:1450:400... 2a00:1450:4001:806::2003	15169 (GOOGLE) (GOOGLE)
7	4

4 104.26.13.128 (United States) 1 redirects

ASN13335 (CLOUDFLARENET, US)

www.eurosurveillance.org	Domain lookup VirusTotal SecurityTrails crt.sh Censys Domaintools

1 2a00:1450:4001:813::200a (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

1 2606:4700::6810:3965 (United States)

ASN13335 (CLOUDFLARENET, US)

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

2 2a00:1450:4001:806::2003 (Frankfurt am Main, Germany)

ASN15169 (GOOGLE, US)

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

	Apex Domain Subdomains	Transfer
4	eurosurveillance.org 1 redirects www.eurosurveillance.org	12 KB
2	gstatic.com fonts.gstatic.com	75 KB
1	cloudflareinsights.com static.cloudflareinsights.com — Cisco Umbrella Rank: 1039	6 KB
1	googleapis.com fonts.googleapis.com — Cisco Umbrella Rank: 43	1 KB
7	4

	Domain	Requested by
4	www.eurosurveillance.org	1 redirects www.eurosurveillance.org static.cloudflareinsights.com
2	fonts.gstatic.com	fonts.googleapis.com
1	static.cloudflareinsights.com	www.eurosurveillance.org
1	fonts.googleapis.com	www.eurosurveillance.org
7	4

This site contains no links.

Subject Issuer	Validity	Valid
sni.cloudflaressl.com Cloudflare Inc ECC CA-3	`2022-05-18` - `2023-05-18`	a year	crt.sh
upload.video.google.com GTS CA 1C3	`2022-10-25` - `2023-01-17`	3 months	crt.sh
*.gstatic.com GTS CA 1C3	`2022-10-25` - `2023-01-17`	3 months	crt.sh

This page contains 1 frames:

Primary Page: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
Frame ID: 6F4DBB71D59F0B96FBA6C6E03182890C
Requests: 7 HTTP requests in this frame

Screenshot
Live screenshot

Full Image

Page Title

Table 1

Page URL History Show full URLs

http://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen... HTTP 301
https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen... Page URL

Detected technologies

Cloudflare Browser Insights (Analytics) Expand

Overall confidence: 100%
Detected patterns

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

Google Font API (Font Scripts) Expand

Overall confidence: 100%
Detected patterns

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

Page Statistics

7
Requests

100 %
HTTPS

75 %
IPv6

4
Domains

4
Subdomains

4
IPs

2
Countries

94 kB
Transfer

254 kB
Size

1
Cookies

0 Outgoing links

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

Page URL History

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

http://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true HTTP 301
https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true Page URL

Redirected requests

There were HTTP redirect chains for the following requests:

7 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 1560-7917.ES.2021.26.44.2100441.t1 Show response
www.eurosurveillance.org/content/table/10.2807/
Redirect Chain

http://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true

134 KB
6 KB

230ms
195ms

Document
text/html

104.26.13.128
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.26.13.128 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 846c8859b6284264361e6a66ff55f946e5a23b1995a77eaaad9f997c79c407cb

Request headers

Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.110 Safari/537.36
accept-language: de-DE,de;q=0.9

Response headers

cache-control: no-cache
cf-cache-status: DYNAMIC
cf-ray: 76ac8d453cc468fd-FRA
content-encoding: br
content-language: es
content-type: text/html; charset=UTF-8
date: Wed, 16 Nov 2022 01:46:15 GMT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
pragma: no-cache
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=Z4y4ZsnONRXwka%2FAUbBy%2B%2FnPQ4Yinvw%2BVfjfuWvI%2Bto9t4L4ea3gDY6NY9v9UzQr5J8xJxdlhUkk2v1NXSym%2B7bg8%2BK1V0aonB2ChSBtPwJJSzsfTXt3QJJ7Lp8k77ndFcTeNJDbauXoCA%3D%3D"}],"group":"cf-nel","max_age":604800}
server: cloudflare
vary: Accept-Encoding

Redirect headers

CF-Cache-Status: DYNAMIC
CF-RAY: 76ac8d447bc6bba9-FRA
Connection: keep-alive
Content-Type: text/html; charset=iso-8859-1
Date: Wed, 16 Nov 2022 01:46:15 GMT
Location: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=Ldj1tSoDRqQKdcfNkRNvZMCkKWLbXad%2BvojCWiwy1t5%2BnAPDilCo%2BIBIIJhrq1y6m4wmDk78%2BE8ZN08K%2Fcn%2B036FwYhrU%2BzN5QZ02KRjPIZL6RdjY8K95v4qAlNoAoYdQ68SqWOtk9PznA%3D%3D"}],"group":"cf-nel","max_age":604800}
Server: cloudflare
Server-Timing: cf-q-config;dur=6.9999996412662e-06
Transfer-Encoding: chunked

GET
H2 200 css
fonts.googleapis.com/ 5 KB
1 KB 72ms
27ms Stylesheet
text/css 2a00:1450:4001:813::200a
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.googleapis.com/css?family=Open+Sans:400,600

Requested by

Host: www.eurosurveillance.org
URL: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:813::200a Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

ESF /

Resource Hash

0690262903337c5392e015553dd03594040f0c86bfe53f1a3200f619d9e6d499

Security Headers

Name	Value
Strict-Transport-Security	max-age=31536000
X-Content-Type-Options	nosniff
X-Frame-Options	SAMEORIGIN
X-Xss-Protection	0

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://www.eurosurveillance.org/
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.110 Safari/537.36

Response headers

strict-transport-security: max-age=31536000
date: Wed, 16 Nov 2022 01:46:15 GMT
content-encoding: gzip
x-content-type-options: nosniff
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"
x-xss-protection: 0
last-modified: Wed, 16 Nov 2022 01:20:38 GMT
server: ESF
cross-origin-opener-policy: same-origin-allow-popups
x-frame-options: SAMEORIGIN
content-type: text/css; charset=utf-8
access-control-allow-origin: *
cache-control: private, max-age=86400, stale-while-revalidate=604800
timing-allow-origin: *
link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin
expires: Wed, 16 Nov 2022 01:46:15 GMT

GET
H2 200 fulltext-html-tab.css
www.eurosurveillance.org/css/instance/ 24 KB
5 KB 27ms
26ms Stylesheet
text/css 104.26.13.128
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://www.eurosurveillance.org/css/instance/fulltext-html-tab.css
Requested by: Host: www.eurosurveillance.org
URL: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 104.26.13.128 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 08aa2add02348a6c2d4f935ea1d2446f050be6a473eb5c82186f2c23aebd55db

Request headers

accept-language: de-DE,de;q=0.9
Referer: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.5304.110 Safari/537.36

Response headers

date: Wed, 16 Nov 2022 01:46:15 GMT
content-encoding: br
cf-cache-status: HIT
last-modified: Tue, 29 Mar 2022 12:41:48 GMT
nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
server: cloudflare
age: 224
etag: W/"5f46-5db5ac093bb00-gzip"
vary: Accept-Encoding
report-to: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=SxcJ%2BcWEYecybBSqCwhslg%2FmV30TtrxnKUb3QsRWXOMcHRvzBa6ZSw%2BYPBrhcmOpALmZ5Ji5bUTiogXeFarnCPWwlQzz3V3lQrisO%2FCik29KMN1SLTAFjSROYecmE7ykBhUEb51VHRXoLA%3D%3D"}],"group":"cf-nel","max_age":604800}
content-type: text/css
cache-control: public, max-age=86400, no-cache="set-cookie"
cf-ray: 76ac8d467e6468fd-FRA

GET
H2 200 vaafb692b2aea4879b33c060e79fe94621666317369993 Show response
static.cloudflareinsights.com/beacon.min.js/ 17 KB
6 KB 91ms
51ms Script
text/javascript 2606:4700::6810:3965
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL: https://static.cloudflareinsights.com/beacon.min.js/vaafb692b2aea4879b33c060e79fe94621666317369993
Requested by: Host: www.eurosurveillance.org
URL: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
Protocol: H2
Security: TLS 1.3, , AES_128_GCM
Server: 2606:4700::6810:3965 , United States, ASN13335 (CLOUDFLARENET, US),
Reverse DNS
Software: cloudflare /
Resource Hash: 0f48c5678ce459a596423b0e55344e7ad8eb3d3b1b27c54cd76a9d4cee7dd6c3

Request headers

Referer: https://www.eurosurveillance.org/
Origin: https://www.eurosurveillance.org
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/107.0.5304.110 Safari/537.36

Response headers

date: Wed, 16 Nov 2022 01:46:15 GMT
content-encoding: gzip
last-modified: Fri, 21 Oct 2022 01:56:09 GMT
server: cloudflare
etag: W/2022.10.1
vary: Accept-Encoding
content-type: text/javascript;charset=UTF-8
access-control-allow-origin: *
cache-control: public, max-age=86400
cross-origin-resource-policy: cross-origin
cf-ray: 76ac8d46cca89159-FRA

GET
H2 200 memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2
fonts.gstatic.com/s/opensans/v34/ 44 KB
44 KB 55ms
15ms Font
font/woff2 2a00:1450:4001:806::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-muw.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Open+Sans:400,600

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:806::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

8778e9af2422858d7052ff9a0f3c12c08ae976bdd6e0316db144cd5579cd97db

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Referer: https://fonts.googleapis.com/
Origin: https://www.eurosurveillance.org
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/107.0.5304.110 Safari/537.36

Response headers

date: Sat, 12 Nov 2022 16:15:31 GMT
x-content-type-options: nosniff
age: 293444
content-security-policy-report-only: require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
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: 44856
x-xss-protection: 0
last-modified: Mon, 15 Aug 2022 18:20:18 GMT
server: sffe
cross-origin-opener-policy: same-origin; report-to="apps-themes"
report-to: {"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
expires: Sun, 12 Nov 2023 16:15:31 GMT

GET
H2 200 memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSGmu1aB.woff2
fonts.gstatic.com/s/opensans/v34/ 31 KB
31 KB 61ms
36ms Font
font/woff2 2a00:1450:4001:806::2003
GOOGLE

General

Check archive.org

Show headers Download Go to

Full URL

https://fonts.gstatic.com/s/opensans/v34/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTSGmu1aB.woff2

Requested by

Host: fonts.googleapis.com
URL: https://fonts.googleapis.com/css?family=Open+Sans:400,600

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

2a00:1450:4001:806::2003 Frankfurt am Main, Germany, ASN15169 (GOOGLE, US),

Reverse DNS

Software

sffe /

Resource Hash

24c0e724005344165ee0a0ff4c96a914e174bb4caa20c8a533fb194d92853e95

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Xss-Protection	0

Request headers

Referer: https://fonts.googleapis.com/
Origin: https://www.eurosurveillance.org
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/107.0.5304.110 Safari/537.36

Response headers

date: Mon, 14 Nov 2022 19:00:06 GMT
x-content-type-options: nosniff
age: 110769
content-security-policy-report-only: require-trusted-types-for 'script'; report-uri https://csp.withgoogle.com/csp/apps-themes
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: 31320
x-xss-protection: 0
last-modified: Mon, 15 Aug 2022 18:11:37 GMT
server: sffe
cross-origin-opener-policy: same-origin; report-to="apps-themes"
report-to: {"group":"apps-themes","max_age":2592000,"endpoints":[{"url":"https://csp.withgoogle.com/csp/report-to/apps-themes"}]}
content-type: font/woff2
access-control-allow-origin: *
cache-control: public, max-age=31536000
accept-ranges: bytes
timing-allow-origin: *
expires: Tue, 14 Nov 2023 19:00:06 GMT

POST
H2 204 rum Show response
www.eurosurveillance.org/cdn-cgi/ 0
189 B 18ms
18ms XHR
text/plain 104.26.13.128
CLOUDFLARENET

General

Check archive.org

Show headers Download Go to

Full URL

https://www.eurosurveillance.org/cdn-cgi/rum?

Requested by

Host: static.cloudflareinsights.com
URL: https://static.cloudflareinsights.com/beacon.min.js/vaafb692b2aea4879b33c060e79fe94621666317369993

Protocol

H2

Security

TLS 1.3, , AES_128_GCM

Server

104.26.13.128 , United States, ASN13335 (CLOUDFLARENET, US),

Reverse DNS

Software

cloudflare /

Resource Hash

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Security Headers

Name	Value
X-Content-Type-Options	nosniff
X-Frame-Options	DENY

Request headers

Referer: https://www.eurosurveillance.org/content/table/10.2807/1560-7917.ES.2021.26.44.2100441.t1?fmt=ahah&fullscreen=true
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/107.0.5304.110 Safari/537.36
content-type: application/json

Response headers

date: Wed, 16 Nov 2022 01:46:15 GMT
x-content-type-options: nosniff
server: cloudflare
vary: Origin
access-control-max-age: 86400
access-control-allow-methods: POST,OPTIONS
access-control-allow-origin: https://www.eurosurveillance.org
x-frame-options: DENY
access-control-allow-credentials: true
cf-ray: 76ac8d47e87468fd-FRA

Verdicts & Comments Add Verdict or Comment

2 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.

function| quitBox object| __cfBeacon

1 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
			www.eurosurveillance.org/	1969-12-31 23:59:59	Name: JSESSIONID Value: Wx35pvNS7gZFHIzU_YZ5L4f4hEdyEkwhuwUJ_pZX.i-0b3d9850f4681504f-ecdclive

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.

fonts.googleapis.com
fonts.gstatic.com
static.cloudflareinsights.com
www.eurosurveillance.org
104.26.13.128
2606:4700::6810:3965
2a00:1450:4001:806::2003
2a00:1450:4001:813::200a
0690262903337c5392e015553dd03594040f0c86bfe53f1a3200f619d9e6d499
08aa2add02348a6c2d4f935ea1d2446f050be6a473eb5c82186f2c23aebd55db
0f48c5678ce459a596423b0e55344e7ad8eb3d3b1b27c54cd76a9d4cee7dd6c3
24c0e724005344165ee0a0ff4c96a914e174bb4caa20c8a533fb194d92853e95
846c8859b6284264361e6a66ff55f946e5a23b1995a77eaaad9f997c79c407cb
8778e9af2422858d7052ff9a0f3c12c08ae976bdd6e0316db144cd5579cd97db
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

www.eurosurveillance.org Open in urlscan Pro 104.26.13.128 Public Scan

Summary

urlscan.io Verdict: No classification

Domain & IP information

Screenshot Live screenshot Full Image

Page Title

Page URL History Show full URLs

Detected technologies

Page Statistics

7 Requests

100 %HTTPS

75 %IPv6

4 Domains

4 Subdomains

4 IPs

2 Countries

94 kBTransfer

254 kBSize

1 Cookies

0 Outgoing links

Page URL History

Redirected requests

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

Request headers

Response headers

Redirect headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Request headers

Response headers

Verdicts & Comments Add Verdict or Comment

2 JavaScript Global Variables

1 Cookies

Indicators

www.eurosurveillance.org Open in urlscan Pro
104.26.13.128 Public Scan

Screenshot
Live screenshot

Full Image

7
Requests

100 %
HTTPS

75 %
IPv6

4
Domains

4
Subdomains

4
IPs

2
Countries

94 kB
Transfer

254 kB
Size

1
Cookies

7 HTTP transactions
0 data transactions