How does PageSourceSearch know what u4.no is built with?

From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.

How far back does the history of u4.no go?

To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.

Can I see an older version of a script from u4.no?

Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.

Which other websites use the same tracking IDs as u4.no?

Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Site profile

u4.no

Built with gtm, @clerk/ui 1.34.0, bromcom-ui 2.12.3, highcharts 9.3.3, dashjs 2.5.0, tinymce 8.9.2, @inkeep/cxkit-js 0.5.119, @feathery/react 2.96.0, facebook-sdk, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1 and more. 5 pages and 160 stored files, last crawled 2026-10-02.

rank 404,273 35 libraries 1 identifier 62 third-party hosts 1 crawl open the site

Technologies and libraries

Recognised by fingerprinting the stored files and bundles against known releases; a version is the release the bytes match.

Library	Version	Seen
gtm		2026-10-02
@clerk/ui	1.34.0	2026-10-02
bromcom-ui	2.12.3	2026-10-02
highcharts	9.3.3	2026-10-02
dashjs	2.5.0	2026-10-02
tinymce	8.9.2	2026-10-02
@inkeep/cxkit-js	0.5.119	2026-10-02
@feathery/react	2.96.0	2026-10-02
facebook-sdk		2026-10-02
@reachfive/identity-core	1.42.0	2026-10-02
@reachfive/identity-ui	2.1.0	2026-10-02
jspdf	4.2.1	2026-10-02
kore-web-sdk	11.28.1	2026-10-02
@cognigy/webchat	3.50.0	2026-10-02
vimeo-player		2026-10-02
@adalong/widget	7.15.1	2026-10-02
webex	3.12.0	2026-10-02
venom-player	0.2.92	2026-10-02
ovenplayer	0.10.54	2026-10-02
graphql-playground-react	1.7.28	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@tulipnpm/timekit_project_selector	2.1.4	2026-10-02
@pdftron/webviewer	12.1.0	2026-10-02
@sledge-app/js	2.0.114	2026-10-02
@formio/js	5.6.1	2026-10-02
@tsocial/tvweb-sdk	5.38.6	2026-10-02
@okta/okta-signin-widget	7.49.1	2026-10-02
@formbird/angular-elements	8.5.10	2026-10-02
wonder-image	2.1.2-alpha.4	2026-10-02
@joyfill/components	4.0.0-rc26	2026-10-02
@percy.ai/your-team	1.1.10	2026-10-02
d3	7.9.0	2026-09-24
@segment/vimeo-analytics	2.0.0	2026-09-24
formiojs	4.21.7	2026-09-24
scanbot-web-sdk	9.0.0	2026-09-24

Tracking, tag and verification IDs

Public identifiers read out of the source. Each links to every other site in the index that carries the same one.

What	Value	Found in
Google site verification (Google)	IuEUdfNVUT1nJ-DJUcrg99bbRIha348aLY0tC4tOIk0	view source

Third-party hosts

Hosts outside u4.no that its pages load scripts, frames or stylesheets from, and that its own scripts name in absolute URLs (connect). Each links to every site loading from the same host.

Host	Loaded as	Found in
34f28f12080e435795254ec8886248ba.eu-central-1.aws.cloud.es.io	connect	view source
acme.com	connect	view source
api.dmcdn.net	connect	view source
api.pinterest.com	connect	view source
api.sanity.io	connect	view source
api.tumblr.com	connect	view source
api.vid.me	connect	view source
b.hatena.ne.jp	connect	view source
bookmark.hatenaapis.com	connect	view source
bsky.app	connect	view source
cdn.jsdelivr.net	connect	view source
cdn.sanity.io	connect	view source
cdnjs.cloudflare.com	connect	view source
cmi.us16.list-manage.com	connect	view source
connect.mail.ru	connect	view source
connect.ok.ru	connect	view source
creativecommons.org	connect	view source
docs.sanity.io	connect	view source
documentcloud.adobe.com	connect	view source
eepurl.com	connect	view source
example.com	connect	view source
fonts.googleapis.com	connect	view source
fonts.gstatic.com	connect	view source
gab.com	connect	view source
getpocket.com	connect	view source
github.com	connect	view source
graph.facebook.com	connect	view source
linkedin.com	connect	view source
pinterest.com	connect	view source
player.vimeo.com	connect	view source
react.dev	connect	view source
reactjs.org	connect	view source
sanity.io	connect	view source
service.weibo.com	connect	view source
social-plugins.line.me	connect	view source
streamable.com	connect	view source
telegram.me	connect	view source
threads.net	connect	view source
traccc.gmu.edu	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
vercel.live	connect	view source
vimeo.com	connect	view source
vk.com	connect	view source
w.soundcloud.com	connect	view source
work.facebook.com	connect	view source
www.cmi.no	connect	view source
www.dailymotion.com	connect	view source
www.facebook.com	connect	view source
www.googletagmanager.com	connect	view source
www.highcharts.com	connect	view source
www.instapaper.com	connect	view source
www.linkedin.com	connect	view source
www.livejournal.com	connect	view source
www.reddit.com	connect	view source
www.sanity.io	connect	view source
www.traffic.org	connect	view source
www.tumblr.com	connect	view source
www.usaid.gov	connect	view source
www.w3.org	connect	view source
www.worldwildlife.org	connect	view source
www.youtube.com	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 160) }. Versions are the crawls at which the file was new or its content changed; each opens the file as it was then, rebuilt from the same stored chunks.

File	Kind	Size	Collected	Versions
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https://connect.facebook.net/en_US/sdk.js	js library	not fetched	2026-10-02	current
https://player.vimeo.com/api/player.js	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js?id=	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js?id=GTM-KVW5J96	js library	not fetched	2026-10-02	current
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Timeline

One entry per crawl, newest first, with what changed since the crawl before: libraries, identifiers, third-party hosts and files. Historical versions stay viewable because the stored chunks are shared between versions, never copied.

2026-10-02 first crawl

5 pages, 160 files, 7.5 MB; 32 libraries, 1 identifier, 62 third-party hosts
32 libraries added
- @inkeep/cxkit-js 0.5.119
- @clerk/ui 1.34.0
- @okta/okta-signin-widget 7.49.1
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @reachfive/identity-ui 2.1.0
- ovenplayer 0.10.54
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- graphql-playground-react 1.7.28
- @cognigy/webchat 3.50.0
- @sledge-app/js 2.0.114
- and 20 more
1 identifier added
- IuEUdfNVUT1nJ-DJUcrg99bbRIha348aLY0tC4tOIk0 Google site verification
62 third-party hosts added
- react.dev
- www.w3.org
- sanity.io
- www.sanity.io
- api.sanity.io
- acme.com
- fonts.googleapis.com
- use.typekit.net
- www.facebook.com
- www.linkedin.com
- bsky.app
- eepurl.com
- and 50 more
160 files added

Questions about u4.no

How does PageSourceSearch know what u4.no is built with?: From the site's own source code. The crawler stores the exact bytes of its pages and first-party scripts; the libraries are recognised by fingerprinting that code against known releases, the identifiers are read out of the tag snippets, and the third-party hosts are the script, iframe and stylesheet sources in the HTML and the absolute URLs inside the scripts. Nothing is inferred from headers or guessed.
How far back does the history of u4.no go?: To the first crawl the timeline lists. Every crawl records what the site looked like; when a file's content changes, its earlier version stays viewable because the stored chunks are never deleted, only mapped. A crawl that finds a file unchanged adds no copy.
Can I see an older version of a script from u4.no?: Yes. In the stored files list, every date under a file opens the version that was live at that crawl, with the same viewer as the current one. The raw bytes can be downloaded from there.
Which other websites use the same tracking IDs as u4.no?: Each identifier links to its reverse lookup, the list of every site in the index whose source carries the same id: the sites one analytics property or tag manager container is shared across.

Look up another site, browse sites by tracking ID, third-party host or technology. Site owners: see the crawler page for how stored pages are removed.