How does PageSourceSearch know what bahnexpress.fi 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 bahnexpress.fi 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 bahnexpress.fi?

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 bahnexpress.fi?

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

bahnexpress.fi

Built with gtag, @clerk/ui 1.34.0, @blotoutio/providers-blotout-consent-sdk 1.73.0, dashjs 5.2.1, posthog-js 1.434.12, @marimo-team/frontend 0.25.0, @inkeep/cxkit-js 0.5.119, facebook-pixel, @reachfive/identity-core 1.42.0, @reachfive/identity-ui 2.1.0, jspdf 4.2.1, spectorjs 0.9.33 and more. 5 pages and 216 stored files, last crawled 2026-10-02.

rank 1,049,007 20 libraries 1 identifier 33 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
gtag		2026-10-02
@clerk/ui	1.34.0	2026-10-02
@blotoutio/providers-blotout-consent-sdk	1.73.0	2026-10-02
dashjs	5.2.1	2026-10-02
posthog-js	1.434.12	2026-10-02
@marimo-team/frontend	0.25.0	2026-10-02
@inkeep/cxkit-js	0.5.119	2026-10-02
facebook-pixel		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
spectorjs	0.9.33	2026-10-02
@moveo-ai/web-client	0.117.0	2026-10-02
@recogito/annotorious	2.7.14	2026-10-02
@ant-design/x	2.9.0	2026-10-02
@inkeep/agents-ui-js-cloud	0.17.8	2026-10-02
@joyfill/components	4.0.0-rc26	2026-10-02
sonner	2.0.8	2026-10-02
kuroshiro	1.2.0	2026-10-02
@tulipnpm/timekit_project_selector	2.1.4	2026-09-25

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
TikTok pixel id (TikTok)	D7OFDGBC77U471PH16NG	view source

Third-party hosts

Hosts outside bahnexpress.fi 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
api-iam.au.intercom.io	connect	view source
api-iam.eu.intercom.io	connect	view source
api-iam.intercom.io	connect	view source
api.mapbox.com	connect	view source
app.bahnexpress.dev	connect	view source
app.posthog.com	connect	view source
base.invalid	connect	view source
cdn.jsdelivr.net	stylesheet	view source
connect.facebook.net	connect	view source
drive.bahnexpress.dev	connect	view source
eu.i.posthog.com	connect	view source
eu.posthog.com	connect	view source
example.com	connect	view source
github.com	connect	view source
ihr-service.com	connect	view source
json-schema.org	connect	view source
palvelusi.com	connect	view source
react.dev	connect	view source
s3attachmentsbucketstack-prodattachmentsbuckete614-wlmu8swjo8zr.s3.eu-north-1.amazonaws.com	connect	view source
sentry.io	connect	view source
us.i.posthog.com	connect	view source
us.posthog.com	connect	view source
va.vercel-scripts.com	connect	view source
vercel.live	connect	view source
webinar.bahnexpress.de	connect	view source
widget.intercom.io	connect	view source
www.facebook.com	connect	view source
www.googletagmanager.com	iframe	view source
www.linkedin.com	connect	view source
www.redditstatic.com	connect	view source
www.w3.org	connect	view source
yandex.com	connect	view source
your-service.com	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 216) }. 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/fbevents.js	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtag/js?id=AW-18120436450	js library	not fetched	2026-10-02	current
https://app.bahnexpress.fi/_next/static/chunks/0y69aqt2p_pr0.js	js	1 KB	2026-10-02	2026-10-02
https://app.bahnexpress.fi/_next/static/chunks/0attzky5hpbh8.js	js	271 B	2026-10-02	current
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https://app.bahnexpress.fi/_next/static/chunks/03dxgo7pjm37i.js	js	1 KB	2026-10-02	2026-10-02
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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, 138 files, 5.4 MB; 19 libraries, 1 identifier, 33 third-party hosts
19 libraries added
- @inkeep/agents-ui-js-cloud 0.17.8
- @clerk/ui 1.34.0
- @ant-design/x 2.9.0
- posthog-js 1.434.12
- jspdf 4.2.1
- @reachfive/identity-core 1.42.0
- @recogito/annotorious 2.7.14
- dashjs 5.2.1
- @reachfive/identity-ui 2.1.0
- @marimo-team/frontend 0.25.0
- @blotoutio/providers-blotout-consent-sdk 1.73.0
- sonner 2.0.8
- and 7 more
1 identifier added
- D7OFDGBC77U471PH16NG TikTok pixel id
33 third-party hosts added
- www.googletagmanager.com
- cdn.jsdelivr.net
- react.dev
- www.w3.org
- vercel.live
- base.invalid
- va.vercel-scripts.com
- www.linkedin.com
- webinar.bahnexpress.de
- eu.posthog.com
- json-schema.org
- api.mapbox.com
- and 21 more
138 files added

Questions about bahnexpress.fi

How does PageSourceSearch know what bahnexpress.fi 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 bahnexpress.fi 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 bahnexpress.fi?: 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 bahnexpress.fi?: 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.