How does PageSourceSearch know what classforme.edu.vn 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 classforme.edu.vn 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 classforme.edu.vn?

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 classforme.edu.vn?

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

classforme.edu.vn

Built with gtm, gtag, @clerk/ui 1.34.0, @findify/bundle 7.1.108, html2canvas 1.4.1, @feathery/react 2.96.0, jspdf 4.2.1, kore-web-sdk 11.28.1, recharts 3.10.1, @cognigy/webchat 3.50.0, tableexport.jquery.plugin 1.33.0, cloudflare-insights and more. 5 pages and 207 stored files, last crawled 2026-10-02.

rank 316,811 45 libraries 3 identifiers 37 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
gtag		2026-10-02
@clerk/ui	1.34.0	2026-10-02
@findify/bundle	7.1.108	2026-10-02
html2canvas	1.4.1	2026-10-02
@feathery/react	2.96.0	2026-10-02
jspdf	4.2.1	2026-10-02
kore-web-sdk	11.28.1	2026-10-02
recharts	3.10.1	2026-10-02
@cognigy/webchat	3.50.0	2026-10-02
tableexport.jquery.plugin	1.33.0	2026-10-02
cloudflare-insights		2026-10-02
@brainfish-ai/web-tracker	0.0.33	2026-10-02
react-is		2026-10-02
cloudflare-email-decode		2026-10-02
formiojs	4.21.7	2026-10-02
face-age	2.4.6	2026-10-02
@adalong/widget	7.15.1	2026-10-02
@aurolabs/auro-back-to-top	1.1.0	2026-10-02
html2pdf.js	0.14.0	2026-10-02
fusioncharts	4.2.2	2026-10-02
@oiz/stzh-components	4.16.0	2026-10-02
artplayer-plugin-vast	1.0.0	2026-10-02
docs-searchbar.js	2.5.0	2026-10-02
@feedmepos/mf-inventory-portal	1.7.17	2026-10-02
@polar-sh/checkout	0.4.1	2026-10-02
@betterbugs/web-sdk	0.0.47	2026-10-02
@builder.io/webcomponents	2.0.2	2026-10-02
@sledge-app/js	2.0.114	2026-10-02
@formio/js	5.6.1	2026-10-02
@oracle/oraclejet	21.0.1	2026-10-02
@accusoft/pdf-viewer	3.11.158639	2026-10-02
@stytch/vanilla-js	6.3.0	2026-10-02
@everymatrix/player-profile-dashboard	1.21.0	2026-10-02
@okta/okta-signin-widget	7.49.1	2026-10-02
@percy.ai/hvs-funnel-overlay	0.5.13	2026-10-02
@percy.ai/your-team	1.1.10	2026-10-02
comindware.core.ui	2.1.149	2026-10-02
moment	2.29.4	2026-09-24
player-venom	0.3.6	2026-09-24
webc-miam	10.8.0	2026-09-24
@marimo-team/frontend	0.25.0	2026-09-24
simple-datatables	10.3.0	2026-09-24
@moveo-ai/web-client	0.117.0	2026-09-24
@tolgee/web	7.2.1	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
Bing site verification (Microsoft)	ED1B18A6EE8D40AA086DDFB40EACFD85	view source
Google Analytics 4 measurement id (Google)	G-7E20Y9N2C4	view source
Google Tag Manager container (Google)	GTM-KWV7P8P	view source

Third-party hosts

Hosts outside classforme.edu.vn 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
accounts.google.com	connect	view source
api.elsanow.io	connect	view source
api.mapbox.com	connect	view source
apps.apple.com	connect	view source
cdnc.heyzine.com	connect	view source
cdnjs.cloudflare.com	stylesheet connect	view source
chat.zalo.me	connect	view source
fcmregistrations.googleapis.com	connect	view source
firebaseinstallations.googleapis.com	connect	view source
fonts.googleapis.com	connect	view source
img.youtube.com	connect	view source
jspdf.default.namespaceuri	connect	view source
mui.com	connect	view source
noembed.com	connect	view source
oauth.zaloapp.com	connect	view source
online.gov.vn	connect	view source
play.google.com	connect	view source
reactjs.org	connect	view source
sfid.vn	connect	view source
static.cloudflareinsights.com	script	view source
storage.googleapis.com	connect	view source
t4.ftcdn.net	connect	view source
twitter.com	connect	view source
use.typekit.net	connect	view source
view.officeapps.live.com	connect	view source
wa.me	connect	view source
www.facebook.com	connect	view source
www.gamestolearnenglish.com	connect	view source
www.google.com	connect	view source
www.googletagmanager.com	iframe connect	view source
www.gstatic.com	connect	view source
www.instagram.com	connect	view source
www.storyberries.com	connect	view source
www.tiktok.com	connect	view source
www.w3.org	connect	view source
www.youtube.com	connect	view source
zalo.me	connect	view source

Stored pages and scripts

The newest stored version of each file, newest first@if (p.FilesTruncated) { (the 500 newest of 207) }. 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://static.cloudflareinsights.com/beacon.min…85bb4c19e7a9bdbcba1788362987495	js library	not fetched	2026-10-02	current
https://www.googletagmanager.com/gtm.js?id=	js library	not fetched	2026-10-02	current
https://classforme.edu.vn/_next/static/chunks/4521-73f884358b1f82be.js	js	11.8 KB	2026-10-02	current
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https://classforme.edu.vn/_next/static/chunks/8446-43847585ee9b6e32.js	js	14.7 KB	2026-10-02	current
https://classforme.edu.vn/_next/static/chunks/4342-c58765a33bdc122a.js	js	5.1 KB	2026-10-02	current
https://classforme.edu.vn/_next/static/chunks/4939-8dff896267c47e9a.js	js	8.7 KB	2026-10-02	current
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https://classforme.edu.vn/_next/static/chunks/pa…/listing-06c7d5e0fc896208.js	js	45.3 KB	2026-10-02	current
https://classforme.edu.vn/_next/static/chunks/pages/tutors-cf2d7011b652e8da.js	js	31.7 KB	2026-10-02	current
https://classforme.edu.vn/_next/static/chunks/pa…erms-of-use-533225a1874b7fe2.js	js	6.2 KB	2026-10-02	2026-10-02
https://classforme.edu.vn/_next/static/chunks/pa…/confirm-f59142f07f784b68.js	js	754 B	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, 202 files, 5 MB; 38 libraries, 3 identifiers, 37 third-party hosts
38 libraries added
- gtag
- gtm
- cloudflare-email-decode
- tableexport.jquery.plugin 1.33.0
- comindware.core.ui 2.1.149
- @findify/bundle 7.1.108
- @aurolabs/auro-back-to-top 1.1.0
- @oiz/stzh-components 4.16.0
- docs-searchbar.js 2.5.0
- @clerk/ui 1.34.0
- @cognigy/webchat 3.50.0
- @feathery/react 2.96.0
- and 26 more
3 identifiers added
- G-7E20Y9N2C4 Google Analytics 4 measurement id
- GTM-KWV7P8P Google Tag Manager container
- ED1B18A6EE8D40AA086DDFB40EACFD85 Bing site verification
39 third-party hosts added
- static.cloudflareinsights.com
- www.googletagmanager.com
- cdnjs.cloudflare.com
- reactjs.org
- www.w3.org
- fonts.googleapis.com
- use.typekit.net
- mui.com
- www.facebook.com
- zalo.me
- www.youtube.com
- www.tiktok.com
- and 27 more
202 files added

Questions about classforme.edu.vn

How does PageSourceSearch know what classforme.edu.vn 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 classforme.edu.vn 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 classforme.edu.vn?: 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 classforme.edu.vn?: 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.