How does PageSourceSearch know what bellairepubliclibrary.org 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 bellairepubliclibrary.org 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 bellairepubliclibrary.org?

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 bellairepubliclibrary.org?

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

bellairepubliclibrary.org

Built with swiper 12.2.0, gsap 3.15.0, jquery 2.4.37, gtag, jquery-ui 1.14.2, load-awesome 1.1.0, cloudinary-video-player 4.1.2, tooltipster 4.2.8, posthog-js 1.434.12, swagger-ui-dist 5.33.0, @raisenow/tamaro-core 2.19.3, bootstrap-datepicker 1.10.1 and more. 5 pages and 119 stored files, last crawled 2026-10-09.

36 libraries 2 identifiers 21 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
swiper	12.2.0	2026-10-09
gsap	3.15.0	2026-10-09
jquery	2.4.37	2026-10-09
gtag		2026-10-09
jquery-ui	1.14.2	2026-10-09
load-awesome	1.1.0	2026-10-09
cloudinary-video-player	4.1.2	2026-10-09
tooltipster	4.2.8	2026-10-09
posthog-js	1.434.12	2026-10-09
swagger-ui-dist	5.33.0	2026-10-09
@raisenow/tamaro-core	2.19.3	2026-10-09
bootstrap-datepicker	1.10.1	2026-10-09
@tabler/core	1.5.1	2026-10-09
recaptcha		2026-10-09
jquery-ui-dist	1.13.3	2026-10-09
@silvermine/videojs-quality-selector	1.3.1	2026-10-09
imagesloaded	5.0.0	2026-10-09
chosen-js	1.8.7	2026-10-09
@brainfish-ai/web-tracker	0.0.33	2026-10-09
vimeo-player		2026-10-09
dygraphs	2.2.2	2026-10-09
jsxgraph	1.13.3	2026-10-09
jquery.fancytree	2.38.5	2026-10-09
supafolio-sdk	1.4.1	2026-10-09
@jupyter-widgets/html-manager	1.0.15	2026-10-09
@microsoft/mgt	4.7.0	2026-10-09
vue3-sfc-loader	0.9.5	2026-10-09
jquery.flipster	1.1.6	2026-10-09
@vitest/utils	5.0.2	2026-10-09
mammoth-plus	2.0.2	2026-10-09
@collectionspace/cspace-public-browser	4.0.0	2026-10-09
@watergis/mapbox-gl-export	4.0.0	2026-10-09
wonder-image	2.1.2-alpha.4	2026-10-09
@figmania/svg-animate	1.3.0	2026-10-09
sheryjs	1.0.0-beta.0.1.8	2026-10-09
@grigorov-it/mazer	2.2.0	2026-10-09

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 Analytics 4 measurement id (Google)	G-Z4WFTKHJ6D	view source
reCAPTCHA site key (Google)	6Ld6itYqAAAAAOJWL-fU-zM_Td16wheFoqQMuSL-	view source

Third-party hosts

Hosts outside bellairepubliclibrary.org 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.whatsapp.com	connect	view source
browsehappy.com	connect	view source
cdn.elementor.com	script	view source
connect.facebook.net	connect	view source
fonts.googleapis.com	stylesheet	view source
github.com	connect	view source
img.youtube.com	connect	view source
maps.google.com	iframe	view source
player.vimeo.com	connect	view source
stats.wp.com	script	view source
twitter.com	connect	view source
unbound.syndetics.com	script	view source
vimeo.com	connect	view source
www.facebook.com	connect	view source
www.google.com	script	view source
www.googletagmanager.com	script	view source
www.linkedin.com	connect	view source
www.pinterest.com	connect	view source
www.w3.org	connect	view source
www.youtube-nocookie.com	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 119) }. 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
https://player.vimeo.com/api/player.js	js library	not fetched	2026-10-09	2026-10-09
https://www.google.com/recaptcha/api.js?render=explicit&ver=4.2.3	js library	not fetched	2026-10-09	2026-10-09
https://www.googletagmanager.com/gtag/js?id=G-Z4WFTKHJ6D	js library	not fetched	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…7310139d97dd4cece.bundle.min.js	js	12.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…9c0ea3c6fb0e51c58.bundle.min.js	js	13.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…7acd8570f1ce2dde3.bundle.min.js	js	14.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…f4233106e1245bd61.bundle.min.js	js	7.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…05c5cfaccbff3c14b.bundle.min.js	js	13.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…118980fb5aa03c82b.bundle.min.js	js	6.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…6351a1205655def47.bundle.min.js	js	7.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…b0373371215e60dab.bundle.min.js	js	3.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…91112675eb0b0c4d5.bundle.min.js	js	7.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…04741ba7d5a80c556.bundle.min.js	js	1.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…df1cf3198ae47b617.bundle.min.js	js	27.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…018eb312c83998279.bundle.min.js	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…847b13e8fe1f8bfc2.bundle.min.js	js	1.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…4a1df76e87a11eda2.bundle.min.js	js	8.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…88a0c19e95b3912b6.bundle.min.js	js	3.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…b8701c45ec5374829.bundle.min.js	js	1.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…69f426496c628ac6c.bundle.min.js	js	6.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…1ef5e40333f8066dd.bundle.min.js	js	5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…1e03a51a57a42528a.bundle.min.js	js	6.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…e54b95a68f0ad8c09.bundle.min.js	js	3.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…bf47b819947e7a2a7.bundle.min.js	js	4.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…eafeecde90cf7e0f4.bundle.min.js	js	2.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…1f7023819e3872142.bundle.min.js	js	7.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…952bd91349056fe78.bundle.min.js	js	8.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…cec83bf689b2f1f01.bundle.min.js	js	1012 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…b74f1b31471377df8.bundle.min.js	js	3.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…b5ff11c944a3a8ea9.bundle.min.js	js	1.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…e387cc28c07bae511.bundle.min.js	js	7.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…727d8428792223d2f.bundle.min.js	js	3.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…417f8a727b79f546f.bundle.min.js	js	5.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…4fcab8891b2e07802.bundle.min.js	js	746 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…790fd04afa5b6c0a3.bundle.min.js	js	4.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…185196aba9f2de4f4.bundle.min.js	js	14.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…2358f59857ce6f62f.bundle.min.js	js	5.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…61a9174be80f835c6.bundle.min.js	js	19.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…497535441dc0bc037.bundle.min.js	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…148ca20af32fc8e9f.bundle.min.js	js	2.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…f910b095554625156.bundle.min.js	js	4.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…2cf115553a2c4f709.bundle.min.js	js	6.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…8854fb1e1a80434b2.bundle.min.js	js	7.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…60888e308c5f64701.bundle.min.js	js	5.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…32b5d713d60752c7e.bundle.min.js	js	2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…5d665fd4392e5c905.bundle.min.js	js	29.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…3e4c8f36fb06aff31.bundle.min.js	js	865 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…e1a11007fe8c248f8.bundle.min.js	js	22 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…c4828db8d33cccbe9.bundle.min.js	js	464 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ments-handlers.min.js?ver=4.2.3	js	42.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/frontend.min.js?ver=4.2.3	js	23.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ck-pro.runtime.min.js?ver=4.2.3	js library	6.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=e3710df171bb081761bd	js	1.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=3825b4a45b5c6f3f04b9	js	4.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=b5773d96c9ff699a45dd	js	3.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=cee03bfee0063abbd5b8	js	4.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=eba0057e0fd877f08e9d	js	614 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=0dadaa0667a03645aee4	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=a8aa8890141fbcc3162a	js	3.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=3e90f3ec254086a30629	js	1.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=4208de2df2852e0b91ec	js	1.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=76866c0f9c1f9f397a02	js	10.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/build/js/underscore-after.js	js	230 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js/underscore.min.js?ver=1.13.8	js	18.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/build/js/underscore-before.js	js	358 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=694b0604b0c8eafed657	js	37.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=4f8807dfbd3260f16a53	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=9ae0925bbe975f92bef4	js	7.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ap-datepicker.min.js?ver=6.18.0	js	37.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=fc28903018fdbc8c4161	js	1.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=e17e8468e24cffc6f312	js	875 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=780fd76b5b819e3a6ece	js	2.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=815dcb1c3f3ef0030d5f	js	737 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=82f9d4de83ed0352be8e	js	3.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ipster.bundle.min.js?ver=6.13.0	js library	39 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=12685890ea84c4d19079	js	2.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=ecf90f33549e461a1048	js	9.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=6437a60c9a943cf8f472	js	1.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/swiper.min.js?ver=7.8.3	js	151.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=23e0a112f2a065e8e1d5	js	2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=334de69daa29ae826020	js	2.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=69dd4df02cf23f824e9a	js	2.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=c8b3a03472a267de758d	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=b0cf88d89b3e05e7d2ef	js	2.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=f767194b7f65f448d00e	js	2.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…y.nanoscroller.min.js?ver=7.8.3	js library	9.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…/ui/draggable.min.js?ver=1.14.2	js library	17.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…/ui/mouse.min.js?ver=1.14.2	js library	3.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=9c44e11f3503a33e9540	js	853 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=52b904c19ce12a16e6e9	js	6.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js/imagesloaded.min.js?ver=5.0.0	js	5.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/frontend.min.js?ver=4.3.4	js	58.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ontend-modules.min.js?ver=4.3.4	js	51.8 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…ebpack.runtime.min.js?ver=4.3.4	js	103 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/dflip.min.js?ver=2.4.37	js	240.6 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/the…hello-frontend.min.js?ver=3.3.0	js	1.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…link-prefetch.min.js?ver=4.21.0	js	2.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…zy-loader.min.js?ver=1791433236	js	609 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…/datepicker.min.js?ver=1.14.2	js	35.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…/ui/core.min.js?ver=1.14.2	js library	18.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=dd3d6ae95e727956a431	js	10 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…?ver=1dfe7db3940c23ea9216	js	5.7 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…?ver=f0f188028580e8dc1255	js	5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=dd3d6ae95e727956a431	js	50.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/rs6.min.js?ver=6.7.18	js	406.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/js/rbtools.min.js?ver=6.7.18	js	161.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…?ver=da75d0bdea6dde3898df	js	291 B	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/block/submit.js?ver=1720197829	js	3.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…/build/remediation-module.js	js	10 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…chosen.jquery.min.js?ver=2.5.21	js library	28.4 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…-filter-build.min.js?ver=2.5.21	js	64.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-content/plu…h-filter-elementor.js?ver=1.3.4	js	1.9 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js…jquery-migrate.min.js?ver=3.4.1	js	13.3 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/movies-music/	html	197.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	js library	85.5 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/contact-us/	html	211.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/the-library/about-us/	html	204.2 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/library-news/	html	230.1 KB	2026-10-09	2026-10-09
https://bellairepubliclibrary.org/	html	285.7 KB	2026-10-09	2026-10-09

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.

2026-10-09 first crawl

5 pages, 119 files, 3.1 MB; 37 libraries, 2 identifiers, 21 third-party hosts
37 libraries added
- @vitest/utils 5.0.2
- gtag
- recaptcha
- jquery.flipster 1.1.6
- @grigorov-it/mazer 2.2.0
- jsxgraph 1.13.3
- supafolio-sdk 1.4.1
- chosen-js 1.8.7
- sheryjs 1.0.0-beta.0.1.8
- @figmania/svg-animate 1.3.0
- gsap 3.15.0
- jquery 6.6.0
- and 25 more
2 identifiers added
- G-Z4WFTKHJ6D Google Analytics 4 measurement id
- 6Ld6itYqAAAAAOJWL-fU-zM_Td16wheFoqQMuSL- reCAPTCHA site key
21 third-party hosts added
119 files added

Questions about bellairepubliclibrary.org

How does PageSourceSearch know what bellairepubliclibrary.org 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 bellairepubliclibrary.org 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 bellairepubliclibrary.org?: 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 bellairepubliclibrary.org?: 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.