How does PageSourceSearch know what modeleuropeanparliament.eu 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 modeleuropeanparliament.eu 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 modeleuropeanparliament.eu?

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 modeleuropeanparliament.eu?

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

modeleuropeanparliament.eu

Built with gsap 3.15.0, jquery 3.6.0, @covet-pics/covet-pics-widget 0.179.0, tooltipster 4.2.8, preact 10.29.8, bootstrap-datepicker 1.10.1, @silvermine/videojs-quality-selector 1.3.1, split-type 0.3.4, @adyen/adyen-web 6.45.2, cloudflare-turnstile, flexslider 2.7.2, isotope-layout 3.0.6 and more. 5 pages and 116 stored files, last crawled 2026-10-10.

39 libraries 0 identifiers 35 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
gsap	3.15.0	2026-10-10
jquery	3.6.0	2026-10-10
@covet-pics/covet-pics-widget	0.179.0	2026-10-10
tooltipster	4.2.8	2026-10-10
preact	10.29.8	2026-10-10
bootstrap-datepicker	1.10.1	2026-10-10
@silvermine/videojs-quality-selector	1.3.1	2026-10-10
split-type	0.3.4	2026-10-10
@adyen/adyen-web	6.45.2	2026-10-10
cloudflare-turnstile		2026-10-10
flexslider	2.7.2	2026-10-10
isotope-layout	3.0.6	2026-10-10
vimeo-player		2026-10-10
primevue	5.0.1	2026-10-10
face-age	2.4.6	2026-10-10
jsxgraph	1.13.3	2026-10-10
@nylas/web-elements	2.6.0	2026-10-10
hapi-video	1.2.2	2026-10-10
isotope-packery	2.0.1	2026-10-10
vue3-sfc-loader	0.9.5	2026-10-10
jquery.flipster	1.1.6	2026-10-10
jquery-form	4.3.0	2026-10-10
@vitest/utils	5.0.2	2026-10-10
framework7	9.1.3	2026-10-10
goo-motion-library	1.0.1	2026-10-10
mammoth-plus	2.0.2	2026-10-10
@flowbase-co/boosters-gsap-text-reveal	1.0.4	2026-10-10
@builder.io/webcomponents	2.0.2	2026-10-10
@glassesusa/dsm	4.6.2	2026-10-10
@collectionspace/cspace-public-browser	4.0.0	2026-10-10
anzhiyu-theme-static	1.1.10	2026-10-10
wonder-image	2.1.2-alpha.4	2026-10-10
sheryjs	1.0.0-beta.0.1.8	2026-10-10
jquery-datetime-picker	2.5.11	2026-10-10
@story-telling-reporter/react-embed-code-generator	2.2.20	2026-10-10
flowbitz	2.4.5	2026-10-10
@grigorov-it/mazer	2.2.0	2026-10-10
@websolutespa/llm-farmaciacarli	1.0.24	2026-10-10
@textea/json-viewer	4.0.1	2026-10-10

Tracking, tag and verification IDs

No analytics property, tag manager container, pixel or site-verification token was found in the stored source.

Third-party hosts

Hosts outside modeleuropeanparliament.eu 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
2.gravatar.com	connect	view source
ajax.googleapis.com	connect	view source
cdn1.iconfinder.com	connect	view source
challenges.cloudflare.com	script	view source
codepen.io	connect	view source
css-tricks.com	connect	view source
delicious.com	connect	view source
dev.w3.org	connect	view source
developer.mozilla.org	connect	view source
digg.com	connect	view source
drafts.csswg.org	connect	view source
fonts.googleapis.com	stylesheet connect	view source
github.com	connect	view source
googleads.g.doubleclick.net	connect	view source
html.spec.whatwg.org	connect	view source
i.ytimg.com	connect	view source
muddledramblings.com	connect	view source
paulirish.com	connect	view source
player.vimeo.com	connect	view source
reddit.com	connect	view source
srufaculty.sru.edu	connect	view source
static.doubleclick.net	connect	view source
twitter.com	connect	view source
vimeo.com	connect	view source
web.archive.org	connect	view source
webkit.org	connect	view source
www.adobe.com	connect	view source
www.apple.com	connect	view source
www.facebook.com	connect	view source
www.google.com	connect	view source
www.html5rocks.com	connect	view source
www.instagram.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 116) }. 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://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js	js library	not fetched	2026-10-10	2026-10-10
https://challenges.cloudflare.com/turnstile/v0/api.js	js library	not fetched	2026-10-10	2026-10-10
https://player.vimeo.com/api/player.js	js library	not fetched	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=8d30b8ec5750170987ce	js	966 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=76866c0f9c1f9f397a02	js	10.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/build/js/underscore-after.js	js	230 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/js/underscore.min.js?ver=1.13.8	js	18.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/build/js/underscore-before.js	js	358 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=694b0604b0c8eafed657	js	37.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=9ae0925bbe975f92bef4	js	7.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=e3710df171bb081761bd	js	1.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=3825b4a45b5c6f3f04b9	js	4.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=82f9d4de83ed0352be8e	js	3.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…ipster.bundle.min.js?ver=6.13.0	js library	39 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=b5773d96c9ff699a45dd	js	3.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=cee03bfee0063abbd5b8	js	4.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=780fd76b5b819e3a6ece	js	2.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=eba0057e0fd877f08e9d	js	614 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=0dadaa0667a03645aee4	js	2.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=a8aa8890141fbcc3162a	js	3.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=b0cf88d89b3e05e7d2ef	js	2.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=3e90f3ec254086a30629	js	1.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…ap-datepicker.min.js?ver=6.18.0	js	37.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=4208de2df2852e0b91ec	js	1.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=9c44e11f3503a33e9540	js	853 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…ada-fusion-slider.js?ver=5.16.2	js	16.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/lite-yt-embed.js?ver=7.1.3	js	3.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-title.js?ver=7.1.3	js	14.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…jquery.textillate.js?ver=3.16.2	js	5.8 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/SplitType.js?ver=3.16.2	js library	11.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-blog.js?ver=7.1.3	js	7.8 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-flexslider.js?ver=1	js	6.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…fusion-animations.js?ver=3.16.2	js	2.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-column.js?ver=3.16.2	js	1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-video.js?ver=3.16.2	js	2.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…-scroll-to-anchor.js?ver=3.16.2	js	4.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…onsive-typography.js?ver=3.16.2	js	3.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-scrollspy.js?ver=7.16.2	js	853 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/awb-scrollspy.js?ver=7.16.2	js	2.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-menu.js?ver=7.16.2	js	39.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-header.js?ver=7.16.2	js	31.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-to-top.js?ver=7.16.2	js	1.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-drop-down.js?ver=7.16.2	js	6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-container.js?ver=3.16.2	js	14.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-events.js?ver=3.16.2	js	3.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-countdown.js?ver=3.16.2	js	777 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…-background-slider.js?ver=7.1.3	js	2.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…sion-column-legacy.js?ver=7.1.3	js	1.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/fusion-animations.js?ver=7.1.3	js	2.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-flexslider.js?ver=7.1.3	js	6.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-alert.js?ver=7.1.3	js	260 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-privacy.js?ver=7.16.2	js	10.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-events.js?ver=7.16.2	js	3.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…da-contact-form-7.js?ver=7.16.2	js	1.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-rev-styles.js?ver=7.16.2	js	2.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-select.js?ver=7.16.2	js	1.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…-crossfade-images.js?ver=7.16.2	js	497 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…da-general-footer.js?ver=7.16.2	js	417 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/avada-quantity.js?ver=7.16.2	js	2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/lazysizes.js?ver=7.1.3	js	10.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…on-general-global.js?ver=3.16.2	js	886 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/vimeoPlayer.js?ver=2.2.1	js	37.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-youtube.js?ver=2.2.1	js	4.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.sticky-kit.js?ver=1.1.2	js	6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-sharing-box.js?ver=1	js	1.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-lightbox.js?ver=1	js	8.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-tooltip.js?ver=1	js	849 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-video-bg.js?ver=1	js	4.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-video-general.js?ver=1	js	3.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-parallax.js?ver=1	js	13.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/fusion-equal-heights.js?ver=1	js	1.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/imagesLoaded.js?ver=3.1.8	js	7.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/jquery.fade.js?ver=1	js	1.1 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.mousewheel.js?ver=3.0.6	js library	2.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…query.infinitescroll.js?ver=2.1	js	20.8 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.flexslider.js?ver=2.7.2	js	21.8 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.ilightbox.js?ver=2.2.3	js	81 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.fitvids.js?ver=1.1	js	2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/jquery.easing.js?ver=1.3	js	2.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th….requestAnimationFrame.js?ver=1	js	693 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/awb-tooltip.js?ver=1	js	10.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/awb-transition.js?ver=1	js	427 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/swiper.js?ver=12.1.4	js	150.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/packery.js?ver=2.0.0	js	13.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/isotope.js?ver=3.0.4	js	34.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/general/fusion.js?ver=3.16.2	js	4.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/library/modernizr.js?ver=3.3.1	js	30 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/js/library/cssua.js?ver=2.1.28	js	3.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…tical-menu-widget.js?ver=3.16.2	js	1.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/th…/awb-tabs-widget.js?ver=3.16.2	js	503 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/ScrollTrigger.js?ver=3.16.2	js library	42.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/min/library/gsap.js?ver=3.16.2	js	68.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/jquery.countdown.js?ver=3.16.2	js	4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=8a87b210cc3abb9b9387	js	78.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/j…/react.min.js?ver=18.3.1.1	js library	10.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/swiper.min.js?ver=5.0.10	js	140.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/js/mini-cart.js?ver=7.2.8	js	33.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/includes/js/index.js?ver=6.2.1	js	12.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/swv/js/index.js?ver=6.2.1	js	17.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/j…?ver=1dfe7db3940c23ea9216	js	5.7 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/j…?ver=f0f188028580e8dc1255	js	5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…?ver=da75d0bdea6dde3898df	js	291 B	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/wpdmpp-front.min.js?ver=7.2.8	js	15 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/public/js/sr7.js?ver=6.7.58	js	335 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/js/libs/tptools.js?ver=6.7.58	js	203.9 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/js/front.min.js?ver=3.3.72	js	27.4 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/js/wpdm.min.js?ver=7.1.3	js	3.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-content/pl…/wpdm-modal.min.js?ver=3.3.72	js	13.2 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/j…/jquery.form.min.js?ver=4.3.0	js	15.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/j…jquery-migrate.min.js?ver=3.4.1	js	13.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/session/64th-imep-oporto/	html	193.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/wp-includes/js/jquery/jquery.min.js?ver=3.7.1	js library	85.5 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/sessions/	html	171.8 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/about/	html	181.6 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/news/	html	150.3 KB	2026-10-10	2026-10-10
https://modeleuropeanparliament.eu/	html	221.7 KB	2026-10-10	2026-10-10

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.

2026-10-10 first crawl

5 pages, 116 files, 2.9 MB; 39 libraries, 0 identifiers, 35 third-party hosts
39 libraries added
- @vitest/utils 5.0.2
- jquery.flipster 1.1.6
- @grigorov-it/mazer 2.2.0
- jsxgraph 1.13.3
- jquery-form 4.3.0
- sheryjs 1.0.0-beta.0.1.8
- flowbitz 2.4.5
- face-age 2.4.6
- @story-telling-reporter/react-embed-code-generator 2.2.20
- gsap 3.15.0
- anzhiyu-theme-static 1.1.10
- @websolutespa/llm-farmaciacarli 1.0.24
- and 27 more
36 third-party hosts added
116 files added

Questions about modeleuropeanparliament.eu

How does PageSourceSearch know what modeleuropeanparliament.eu 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 modeleuropeanparliament.eu 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 modeleuropeanparliament.eu?: 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 modeleuropeanparliament.eu?: 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.