# booking.com We have not found a subprocessor list published by booking.com. We monitor 6 of its documents, which we last checked on 2026-11-11. booking.com (booking.com): subprocessors, data processing agreement, security documents and changes, as monitored by Third Party Index. - Page: https://thirdpartyindex.com/vendors/booking-com - Documents last verified: 2026-11-11 - Transparency rating: 45/100 (how much it publishes, not how secure it is): Subprocessor list 0/30 (not found); Processing locations 0/8 (no list); Purposes 0/7 (no list); Data processing addendum 12/12; Trust center 8/8; Privacy policy 6/6; security.txt 6/6; Security page 5/5; Status page 0/5 (not found); Vulnerability disclosure 0/5 (not found); Pages still reachable 8/8 - Supply chain: relies on 0 tracked vendors directly, 0 within two hops, 0 within three; 0 tracked vendors rely on it directly, 0 within two hops, 0 within three - Cite as: booking.com, Third Party Index, https://thirdpartyindex.com/vendors/booking-com (data CC BY 4.0) ## Documents | Document | URL | Last verified | Last changed | |---|---|---|---| | Trust center | https://www.booking.com/searchresults.html?si=ai%2Cco%2Cci%2Cre%2Cla%2Cdi;dest\_type=city;dest\_id=-2610248;ifl=1;aid=304142;label=gen173nr-10CBcoggI46AdIM1gEaKsCiAEBmAEzuAEZyAEM2AED6AEB-AEBiAIBqAIBuAL-6sbVBsACAdICJDQ0MDEyODJlLTMwNWMtNDgwMC04ZGUzLThiZWE0ZGUzYWYwOdgCAeACAQ&chal\_t=1790031230744&force\_referer= | 2026-11-11 | 2026-11-11 | | Data processing addendum | https://www.booking.com/searchresults.html?si=ai%2Cco%2Cci%2Cre%2Cla%2Cdi;dest\_type=city;dest\_id=20035591;ifl=1;aid=304142;label=mkt123sc-6db0ff13-3806-4184-93f2-a85bea303eb2&chal\_t=1790031257336&force\_referer= | 2026-11-11 | 2026-11-11 | | Privacy policy | https://www.booking.com/content/privacy.html | 2026-11-11 | 2026-11-10 | | Terms | https://www.booking.com/content/terms.html | 2026-11-11 | 2026-11-10 | | Security page | https://www.booking.com/searchresults.html?si=ai%2Cco%2Cci%2Cre%2Cla%2Cdi;dest\_type=landmark;dest\_id=900112644;ifl=1;aid=304142;label=gen173nr-10CBcoggI46AdIM1gEaKsCiAEBmAEzuAEZyAEM2AED6AEB-AEBiAIBqAIBuAK168bVBsACAdICJGI5N2RhNjViLWJkZGYtNGIxOS05MGZhLTY3MzI3NDU3MDJjYtgCAeACAQ&chal\_t=1790031285967&force\_referer= | 2026-11-11 | 2026-11-11 | | security.txt | https://www.booking.com/.well-known/security.txt | 2026-11-11 | 2026-10-19 | ## Subprocessors (0) No subprocessor list has been found or read for this vendor. ## Web Technologies booking.com's homepage made 353 requests to 27 domains, 16 services controlled by another company, and 2 domains not identified. Loaded on 2026-11-03 by a browser that accepted nothing; other visits may load more or less. What a page loads is not a list of who receives customer data. 16 third parties by category: Advertising 13 (The Trade Desk, Inc., Google Cloud, Microsoft, ID5 Technology Ltd, Amazon, LY Corporation, Reddit, Inc.; reviewed: Criteo, BidSwitch GmbH, Index Exchange Inc.; usually detected as Advertising: Xandr, PubMatic, Magnite, Inc.); Cookie compliance 1 (OneTrust); Retargeting 1 (usually detected as Retargeting: RTB House); Security 1 (Amazon Web Services). Each company that appears controlled by another organization is counted once, under the main category of the technologies detected from it on this homepage or, when none was, the category recorded from the company's own page (marked reviewed) or else the one it is usually detected as on other published homepages (marked as such); unclassified: none of these. ### Third parties (16) - The Trade Desk, Inc.: 18 requests to adsrvr.org; theTradeDesk - Google Cloud: 14 requests to doubleclick.net, google.com, googletagmanager.com; Google Analytics, Google Publisher Tag, Google Tag Manager - Criteo: 10 requests to criteo.com, criteo.net - Amazon Web Services: 7 requests to awswaf.com; AWS WAF Bot Control - OneTrust: 7 requests to cookielaw.org, onetrust.com; OneTrust - Microsoft: 6 requests to bing.com; Microsoft Advertising - ID5 Technology Ltd: 5 requests to id5-sync.com, eu-1-id5-sync.com; ID5 - Amazon: 4 requests to amazon-adsystem.com; Amazon Advertising - BidSwitch GmbH: 4 requests to bidswitch.net - Index Exchange Inc.: 4 requests to casalemedia.com - RTB House: 3 requests to creativecdn.com - Xandr: 3 requests to adnxs.com - LY Corporation: 2 requests to yahoo.co.jp, yimg.jp; Yahoo! JAPAN Ads - PubMatic: 2 requests to pubmatic.com - Reddit, Inc.: 2 requests to reddit.com, redditstatic.com; Reddit Ads - Magnite, Inc.: 1 request to rubiconproject.com ### Unknown (2) Domains not identified yet: flvcdn.net, slim02.jp ### First party (1) - booking.com: 259 requests to bstatic.com, booking.com; Amazon CloudFront, Amazon Web Services, Booking.com, Booking.com widget, Criteo, HSTS, Nginx, Open Graph, PubSubJS 8 tracked companies loaded by the homepage are not in booking.com's subprocessor list. A website can use a service without it processing customer data. ## Subprocessor of (0) No tracked vendor lists it. ## Security contact From its security.txt (https://www.booking.com/.well-known/security.txt) ([evidence](https://thirdpartyindex.com/evidence/122043)): - Contact: https://hackerone.com/bookingcom - Contact: mailto:appsecurity@booking.com - Languages: en - Valid until 2027-09-30 --- Third Party Index (https://thirdpartyindex.com) monitors vendors' public security and privacy documents and keeps each version as evidence. Data CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/); vendors' own documents are theirs. API: https://thirdpartyindex.com/api