cityam.com
Heavy tracking seen
5/100
- The banner’s alternative to accepting was a paid option: “Reject & Pay £4”
- 4 tracking companies were seen loading before any choice was made
- The banner asked visitors to accept 952 ad-industry “partners”
- 36 cross-site tracking companies were seen after accepting
- Device-fingerprinting techniques seen (audio, canvas, webgl)
Where the data went
From our checker in London to 25 tracker server locations in 9 countries. Drag to spin.
- Advertising
- Data broker
- Analytics
- Social
- Our checker (London)
Server locations
Tap one to find it on the globe
Companies
Who showed up
- 01AAmazon AdsAd network · Seattle · servers in London, DusseldorfAdvertisingBeforeAfter accept
- 02EEzoicPublisher ad platform · Carlsbad · servers in Montreal, ParisAdvertisingBeforeAfter accept
- 03GGoogleAd network, analytics and search · Mountain View · servers in Dublin, Palo AltoAdvertisingBeforeAfter accept
- 04LLotameData platform (data broker) · Columbia, MD · servers in Frankfurt am Main, DublinData brokerBeforeAfter accept
- 05PParse.lyAudience analytics · San Francisco · servers in Concord, DublinAnalyticsBeforeAfter accept
- 06333AcrossAd exchange and identity · New York · servers in New YorkAdvertisingBeforeAfter accept
- 0766senseB2B intent data · San Francisco · servers in Seattle (South Lake Union)Data brokerBeforeAfter accept
- 08AAdformAd platform · Copenhagen · servers in CopenhagenAdvertisingBeforeAfter accept
- 09AAdobeMarketing analytics and ad platform · San Jose · servers in Kansas City, Frankfurt am MainData brokerBeforeAfter accept
- 10CCriteoRetargeting ad network · Paris · servers in Paris, GroningenAdvertisingBeforeAfter accept
- 11EEpsilonMarketing data (data broker) · Irving, TX · servers in Frankfurt am MainData brokerBeforeAfter accept
- 12EEquativAd exchange · Paris · servers in Amsterdam, Palo AltoAdvertisingBeforeAfter accept
- 13EExperianCredit bureau and identity data · Dublin · servers in Kansas CityData brokerBeforeAfter accept
- 14GGumGumContextual ads · Santa Monica · servers in DublinAdvertisingBeforeAfter accept
- 15IID5Shared ad identity · London · servers in Montreal, RoubaixData brokerBeforeAfter accept
- 16IIndex ExchangeAd exchange · Toronto · servers in Toronto (Old Toronto)AdvertisingBeforeAfter accept
- 17IInMobiMobile ads · Bengaluru · servers in AshburnAdvertisingBeforeAfter accept
- 18IIntegral Ad ScienceAd verification · New York · servers in Dublin, Seattle (South Lake Union)AdvertisingBeforeAfter accept
- 19KKargoMobile ads · New York · servers in Frankfurt am MainAdvertisingBeforeAfter accept
- 20LLinkedInProfessional network and ad platform · Sunnyvale · servers in LondonAdvertisingBeforeAfter accept
- 21LLiveRampIdentity graph (data broker) · San Francisco · servers in Kansas City, Seattle (South Lake Union)Data brokerBeforeAfter accept
- 22MMagniteAd exchange · Los Angeles · servers in Boston, AmsterdamAdvertisingBeforeAfter accept
- 23MMedia.netContextual ads · Dubai · servers in Kansas City, MinneapolisAdvertisingBeforeAfter accept
- 24MMicrosoftAd network and analytics · Redmond · servers in Doylestown, LondonAdvertisingBeforeAfter accept
- 25NNexxenVideo ads · London · servers in CardiffAdvertisingBeforeAfter accept
- 26OOpenXAd exchange · Pasadena · servers in Kansas CityAdvertisingBeforeAfter accept
- 27PPubMaticAd exchange · Redwood City · servers in Singapore, Palo AltoAdvertisingBeforeAfter accept
- 28QQuantcastAudience data and ads · San Francisco · servers in Ashburn, Seattle (South Lake Union)AdvertisingBeforeAfter accept
- 29RRTB HouseRetargeting ad network · Warsaw · servers in Kansas City, AmsterdamAdvertisingBeforeAfter accept
- 30SSeedtagContextual ads · Madrid · servers in Kansas CityAdvertisingBeforeAfter accept
- 31SShareThisShare buttons and audience data · Palo Alto · servers in DublinSocialBeforeAfter accept
- 32SSovrnAd exchange · Boulder · servers in Dublin, AshburnAdvertisingBeforeAfter accept
- 33TTeadsContent recommendation and video ads · New York · servers in Frankfurt am Main, ChicagoAdvertisingBeforeAfter accept
- 34TThe Trade DeskAd buying platform and identity (UID2) · Ventura · servers in Seattle (South Lake Union), Toronto (Old Toronto)AdvertisingBeforeAfter accept
- 35TTransUnionCredit bureau and identity data · Chicago · servers in LondonData brokerBeforeAfter accept
- 36TTripleLiftAd exchange · New York · servers in Frankfurt am MainAdvertisingBeforeAfter accept
- 37YYahooAd network · New York · servers in Seattle (South Lake Union), LondonAdvertisingBeforeAfter accept
From our last check on 24 Oct 2026 from London: homepage only, three fresh visits (did nothing, clicked reject, clicked accept). Server locations are approximate, from the IP addresses we connected to. Some requests after rejecting may be strictly necessary services; this is what we observed, not proof that the site broke the law. How we check · Run this site? Ask for a re-check or add a statement
See this live on every site you visit
Browser Monster shows who’s watching on every page, what you agreed to, and helps you clear it up. It works on your device and never sells your data.
Join the waitlistCheck another site