What is the tmr_detect cookie?
Used by the Top.Mail.Ru counter script to detect whether the visitor has already been counted in the current session.
Our October 2026 scan found it on 43 sites (2% of the 2,450 we scanned), set before any consent.
- Purpose
- Analytics
- Belongs to
- Mail.ru (VK)
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 1 day
- Where it's common
- 91% of the sites that set it use a .ru domain.
Sites that set tmr_detect before consent
The highest-ranked 30 of 43 sites.
- dzen.ru3 tracking companies
- mts.ru3 tracking companies
- vk.ru2 tracking companies
- ok.ru6 tracking companies
- ivi.ru10 tracking companies
- bitrix24.ru3 tracking companies
- cdnvideo.ru2 tracking companies
- livejournal.com11 tracking companies
- tbank.ru4 tracking companies
- megafon.ru5 tracking companies
Show 20 more sites
- rustore.ru2 tracking companies
- max.ru2 tracking companies
- moe.video3 tracking companies
- amocrm.ru6 tracking companies
- sweb.ru2 tracking companies
- beget.com5 tracking companies
- sprinthost.ru5 tracking companies
- russianfood.com6 tracking companies
- mindbox.ru6 tracking companies
- hh.ru5 tracking companies
- vtb.ru4 tracking companies
- vkvideo.ru4 tracking companies
- magnit.ru6 tracking companies
- ria.ru4 tracking companies
- mos.ru2 tracking companies
- 2gis.ru5 tracking companies
- tutu.ru5 tracking companies
- apptracer.ru1 tracking company
- profi.ru4 tracking companies
- lenta.ru9 tracking companies
Related cookies
Other cookies from Mail.ru (VK).
- PVID49 sites
- tmr_lvid46 sites
- tmr_lvidTS46 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop tmr_detect being set on later visits. Blocking third-party cookies in your browser settings stops the third-party kind everywhere, and clearing cookies for a site removes any it already set.
Description written by CookieTosser, for a cookie the Open Cookie Database doesn't cover.
Understanding this page
- How cookie lifetimes work, and why a 13-month _ga matters
What a cookie's "expires" field actually controls, why Google Analytics ships a 2-year default that many sites cut down to 13 months, and how Safari's 7-day cap on script-set cookies changes the picture.
- First-party vs third-party cookies (and why "first-party" still tracks you)
What the distinction actually means technically, why browsers only block one of the two, and how CNAME cloaking, server-side tagging and cookies like _ga let sites keep tracking under their own domain.
- How to block or limit trackers
Browser privacy settings, content blockers, Global Privacy Control and clearing cookies compared honestly — what each one actually stops, what it doesn't, and what it costs you in return.