What is the domain_sid cookie?
We don't have a vendor description for this cookie yet, but our scan shows it's set under the sites' own domains rather than by a third party, and it typically lasts 7 days. It's listed as unclassified.
Our October 2026 scan found it on 44 sites (2% of the 2,450 we scanned), set before any consent.
- Purpose
- Unclassified
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 7 days
- Where it's common
- 89% of the sites that set it use a .ru domain.
Sites that set domain_sid before consent
The highest-ranked 30 of 44 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
- megafon.ru5 tracking companies
- rustore.ru2 tracking companies
Show 20 more sites
- litnet.com9 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
- firstvds.ru2 tracking companies
How to stop it
Declining non-essential cookies in a site's consent banner should stop domain_sid 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.
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.