What is the __obref 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 12 months. It's listed as unclassified.
Our October 2026 scan found it on 32 sites (1% of the 2,450 we scanned), set before any consent.
- Purpose
- Unclassified
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 12 months
Sites that set __obref before consent
The highest-ranked 30 of 32 sites.
- eventbrite.com2 tracking companies
- curseforge.com9 tracking companies
- hotpepper.jp13 tracking companies
- jalan.net27 tracking companies
- carsensor.net31 tracking companies
- wordwall.net4 tracking companies
- mechacomic.jp13 tracking companies
- piccoma.com25 tracking companies
- alphapolis.co.jp9 tracking companies
- hostinger.com4 tracking companies
Show 20 more sites
- earthlink.net10 tracking companies
- revenuecat.com3 tracking companies
- primis.tech11 tracking companies
- yotpo.com4 tracking companies
- laravel.com7 tracking companies
- simpli.fi2 tracking companies
- suno.com9 tracking companies
- simplisafe.com31 tracking companies
- ventraip.net.au8 tracking companies
- libsyn.com8 tracking companies
- brevo.com10 tracking companies
- xero.com18 tracking companies
- alchemer.com13 tracking companies
- eventbrite.co.uk2 tracking companies
- value-domain.com8 tracking companies
- tufts.edu12 tracking companies
- island.io17 tracking companies
- rochester.edu11 tracking companies
- poshmark.com9 tracking companies
- bitdrift.io6 tracking companies
How to stop it
Declining non-essential cookies in a site's consent banner should stop __obref 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.