What is the BIGipServer* cookie?
Used by the f5 BIG-IP load balancer to ensure one user's request is always handled by the same server to maintain a consistent user experience.
Our October 2026 scan found it on 41 sites (2% of the 2,450 we scanned), set before any consent.
- Purpose
- Functional
- Belongs to
- f5 BIG-IP
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- Session (vendor says: Unknown)
- Name
- A family of cookies: the part after BIGipServer varies by site or account.
Sites that set BIGipServer* before consent
The highest-ranked 30 of 41 sites.
- datadoghq.com14 tracking companies
- launchdarkly.com3 tracking companies
- nintendo.com0 tracking companies
- linode.com1 tracking company
- iso.org2 tracking companies
- webmd.com2 tracking companies
- medallia.com1 tracking company
- proofpoint.com3 tracking companies
- itu.int4 tracking companies
- constantcontact.com3 tracking companies
Show 20 more sites
- purdue.edu19 tracking companies
- msu.edu10 tracking companies
- bazaarvoice.com3 tracking companies
- adp.com6 tracking companies
- northwestern.edu1 tracking company
- tenable.com3 tracking companies
- harman.com1 tracking company
- zscaler.com1 tracking company
- utah.edu11 tracking companies
- sueddeutsche.de5 tracking companies
- allstate.com2 tracking companies
- univie.ac.at0 tracking companies
- telenet.be2 tracking companies
- watchguard.com1 tracking company
- n-able.com5 tracking companies
- cvent.com5 tracking companies
- iterable.com4 tracking companies
- rochester.edu11 tracking companies
- telenor.se1 tracking company
- konghq.com6 tracking companies
How to stop it
Declining non-essential cookies in a site's consent banner should stop BIGipServer* 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 from the Open Cookie Database (Apache 2.0).
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.