What is the utag_main* cookie?
Used by Tealium's iQ Tag Management platform to store session and page-view state for the tags it loads. When the data is too large for one cookie, Tealium splits it into several with suffixes like _ss, _se and _pn.
Our October 2026 scan found it on 63 sites (3% of the 2,450 we scanned), set before any consent.
- Purpose
- Functional
- Belongs to
- Tealium
- Set as
- First-party (under the site's own domain)
- Typical lifetime
- 12 months
- Name
- A family of cookies: the part after utag_main varies by site or account.
Sites that set utag_main* before consent
The highest-ranked 30 of 63 sites.
- f5.com1 tracking company
- intuit.com1 tracking company
- webex.com4 tracking companies
- telekom.net2 tracking companies
- oracle.com2 tracking companies
- cisco.com2 tracking companies
- ibm.com2 tracking companies
- avast.com5 tracking companies
- opendns.com2 tracking companies
- huawei.com2 tracking companies
Show 20 more sites
- intel.com1 tracking company
- mcafee.com0 tracking companies
- trendmicro.com8 tracking companies
- uber.com1 tracking company
- bild.de0 tracking companies
- welt.de0 tracking companies
- focus.de1 tracking company
- mayoclinic.org3 tracking companies
- bankofamerica.com3 tracking companies
- elmundo.es20 tracking companies
- orange.fr1 tracking company
- garmin.com2 tracking companies
- marca.com9 tracking companies
- nsone.net1 tracking company
- usnews.com4 tracking companies
- avira.com5 tracking companies
- logitech.com1 tracking company
- thousandeyes.com2 tracking companies
- constantcontact.com3 tracking companies
- politico.com31 tracking companies
Related cookies
Other cookies from Tealium.
- TAPID8 sites
How to stop it
Declining non-essential cookies in a site's consent banner should stop utag_main* 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.