Ancestry.com Cookie Table



We use different types of cookies to collect and use data as part of our services.

We use two types of cookies: persistent cookies and session cookies. A persistent cookie lasts beyond the current session and will stay on your browser until they expire or you delete them. Session cookies last only as long as the session (usually the current visit to a site or a browser session). Third parties, such as our partners and service providers may also use cookies in connection with our Services. Please take a look at our Cookie Policy and our Privacy Statement if you’d like more information on how and why we and third parties use cookies.

These tables list some of the cookies that we and third parties place on our sites. The table also provides information about the cookies that third parties may use to help us to provide our Services.

Since the number and names of cookies may change, these tables may be updated from time to time to provide you with the latest information. The expiration dates for the cookies listed below generally apply on a rolling basis.

Necessary (including security / fraud prevention / authentication / no opt-out available)

We use these cookies to ensure we can provide the Services, including to ensure the safety and security of our users, recognize you when you visit our services, remember your preferences, and to enable our services to function. The use of these technologies cannot be removed or turned off.

Cookie Name Description Classification Expiration
user_token Used for authentication of user and login. First Party 30 days
promotion_token Used to grant access to content during a promotion. First Party 5 minutes - 7 days
pqd Used for authentication of ProQuest user. First Party 1 year
pqu Used for re-authentication of ProQuest user. First Party Session
3PAAuth Used for authentication of Publisher user. First Party 1 day
accesscheck Used for product authentication. First Party 1 day
institution Used for authentication of institution user. First Party Session
fn_from_archives Used for authorization if a user came from archives.com First Party Session
regfields Used for security on forms. First Party Session

Preference (visual settings will be disabled / opt-out available)

Cookie Name Description Classification Expiration
viewer-fromlocation Used to determine best invitation experience. First Party Session
ab-test-xxxxxxxxxx Used to make split tests First Party 1 month
ncom-subscription Used to store subscription status First Party 5 minutes
lastXid Used to store last offer id. Offers may include discounts. First Party 14 days
lastIid Used to store last internal id encountered. First Party 14 days
lastSid Used to store last source id encountered. First Party 14 days
lastSiloId Used to store last product visited. First Party Session
cj_affiliate_id Used to credit affiliate for sales First Party 120 days
cjevent Used to credit affiliate for sales First Party 120 days
previouspage Used to return the user where they left off. First Party Session
hideexpires Used to hide an expiration banner. First Party Session
hidediscontinued Used to hide a discontinued product banner. First Party Session
hideverify Used to hide a verify email banner. First Party Session
a Used to store an activity action. First Party Session
docId Used to store the last image id viewed. First Party Session
fndata Used to store user account information. First Party Session
reload-silo-fndata Used to force a fndata cookie refresh. First Party Session
lastfreetrial Used to store last free trial end date. First Party Session
institutionname Used to store the name of the visiting institution. First Party Session
user_data Used to store username and email confirmation status. First Party Session
is_pq Stores the value of a products ProQuest status. First Party Session

Advertising (opt-out available)

Cookie Name Description Classification Expiration
GoogleAdServingTest Used to determine what ads have been shown to the user. First Party Session
__gads Used to log served advertisements. First Party 1 year
_dlt Used to obtain visitor data for statistical and targeting purposes. First Party Session
__qca Used to collect anonymous data on the user's site visits for reporting purposes. First Party 1 year
awxxxx Used to track marketing campaigns and the user’s site journey. First Party 3 years
_pubcid Used to optimize the site and make advertisements more relevant for the user. First Party 5 years/Persistent
_adb Used to make content and advertisements more relevant for the user. First Party 1 year
adbct Used to make content and advertisements more relevant for the user. First Party 1 day
adbrgn Used to make content and advertisements more relevant for the user. First Party 1 day
adb_adhesion Used to make content and advertisements more relevant for the user. First Party 1 day
adb_ts Used to make content and advertisements more relevant for the user. First Party 1 day
apstagCfg Used for targeted advertising. First Party Session
_awl Used to store visitor response to disable Ad Blocking. First Party 3 years
_admrla Used to make content and advertisements more relevant for the user. First Party 3 years

Analytics (opt-out available)

Cookie Name Description Classification Expiration
_ga Used to generate statistical data on how the user uses the site. First Party 2 year
_gat Used to throttle request rate. First Party 1 day
_gid Used to generate statistical data on how the user uses the site. First Party 1 day
__utma Used to collect data on the user’s site visits. First Party 2 year
__utmb Used to calculate the duration of a user’s site visit. First Party 1 day
__utmc Used to calculate the duration of a user’s site visit. First Party Session
__utmt Used to throttle request rate. First Party 1 day
__utmz Used to collect data on the user’s path to the site. First Party 6 months
_gat_gtag_xxxxxxxxxxxxxxxxxxxxxxxxxxx Used to throttle request rate. First Party 1 minute