Segment

Analytics

Customer data platform that fans events out to downstream tools.

How to block it until consent

Segment itself is a router; what it forwards (GA, Mixpanel, ad pixels) determines the consent category. Block analytics.js entirely until consent or use Segment's Consent Manager. Sets ajs_anonymous_id and ajs_user_id cookies.

Detection signals

Host domains

segment.io
cdn.segment.com
api.segment.io

Cookies set

ajs_anonymous_id
ajs_user_id
ajs_group_id

Request patterns

/analytics.js
/v1/p
/v1/t
/v1/i

Categorisation follows common EU/DPC guidance. Your specific deployment may change the category (e.g. Stripe on a checkout page vs. a marketing page).