"Do Not Call" Flags on Contacts

Three Independent DNC Signals

A contact record carries three independent do-not-call
signals. They are not interchangeable and are enforced at
different points in the pipeline.

Blocked

The blocked flag is the company-wide blacklist flag
described in the Blacklist vs Suppression List article.
It is set by user action or import and enforces a hard
block for one company.

DNC Global

The global DNC flag marks a contact as registered on the
federal Do Not Call registry or equivalent national DNC
list. The flag is populated through DNC lookup integrations
and consulted when any of several DNC-sensitive operations
fire: inbound calls on offers with block-inbound-callers-
on-DNC enabled, outbound dials from schedules with DNC
checking enabled, scheduled callbacks, text messages on
DNC-gated schedules, and lead suppression checks. The
lookup result is cached for 5 minutes per number to avoid
repeated lookups.

DNC Litigators

The litigators flag marks numbers known to belong to Integrations with TCPA
litigators. The list is stored globally and consulted
during call routing. The result is cached for five minutes
per number.

SMS Opt Out

Separately from DNC, a contact tracks SMS opt-out.
When a consumer replies STOP to a message, the system
records an opt-out log entry, sets the opt-out flag and
timestamp, and then iterates every lead in the company
sharing that number to keep the per-lead state in sync.
A later opt-in (START) reverses the state through the same
fan-out process.