FCC & Compliance
The four-character identifier assigned to a telecommunications carrier, used across number administration, routing, and STIR/SHAKEN eligibility.
OCNs are administered by NECA and identify the operating entity behind number blocks and interconnection arrangements. Number portability, LERG records, and access billing all key on the OCN.
Holding an OCN is one of the prerequisites the STI-PA checks before granting the token needed to obtain signing certificates.
Without an OCN you cannot obtain your own signing certificate and must rely on an upstream partner to sign your traffic, which limits the attestation you can achieve.
The central authority that decides which providers are eligible to obtain STIR/SHAKEN signing certificates and issues the tokens needed to request them.
The routing number that identifies the switch actually serving a telephone number after number portability, used to route ported calls correctly.
The FCC-mandated framework that cryptographically signs calling numbers so terminating carriers can verify the caller ID was not spoofed.
SipShield scores live SIP traffic with patented AI so the controls behind this term run automatically — and leave the audit trail regulators expect.