Service OS

FRN 0033555251 · Voice Service Provider · Bulgaria

Filing statusCertificationStatus dateForeign provider
Active Complete STIR/SHAKEN Implementation 2023-03-20 Yes

For carriers routing this provider

This filing currently appears in the database, so accepting traffic directly from this provider is permitted under 47 CFR § 64.6305(g). Filings can change status at any time — removals have historically given downstream carriers about two business days to react.

Change history

No changes detected since monitoring began.

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Status last verified against the public register 2026-08-19T19:55 UTC. Route traffic to or from this provider? Add them to a monitored roster — you'll know within hours if this page changes, with the FCC citation attached.