Numbers with prefix 821 in Spain
In Spain's numbering plan, 821 identifies telefonía fija pública y servicios nómadas con asignación geográfica compartida in the official Segovia area. Its cost follows the stated cost class; the digits alone do not identify the caller.
Search a number with prefix 821
Search a phone number or a company name (Iberdrola, Movistar and Vodafone...) to check if it has been reported as spam.
No numbers reported with prefix 821
We do not have public reports for this prefix yet. Try searching a full number or submit a report if you just received a suspicious call.
About numbers 821
Numbers starting with 821 may include toll-free (800) or premium-rate (803, 806, 807) services. Be careful with premium-rate numbers — calling back can be expensive.
Official source and review
Secretaría de Estado de Telecomunicaciones e Infraestructuras Digitales · Document: 2021-02-18 · Reviewed: 2026-08-09
A prefix describes an official allocation. Portability and caller-ID spoofing mean it cannot identify the caller on its own.