Prefix 623 — page 23
Mobile
En el plan español, 6 identifica servicios móviles compartidos por varios operadores; el coste depende de la clase indicada y no del aspecto aislado del número.
Search a number with prefix 623
Search a phone number or a company name (Iberdrola, Movistar and Vodafone...) to check if it has been reported as spam.
Numbers reported with prefix 623
1,103 numbersAbout numbers 623
Numbers starting with 623 are mobile lines in Spain. They are the most common source of unwanted sales calls and telemarketing. If you do not recognise a caller on this prefix, search it on NoCall before calling back.
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.