Madrid area codes
Under Spain's national numbering plan, the area codes of Madrid are 91, 810, 815.
Madrid prefixes
What a provincial prefix tells you
The prefix tells you which plan area the number belongs to. It does not identify the caller on its own: numbers can be ported between operators and caller ID can be spoofed. Search the full number to see what other users have reported.
Official source
Secretaría de Estado de Telecomunicaciones e Infraestructuras Digitales · Listado de atribuciones y adjudicaciones vigentes del Plan Nacional de Numeración Telefónica · Document: 2021-02-18 · Reviewed: 2026-08-09
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