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Ministerio para la Transformación Digital y de la Función Pública

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Situations

[ACTIVE] [TECHNOLOGY] [ES]

Spain implements 400 prefix for commercial calls

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Latest: Spain implements new telephone numbering regulations

Spain has officially implemented a new telecommunications regulation requiring all commercial sales calls to use a specific nine-digit prefix starting with 400. Effective as of October 17, 2026, this measure—proposed by

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