Numbering assigned to Atento Teleservicios España
According to the CNMC numbering register, Atento Teleservicios España holds 2 assigned blocks with 20,000 numbers under 2 prefixes. 20,000 of them are landline numbers.
AT
Holder in the register: ATENTO TELESERVICIOS ESPAÑA, S.A. UNIPERSONAL.
Landline prefixes
An assigned block shows which operator the CNMC gave that numbering to. Because of number portability, a given number may now be with another operator, and a prefix does not identify the caller on its own.
Source
Comisión Nacional de los Mercados y la Competencia (CNMC) · Registro de numeración: bloques de numeración asignados (bd-num) · Data imported on 2 Jul 2026