The Comisión Nacional de los Mercados y la Competencia (CNMC) has imposed a fine of 450,000 euros on Aire Networks del Mediterráneo for violating the conditions for the assignment and use of the telephone numbering that it had been awarded, as set out in the resolution of the body.
The document from the Regulatory Supervision Chamber, dated October 22, 2026, and to which Europa Press has had access, concludes that the operator committed a serious infringement of the General Telecommunications Law between July 7, 2022 and December 31, 2025.
As the CNMC details in the sanctioning file, the action was initiated following the complaint filed by an individual in October 2024, after receiving an unsolicited commercial call from a mobile number of Aire Networks. That episode, which the affected person brought to the attention of the Guardia Civil, later led to an unauthorized number portability and a banking scam.
In its resolution, the regulator considers it proven that Aire Networks did not supervise the use of 6,923 mobile numbers that it had made available to the company Leaddesk through 76 contracts signed between July 2022 and November 30, 2025.
The CNMC states that Leaddesk resold those numbers to other clients, such as call centers, to make communications over the internet from cloud platforms, a use classified as nomadic voice, different from conventional mobile service, and without associating SIM cards with all lines.
In addition, the competition body considers it proven that Aire Networks transferred throughout 2025 a total of 1,893 numbers to other 118 operators without having the required administrative authorization or despite the fact that its transfer was expressly prohibited.
In particular, it involved geographic fixed numbering, special tariff services (prefixes 800, 900, 901 and 902) and additional billing numbering, that is, numbers with an extra charge for the user.
The regulator explains in its brief that it reduced the final amount of the sanction with respect to the 500,000 euros initially contemplated in the resolution proposal, after verifying that the company regularized in August 2026 the situation of the fixed and special numbers that were still pending, which is added as a mitigating factor to the cessation already assessed previously in relation to the mobile lines.
The precise resolution, lastly, that once the administrative channel has been exhausted, the operator has the possibility of filing an administrative-contentious appeal before the National Court within a period of two months from the day following its notification.