{"id":101381,"date":"2026-04-27T13:22:39","date_gmt":"2026-04-27T11:22:39","guid":{"rendered":"https:\/\/www.viafirma.com\/?post_type=faq&#038;p=101381"},"modified":"2026-05-19T11:44:20","modified_gmt":"2026-05-19T09:44:20","slug":"access-to-the-cnmc-portal-and-authentication","status":"publish","type":"faq","link":"https:\/\/www.viafirma.com\/en\/faqs\/access-to-the-cnmc-portal-and-authentication\/","title":{"rendered":"Access to the CNMC portal and authentication"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">To start the process, access the portal: <\/span><b>Electronic Office \u2013 <a href=\"https:\/\/sede.cnmc.gob.es\/tramites\/telecomunicaciones\/gestion-del-registro-de-alias\" target=\"_blank\" rel=\"noopener\">CNMC Alias Registry Management<\/a><\/b><\/p>\n<p><span style=\"font-weight: 400;\">Select access with <\/span><b>cl@ve<\/b><span style=\"font-weight: 400;\"> or with an <\/span><b>electronic certificate<\/b><span style=\"font-weight: 400;\">, as applicable:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"> Spanish companies must use a valid Spanish digital certificate.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Foreign companies in eIDAS countries may use their compatible local digital certificates.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Foreign companies without an eIDAS certificate will need to obtain a Spanish tax identification number (NIF) beginning with the letter N, for foreign companies, and subsequently obtain a Spanish digital certificate in order to complete the registration.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Once authenticated, the system will automatically identify you and you will be able to start a new registration.<\/span><\/p>\n<p><br style=\"font-weight: 400;\" \/><br style=\"font-weight: 400;\" 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