{"id":10160,"date":"2025-09-18T09:23:21","date_gmt":"2025-09-18T08:23:21","guid":{"rendered":"https:\/\/lawwwing.com\/?p=10160"},"modified":"2025-09-25T16:21:21","modified_gmt":"2025-09-25T15:21:21","slug":"blog-in-2026-your-sms-may-not-be-delivered-the-mandatory-alias-registry-is-introduced","status":"publish","type":"post","link":"https:\/\/lawwwing.com\/en\/blog-in-2026-your-sms-may-not-be-delivered-the-mandatory-alias-registry-is-introduced\/","title":{"rendered":"In 2026, your SMS may not be delivered: the mandatory Alias Registry is introduced"},"content":{"rendered":"\n<p>It\u2019s probably happened to you: you receive an SMS from \u201cCorreos\u201d warning you about an urgent problem and asking you to click a link. Is it real or a scam attempt? Until now, it was hard to know, because anyone could use an alias as the sender. Starting in 2026, this will change: aliases must be registered in an official registry, and operators will block those that don\u2019t comply. Some of these measures are already in place, as we explained in this <a href=\"https:\/\/lawwwing.com\/en\/blog-goodbye-to-phone-spam-spain-bans-commercial-calls-from-mobile-phones\/\" data-type=\"link\" data-id=\"https:\/\/lawwwing.com\/en\/blog-goodbye-to-phone-spam-spain-bans-commercial-calls-from-mobile-phones\/\">article about the ban on commercial calls from mobile phones.<\/a><\/p>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">What is an alias, and what will happen starting in 2026?<\/h4>\n\n\n\n<p><\/p>\n\n\n\n<p>An alias is the name that appears as the sender instead of a number (\u201cCorreos,\u201d \u201cYourShop,\u201d \u201cMyBank\u201d). It helps you quickly identify the company or organization contacting you, but it has also become the perfect disguise for scammers.<\/p>\n\n\n\n<p>The regulation introduces a verification system built on four pillars:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mandatory registration.<\/strong> Only aliases registered in a database managed by the CNMC may be used.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Authorized routes.<\/strong> Each alias will be linked to authorized messaging providers; only messages sent through these routes will be delivered.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Mandatory blocking from June 7, 2026<\/strong>\n<ul class=\"wp-block-list\">\n<li>Unregistered alias \u2192 blocked (not delivered)<\/li>\n\n\n\n<li>Registered alias sent through an unauthorized route \u2192 blocked (prevents third parties from \u201cpiggybacking\u201d on a legitimate name)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Extension to international traffic.<\/strong> SMS entering from abroad using Spanish numbering are already filtered; starting in June 2026, the filter will also apply to aliases: if a message comes in with a Spanish alias that is not registered or sent via an authorized channel, it will be rejected (unless it is legitimate roaming).<\/li>\n<\/ul>\n\n\n\n<p>In other words: if your inbox shows \u201cCorreos,\u201d it will truly be Correos, and the message will have traveled through an authorized channel.<\/p>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Who does this change affect?<\/h4>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Businesses and public administrations:<\/strong> If they use aliases as senders, they will have to register them and ensure they are sent through an authorized provider. Otherwise, their messages won\u2019t be delivered.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Users:<\/strong> They will gain greater security: smishing will lose ground because fake SMS with aliases won\u2019t make it through the filter.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">What steps should you follow if you use aliases to send your SMS?<\/h4>\n\n\n\n<p><\/p>\n\n\n\n<p>The CNMC is currently designing the registry and has opened a public consultation (until September 30, 2025) to gather input from companies, operators, and other stakeholders in the sector.<\/p>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">What you can already do (2025)<\/h3>\n\n\n\n<p><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Review the aliases you use.<\/strong> Identify the alphanumeric aliases your organization uses to send messages.<\/li>\n\n\n\n<li><strong>Talk to your messaging provider.<\/strong> Make sure they will be able to appear as an authorized provider for those aliases in the registry.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">What you will need to do once the registry is operational (May 15, 2026).<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Register the aliases with the CNMC.<\/strong> Enter them into the registry, prove ownership of your brand or trade name, and link them to the provider you use.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Keep everything up to date.<\/strong> Any change of provider or trade name must be reflected in the registry; otherwise, the alias will be blocked.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Don\u2019t leave it until the last minute.<\/strong> Once the filter comes into effect, an unregistered alias will mean a blocked SMS.<\/li>\n<\/ul>\n\n\n\n<div style=\"height:27px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">Conclusion<\/h4>\n\n\n\n<p><\/p>\n\n\n\n<p>SMS remains a useful channel, but it has long been marked by distrust. Starting in 2026, it will be subject to a strict filter: if the alias isn\u2019t registered, the message won\u2019t be delivered. For companies, this means properly managing their aliases and accepting that non-compliance may lead to fines of up to 2 million euros. For users, it\u2019s good news: at last, we\u2019ll be able to read an SMS from \u201cCorreos\u201d without wondering whether there\u2019s someone trustworthy behind it.<\/p>\n\n\n\n<p><a href=\"https:\/\/lawwwing.com\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">Discover how Lawwwing can help you today.<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Message spoofing fraud has continued to grow. To stop it, Order TDF\/149\/2025 requires that all aliases be registered and sent only through verified routes.<\/p>\n<p>On March 7, 2025, Order TDF\/149\/2025 came into force, regulating commercial calls and messaging services. Some of its measures are already in effect, but its most innovative feature will arrive in 2026: the SMS Alias Registry for commercial messages.<\/p>\n","protected":false},"author":9,"featured_media":10169,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"categories":[526,617,462,624,239,619],"tags":[],"class_list":["post-10160","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advertising","category-consumers","category-cybersecurity","category-digital-marketing-2","category-marketing-digital-en","category-regulations"],"acf":[],"_links":{"self":[{"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/posts\/10160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/comments?post=10160"}],"version-history":[{"count":3,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/posts\/10160\/revisions"}],"predecessor-version":[{"id":10225,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/posts\/10160\/revisions\/10225"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/media\/10169"}],"wp:attachment":[{"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/media?parent=10160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/categories?post=10160"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lawwwing.com\/en\/wp-json\/wp\/v2\/tags?post=10160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}