{"id":7800,"date":"2026-03-20T10:31:41","date_gmt":"2026-03-20T10:31:41","guid":{"rendered":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/"},"modified":"2026-05-28T17:20:44","modified_gmt":"2026-05-28T16:20:44","slug":"fs-52-global-title-leasing-code-of-conduct","status":"publish","type":"gsma_theme_resources","link":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/","title":{"rendered":"FS.52 2.0 \u2013 Global Title Leasing Code of Conduct"},"content":{"rendered":"\n<p>This document is a reference document addressing the leasing of Global Titles used within SS7 networks, motivations for this practice, how they are used and a code of conduct to prevent abuse and the introduction of undesirable risks for mobile network operators (MNOs) and their customers. The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This document is a reference document addressing the leasing of Global Titles used within SS7 networks, motivations for this practice, how they are used and a code of conduct to prevent abuse and the introduction of undesirable risks for MNOs&#8230;<\/p>\n","protected":false},"author":39,"featured_media":14359,"template":"","meta":{"image":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png","json":{"gsma_resources_type":"Document","gsma_resources_thumb":"[14359]","gsma_resources_file":"[14133]","gsma_resources_multi":null,"gsma_resources_wgr":null,"gsma_resources_video":"","gsma_resources_image":"[]","gsma_resources_url":"","gsma_resources_date":"","gsma_resources_button":"Download"}},"tags":[],"resource_categories":[1582,1517,1585,1576],"algolia_discover_type":[1553],"class_list":["post-7800","gsma_theme_resources","type-gsma_theme_resources","status-publish","has-post-thumbnail","hentry","resource_categories-mobile-cybersecurity-knowledge-base","resource_categories-publications","resource_categories-supply-chain-toolbox","resource_categories-technical-guidelines","algolia_discover_type-resource"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.3 (Yoast SEO v24.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>FS.52 2.0 \u2013 Global Title Leasing Code of Conduct - Security<\/title>\n<meta name=\"description\" content=\"The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"FS.52 2.0 \u2013 Global Title Leasing Code of Conduct - Security\" \/>\n<meta property=\"og:description\" content=\"The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/\" \/>\n<meta property=\"og:site_name\" content=\"Security\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-28T16:20:44+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png\" \/>\n\t<meta property=\"og:image:width\" content=\"619\" \/>\n\t<meta property=\"og:image:height\" content=\"634\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"FS.52 2.0 \u2013 Global Title Leasing Code of Conduct - Security","description":"The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/","og_locale":"en_GB","og_type":"article","og_title":"FS.52 2.0 \u2013 Global Title Leasing Code of Conduct - Security","og_description":"The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.","og_url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/","og_site_name":"Security","article_modified_time":"2026-05-28T16:20:44+00:00","og_image":[{"width":619,"height":634,"url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/","url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/","name":"FS.52 2.0 \u2013 Global Title Leasing Code of Conduct - Security","isPartOf":{"@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/#primaryimage"},"image":{"@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/#primaryimage"},"thumbnailUrl":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png","datePublished":"2026-03-20T10:31:41+00:00","dateModified":"2026-05-28T16:20:44+00:00","description":"The focus of this document is on addressing the security and privacy risks associated with this practice with the goal of delivering transparency, traceability and accountability.","inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/gsma_resources\/fs-52-global-title-leasing-code-of-conduct\/#primaryimage","url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png","contentUrl":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-content\/uploads\/2026\/03\/GT-leasing-thumbnail.png","width":619,"height":634,"caption":"Cover page of the GSMA Address Leasing Code of Conduct Version 2.0, dated 16 December 2025, with notices."},{"@type":"WebSite","@id":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/#website","url":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/","name":"Security","description":"GSMA Security","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"}]}},"cats":[{"term_id":1591,"name":"Airtel","slug":"airtel","term_group":0,"term_taxonomy_id":1591,"taxonomy":"resource_categories","description":"","parent":1590,"count":0,"filter":"raw"},{"term_id":1600,"name":"APAC","slug":"apac","term_group":0,"term_taxonomy_id":1600,"taxonomy":"resource_categories","description":"","parent":1599,"count":0,"filter":"raw"},{"term_id":1598,"name":"Branded Calling","slug":"branded-calling","term_group":0,"term_taxonomy_id":1598,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":498,"name":"Build","slug":"build-phase","term_group":0,"term_taxonomy_id":498,"taxonomy":"resource_categories","description":"","parent":507,"count":7,"filter":"raw"},{"term_id":1590,"name":"Company name","slug":"company-name","term_group":0,"term_taxonomy_id":1590,"taxonomy":"resource_categories","description":"","parent":1589,"count":0,"filter":"raw"},{"term_id":499,"name":"Concept","slug":"concept-phase","term_group":0,"term_taxonomy_id":499,"taxonomy":"resource_categories","description":"","parent":507,"count":4,"filter":"raw"},{"term_id":1584,"name":"Coordinated Vulnerability Disclosure","slug":"coordinated-vulnerability-disclosure","term_group":0,"term_taxonomy_id":1584,"taxonomy":"resource_categories","description":"","parent":1576,"count":1,"filter":"raw"},{"term_id":1597,"name":"Customer Education and Awareness Campaigns","slug":"customer-education-and-awareness-campaigns","term_group":0,"term_taxonomy_id":1597,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":200,"name":"cvd","slug":"cvd","term_group":0,"term_taxonomy_id":200,"taxonomy":"resource_categories","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":177,"name":"CVD Programme","slug":"cvd-programme","term_group":0,"term_taxonomy_id":177,"taxonomy":"resource_categories","description":"","parent":0,"count":3,"filter":"raw"},{"term_id":500,"name":"Decommissioning","slug":"decommissioning-phase","term_group":0,"term_taxonomy_id":500,"taxonomy":"resource_categories","description":"","parent":507,"count":3,"filter":"raw"},{"term_id":501,"name":"Delivery","slug":"delivery-phase","term_group":0,"term_taxonomy_id":501,"taxonomy":"resource_categories","description":"","parent":507,"count":3,"filter":"raw"},{"term_id":502,"name":"Deployment","slug":"deployment-phase","term_group":0,"term_taxonomy_id":502,"taxonomy":"resource_categories","description":"","parent":507,"count":8,"filter":"raw"},{"term_id":503,"name":"Design and Development","slug":"design-and-development-phase","term_group":0,"term_taxonomy_id":503,"taxonomy":"resource_categories","description":"","parent":507,"count":9,"filter":"raw"},{"term_id":1556,"name":"M360 APAC","slug":"m360-apac","term_group":0,"term_taxonomy_id":1556,"taxonomy":"resource_categories","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1557,"name":"M360 APAC","slug":"m360-apac-publications","term_group":0,"term_taxonomy_id":1557,"taxonomy":"resource_categories","description":"","parent":1517,"count":0,"filter":"raw"},{"term_id":1518,"name":"m360 Latam 2024","slug":"m360-latam-2024","term_group":0,"term_taxonomy_id":1518,"taxonomy":"resource_categories","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1509,"name":"M360 UK 2023","slug":"m360-uk-2023","term_group":0,"term_taxonomy_id":1509,"taxonomy":"resource_categories","description":"","parent":0,"count":6,"filter":"raw"},{"term_id":1582,"name":"Mobile Cybersecurity Knowledge Base","slug":"mobile-cybersecurity-knowledge-base","term_group":0,"term_taxonomy_id":1582,"taxonomy":"resource_categories","description":"","parent":1576,"count":44,"filter":"raw"},{"term_id":1503,"name":"MWC22 Barcelona","slug":"mwc22-barcelona","term_group":0,"term_taxonomy_id":1503,"taxonomy":"resource_categories","description":"","parent":0,"count":6,"filter":"raw"},{"term_id":1508,"name":"MWC23 Barcelona","slug":"mwc23-barcelona","term_group":0,"term_taxonomy_id":1508,"taxonomy":"resource_categories","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":1511,"name":"MWC23 Las Vegas","slug":"mwc23-las-vegas","term_group":0,"term_taxonomy_id":1511,"taxonomy":"resource_categories","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1516,"name":"MWC24 Barcelona","slug":"mwc24-barcelona","term_group":0,"term_taxonomy_id":1516,"taxonomy":"resource_categories","description":"","parent":0,"count":3,"filter":"raw"},{"term_id":1575,"name":"MWC25 Barcelona","slug":"mwc25-barcelona","term_group":0,"term_taxonomy_id":1575,"taxonomy":"resource_categories","description":"","parent":0,"count":2,"filter":"raw"},{"term_id":322,"name":"NESAS","slug":"nesas","term_group":0,"term_taxonomy_id":322,"taxonomy":"resource_categories","description":"","parent":0,"count":5,"filter":"raw"},{"term_id":504,"name":"Operational","slug":"operational-phase","term_group":0,"term_taxonomy_id":504,"taxonomy":"resource_categories","description":"","parent":507,"count":23,"filter":"raw"},{"term_id":1578,"name":"Post quantum use case library","slug":"post-quantum-use-case-library","term_group":0,"term_taxonomy_id":1578,"taxonomy":"resource_categories","description":"","parent":1522,"count":6,"filter":"raw"},{"term_id":1522,"name":"Post-quantum","slug":"post-quantum","term_group":0,"term_taxonomy_id":1522,"taxonomy":"resource_categories","description":"","parent":0,"count":15,"filter":"raw"},{"term_id":1581,"name":"Post-Quantum Cryptography","slug":"post-quantum-cryptography","term_group":0,"term_taxonomy_id":1581,"taxonomy":"resource_categories","description":"","parent":1576,"count":11,"filter":"raw"},{"term_id":505,"name":"Procurement","slug":"procurement-phase","term_group":0,"term_taxonomy_id":505,"taxonomy":"resource_categories","description":"","parent":507,"count":3,"filter":"raw"},{"term_id":1517,"name":"Publications","slug":"publications","term_group":0,"term_taxonomy_id":1517,"taxonomy":"resource_categories","description":"","parent":0,"count":45,"filter":"raw"},{"term_id":1599,"name":"Region","slug":"region","term_group":0,"term_taxonomy_id":1599,"taxonomy":"resource_categories","description":"","parent":1589,"count":0,"filter":"raw"},{"term_id":368,"name":"SAS","slug":"sas","term_group":0,"term_taxonomy_id":368,"taxonomy":"resource_categories","description":"","parent":0,"count":1,"filter":"raw"},{"term_id":1593,"name":"Scam Call Detection and Blocking","slug":"scam-call-detection-and-blocking","term_group":0,"term_taxonomy_id":1593,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":1580,"name":"Securing the 5G era","slug":"securing-the-5g-era","term_group":0,"term_taxonomy_id":1580,"taxonomy":"resource_categories","description":"","parent":1576,"count":5,"filter":"raw"},{"term_id":1595,"name":"SIM Swap Fraud Prevention","slug":"sim-swap-fraud-prevention","term_group":0,"term_taxonomy_id":1595,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":1594,"name":"SMS Phishing (Smishing) Detection","slug":"sms-phishing-smishing-detection","term_group":0,"term_taxonomy_id":1594,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":1596,"name":"Subscription Fraud Prevention","slug":"subscription-fraud-prevention","term_group":0,"term_taxonomy_id":1596,"taxonomy":"resource_categories","description":"","parent":1592,"count":0,"filter":"raw"},{"term_id":1563,"name":"Supply Chain Publications","slug":"supply-chain-publications","term_group":0,"term_taxonomy_id":1563,"taxonomy":"resource_categories","description":"","parent":1517,"count":1,"filter":"raw"},{"term_id":1585,"name":"Supply Chain Toolbox","slug":"supply-chain-toolbox","term_group":0,"term_taxonomy_id":1585,"taxonomy":"resource_categories","description":"","parent":1576,"count":8,"filter":"raw"},{"term_id":1583,"name":"T-ISAC","slug":"t-isac","term_group":0,"term_taxonomy_id":1583,"taxonomy":"resource_categories","description":"","parent":1576,"count":0,"filter":"raw"},{"term_id":1579,"name":"T-Isac Blog","slug":"t-isac-blog","term_group":0,"term_taxonomy_id":1579,"taxonomy":"resource_categories","description":"","parent":1501,"count":0,"filter":"raw"},{"term_id":1501,"name":"T-ISAC Resources","slug":"t-isac-resources","term_group":0,"term_taxonomy_id":1501,"taxonomy":"resource_categories","description":"","parent":0,"count":5,"filter":"raw"},{"term_id":1576,"name":"Technical Guidelines","slug":"technical-guidelines","term_group":0,"term_taxonomy_id":1576,"taxonomy":"resource_categories","description":"","parent":0,"count":51,"filter":"raw"},{"term_id":1592,"name":"Theme","slug":"theme","term_group":0,"term_taxonomy_id":1592,"taxonomy":"resource_categories","description":"","parent":1589,"count":0,"filter":"raw"},{"term_id":507,"name":"Topic","slug":"topic","term_group":0,"term_taxonomy_id":507,"taxonomy":"resource_categories","description":"","parent":0,"count":0,"filter":"raw"},{"term_id":1589,"name":"Use case","slug":"use-case","term_group":0,"term_taxonomy_id":1589,"taxonomy":"resource_categories","description":"","parent":0,"count":0,"filter":"raw"}],"_links":{"self":[{"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/gsma_theme_resources\/7800","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/gsma_theme_resources"}],"about":[{"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/types\/gsma_theme_resources"}],"author":[{"embeddable":true,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/users\/39"}],"version-history":[{"count":2,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/gsma_theme_resources\/7800\/revisions"}],"predecessor-version":[{"id":14142,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/gsma_theme_resources\/7800\/revisions\/14142"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/media\/14359"}],"wp:attachment":[{"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/media?parent=7800"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/tags?post=7800"},{"taxonomy":"resource_categories","embeddable":true,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/resource_categories?post=7800"},{"taxonomy":"algolia_discover_type","embeddable":true,"href":"https:\/\/www.gsma.com\/solutions-and-impact\/technologies\/security\/wp-json\/wp\/v2\/algolia_discover_type?post=7800"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}