{"id":34367,"date":"2026-09-16T13:14:17","date_gmt":"2026-09-16T13:14:17","guid":{"rendered":"https:\/\/blog.lacnic.net\/?p=34367"},"modified":"2026-09-16T13:14:59","modified_gmt":"2026-09-16T13:14:59","slug":"asn-only-region","status":"publish","type":"post","link":"https:\/\/blog.lacnic.net\/pt-br\/asn-only-region\/","title":{"rendered":"Pesquisa sobre as organiza\u00e7\u00f5es ASN-Only na regi\u00e3o do LACNIC"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Por <a href=\"https:\/\/blog.lacnic.net\/pt-br\/autor\/alejandro-acosta\/\">Alejandro Acosta<\/a> e <a href=\"https:\/\/blog.lacnic.net\/pt-br\/autor\/elisa-peirano\/\">Elisa Peirano<\/a> do LACNIC<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Introdu\u00e7\u00e3o<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O objetivo desta an\u00e1lise \u00e9 expor o efeito recente que vem ocorrendo nos RIR e, em particular, no LACNIC sobre as organiza\u00e7\u00f5es s\u00f3 ASN (ASN-Only).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>O que \u00e9 uma organiza\u00e7\u00e3o s\u00f3 ASN?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Trata-se de organiza\u00e7\u00f5es e institui\u00e7\u00f5es que n\u00e3o possuem prefixos IPv4 nem prefixos IPv6, mas que possuem um sistema aut\u00f4nomo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a><\/a>Motivo do estudo<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Em poucas palavras, nosso interesse \u00e9 entender o efeito das solicita\u00e7\u00f5es s\u00f3 ASN. Os aspectos que queremos averiguar s\u00e3o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Anunciam prefixos IPv4?<\/li>\n\n\n\n<li>Anunciam prefixos IPv6?<\/li>\n\n\n\n<li>Tamanho do prefixo anunciado<\/li>\n\n\n\n<li>N\u00famero de prefixos anunciados<\/li>\n\n\n\n<li>Estado do RPKI<\/li>\n\n\n\n<li>RIR de cada um dos prefixos anunciados<\/li>\n\n\n\n<li>ASN que n\u00e3o s\u00e3o vistos na DFZ<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Dados gerais<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">No LACNIC, existem atualmente 522 organiza\u00e7\u00f5es s\u00f3 ASN. Do total, 215 ASN anunciam prefixos IPv4 e\/ou IPv6 na Internet. Especificamente, esses ASN anunciam 1069 prefixos IPv4 e 64 prefixos IPv6. 216 ASN s\u00e3o vis\u00edveis na DFZ.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">As organiza\u00e7\u00f5es s\u00f3 ASN est\u00e3o distribu\u00eddas entre os pa\u00edses da regi\u00e3o do LACNIC da seguinte forma:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"718\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region-1024x718.png\" alt=\"\" class=\"wp-image-34349\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region-1024x718.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region-300x210.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region-470x330.png 470w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region-768x539.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig1-asn-only-region.png 1052w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Tamanho dos prefixos anunciados<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As imagens abaixo mostram o tamanho dos prefixos anunciados no IPv4 (\u00e0 esquerda) e no IPv6 (\u00e0 direita). Como era de se esperar, o tamanho mais anunciado no IPv4 \u00e9 \/24 e no IPv6 \u00e9 \/48.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"868\" height=\"806\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig2-asn-only-region.png\" alt=\"\" class=\"wp-image-34352\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig2-asn-only-region.png 868w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig2-asn-only-region-300x279.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig2-asn-only-region-355x330.png 355w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig2-asn-only-region-768x713.png 768w\" sizes=\"(max-width: 868px) 100vw, 868px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"708\" height=\"658\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig3-asn-only-region.png\" alt=\"\" class=\"wp-image-34355\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig3-asn-only-region.png 708w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig3-asn-only-region-300x279.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig3-asn-only-region-355x330.png 355w\" sizes=\"(max-width: 708px) 100vw, 708px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Origem dos prefixos anunciados<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Um fato interessante \u00e9 a origem dos prefixos que anunciam esses ASN. \u00c9 poss\u00edvel observar que a maioria \u00e9 da regi\u00e3o do LACNIC, mas tamb\u00e9m s\u00e3o anunciados prefixos de ARIN e RIPE NCC e, em menor escala, alguns de APNIC e AFRINIC<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><td><strong>RIR<\/strong><\/td><td><strong>Recursos IPv4<\/strong><\/td><td><strong>Recursos IPv6<\/strong><\/td><td><strong>Total consolidado<\/strong><\/td><td><strong>Percentagem total<\/strong><\/td><\/tr><\/thead><tbody><tr><td>AFRINIC<\/td><td>&nbsp;&nbsp;&nbsp; 5<\/td><td>&nbsp; 0<\/td><td>&nbsp;&nbsp;&nbsp; 5<\/td><td>0.44%<\/td><\/tr><tr><td>APNIC<\/td><td>&nbsp;&nbsp;&nbsp; 1<\/td><td>&nbsp; 0<\/td><td>&nbsp;&nbsp;&nbsp; 1<\/td><td>0.09%<\/td><\/tr><tr><td>ARIN<\/td><td>154<\/td><td>&nbsp; 4<\/td><td>158<\/td><td>13.94%<\/td><\/tr><tr><td>LACNIC<\/td><td>846<\/td><td>59<\/td><td>905<\/td><td>79.88%<\/td><\/tr><tr><td>RIPE NCC<\/td><td>&nbsp; 63<\/td><td>&nbsp; 1<\/td><td>&nbsp; 64<\/td><td>5.65%<\/td><\/tr><tr><td><strong>Global<\/strong><\/td><td><strong>1069<\/strong><\/td><td><strong>64<\/strong><\/td><td><strong>1133<\/strong><\/td><td><strong>100%<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">De que RIR cada pa\u00eds anuncia prefixos?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se analisarmos as informa\u00e7\u00f5es em n\u00edvel nacional, podemos ver de que RIR anuncia prefixos cada pa\u00eds das organiza\u00e7\u00f5es s\u00f3 ASN.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"657\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region-1024x657.png\" alt=\"\" class=\"wp-image-34358\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region-1024x657.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region-300x193.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region-514x330.png 514w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region-768x493.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig4-asn-only-region.png 1162w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Observa-se que apenas o Brasil anuncia prefixos do APNIC, e apenas o M\u00e9xico e a Venezuela anunciam prefixos do AFRINIC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">O Uruguai anuncia apenas 1 prefixo do ARIN, e o Paraguai apenas 1 prefixo do RIPE NCC.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dezesseis pa\u00edses da regi\u00e3o anunciam prefixos do ARIN, e sete do RIPE NCC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Ado\u00e7\u00e3o do RPKI<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dos 215 ASN que anunciam prefixos, 138 possuem pelo menos 1 ROA v\u00e1lido. O restante possui ROA inv\u00e1lidos ou desconhecidos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A seguir, pode-se apreciar o n\u00famero de prefixos (IPv4 e IPv6) segundo o estado do ROA<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"651\" src=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-1024x651.png\" alt=\"\" class=\"wp-image-34361\" srcset=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-1024x651.png 1024w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-300x191.png 300w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-519x330.png 519w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-768x489.png 768w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region-1536x977.png 1536w, https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/fig5-asn-only-region.png 1814w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>DFZ<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">216 ASN est\u00e3o vis\u00edveis na DFZ. 189 anunciam apenas prefixos IPv4, 6 anunciam apenas prefixos IPv6 e 21 anunciam IPv4 e IPv6.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dos 1067 prefixos IPv4 vis\u00edveis na DFZ, 592 possuem RPKI VALID, 470 UNKNOWN e 4 INVALID. E dos 64 prefixos IPv6 anunciados na DFZ, 38 possuem ROA VALID e 26 UNKNOWN.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Conclus\u00f5es<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">O estudo analisa 522 organiza\u00e7\u00f5es s\u00f3 ASN no LACNIC, revelando que apenas 216 anunciam prefixos na rede (principalmente IPv4 \/24), enquanto 306 permanecem invis\u00edveis na DFZ. A pesquisa destaca que 79,88% dos recursos anunciados prov\u00eam do LACNIC, com alto uso do ARIN, e que 120 ASN validam seus prefixos mediante o RPKI.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Resumindo:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Todo o espa\u00e7o anunciado \u00e9 principalmente dos RIR: LACNIC, ARIN e RIPE NCC. Contudo, tamb\u00e9m s\u00e3o observados alguns poucos no APNIC e no AFRINIC.<\/li>\n\n\n\n<li>Os prefixos IPv4 encontram-se altamente fragmentados em redes pequenas. 90,3% dos an\u00fancios s\u00e3o m\u00e1scaras \/24 (966 prefixos), o tamanho m\u00ednimo padr\u00e3o permitido na tabela de roteamento global BGP.<\/li>\n\n\n\n<li>A implanta\u00e7\u00e3o do IPv6 \u00e9 liderada por m\u00e1scaras \/48 (62,5%)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Por Alejandro Acosta e Elisa Peirano do LACNIC Introdu\u00e7\u00e3o O objetivo desta an\u00e1lise \u00e9 expor o efeito recente que vem ocorrendo nos RIR e, em particular, no LACNIC sobre as organiza\u00e7\u00f5es s\u00f3 ASN (ASN-Only). O que \u00e9 uma organiza\u00e7\u00e3o s\u00f3 ASN? Trata-se de organiza\u00e7\u00f5es e institui\u00e7\u00f5es que n\u00e3o possuem prefixos IPv4 nem prefixos IPv6, mas [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":34346,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[920],"tags":[1281],"archivo":[1346,1452],"taxonomy-authors":[1247,1376],"tipo_autor":[],"class_list":["post-34367","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-roteamento","tag-roteamento","archivo-edicoes-anteriores","archivo-destaques-2023","taxonomy-authors-alejandro-acosta-pt-br","taxonomy-authors-elisa-peirano-pt-br"],"acf":{"author":"","related_notes":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>LACNIC Blog | Pesquisa sobre as organiza\u00e7\u00f5es ASN-Only na regi\u00e3o do LACNIC<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blog.lacnic.net\/pt-br\/asn-only-region\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LACNIC Blog | Pesquisa sobre as organiza\u00e7\u00f5es ASN-Only na regi\u00e3o do LACNIC\" \/>\n<meta property=\"og:description\" content=\"Por Alejandro Acosta e Elisa Peirano do LACNIC Introdu\u00e7\u00e3o O objetivo desta an\u00e1lise \u00e9 expor o efeito recente que vem ocorrendo nos RIR e, em particular, no LACNIC sobre as organiza\u00e7\u00f5es s\u00f3 ASN (ASN-Only). 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Trata-se de organiza\u00e7\u00f5es e institui\u00e7\u00f5es que n\u00e3o possuem prefixos IPv4 nem prefixos IPv6, mas [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blog.lacnic.net\/pt-br\/asn-only-region\/\" \/>\n<meta property=\"og:site_name\" content=\"LACNIC Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/lacnic\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-16T13:14:17+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-16T13:14:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blog.lacnic.net\/wp-content\/uploads\/2026\/09\/asn-only-region.png\" \/>\n\t<meta property=\"og:image:width\" content=\"680\" \/>\n\t<meta property=\"og:image:height\" content=\"330\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Gianni\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" 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