AS53112 — AS53112 - SULNET TELECOM

AS53112 announces 6 IPv4 prefixes covering 13,312 addresses and 1 IPv6 prefixes.

About this network

SULNET TELECOM is the AS handle for Sulnet, a regional telecommunications provider based in Santa Rosa, Rio Grande do Sul.

What it's used for

• The address space carries residential broadband traffic, evidenced by reverse DNS entries such as 187-109-23-255.dynamic.sulnet.net.br and cgnat-138-97-5-0.sulnet.net.br.
• The network announces 13,312 IPv4 addresses across 6 prefixes and 23 IPv6 prefixes, while maintaining only 8 observed neighbours, a ratio characteristic of an access network rather than a transit provider.
• Traffic consists of subscriber eyeballs for cable and DSL services, with CGNAT usage indicating carrier-grade NAT deployment for residential customers.

Notable

• All registrants for the announced prefixes are listed as SULNET TELECOM, matching the AS holder.
• The address inventory is subdivided into six distinct IPv4 blocks, including two /20s and four /22s, alongside a fragmented IPv6 allocation under the 2804:d0c::/34 space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 138.97.4.0/22
• 143.255.60.0/22
• 170.231.72.0/22
• 177.23.8.0/21
• 187.109.16.0/20
• 189.90.144.0/20
• 2804:d0c::/32

Upstream networks

• AS8167 V tal
• AS28283 Adylnet Telecom
• AS53062 GGNET TELECOMUNICACOES LTDA

Downstream networks

• AS269133 Fundacao Regional Integrada - Campus Santo Angelo

Adjacent networks

• AS28283 Adylnet Telecom
• AS8167 V tal
• AS53062 GGNET TELECOMUNICACOES LTDA
• AS269133 Fundacao Regional Integrada - Campus Santo Angelo
• AS262907 BRASIL TECPAR AMIGO AVATO

Routing security

• RPKI: 10 valid, 0 invalid and 0 not-found announcements; 10 ROAs.
• ASPA: none published.
• IRR: 80% of announcements registered; 9 route objects.
• Listed in as-sets: AS-267613, AS-53062-CUSTOMERS, AS-53062-CUSTOMERS, AS-8167-BGP-CUSTOMERS, AS-8167_CUSTOMERS, AS-ADYLNET-CUSTOMERS, AS-AS393742, AS-CTBC-CUSTOMERS29, AS-CTBC-TOOLS-7, AS-DURAND1-CUSTOMER, AS-E1-AUTOMATION-CUSTOMER, AS-ELETRONET-CUST, AS-EMBRATELNET, AS-FORTEL-CUSTOMERS, AS-HURRICANE, AS-HURRICANEV6, AS-HWNG-DOWNSTREAMS, AS-ITXBR, AS-ITXBR1, AS-MEGATELECOM-CUSTOMERS, AS-ROCKETNETWORK-TOOLS-2, AS-SAMM, AS262907:AS-BRASILTECPAR-CUSTOMERS, AS264409:AS-CONE, AS28178:AS-CUSTOMERS.

Internet exchanges

• IX.br (PTT.br) São Paulo — São Paulo, Brazil
• IX.br (PTT.br) Porto Alegre — Porto Alegre, Brazil