AS27720 — AS27720 - CITTA TELECOM LTDA

AS27720 announces 5 IPv4 prefixes covering 6,144 addresses and 1 IPv6 prefixes.

About this network

AS27720 is operated by Citta Telecom Ltda.

What it's used for

• The address space carries residential and mobile access traffic, evidenced by reverse DNS entries such as cgnat-bre.cittatelecom.net.br and reservado-sp.cittatelecom.net.br.
• The AS announces 6144 IPv4 addresses across 8 prefixes and 55 IPv6 prefixes, while maintaining 28 observed neighbours. This ratio of address space to peering partners indicates an access or eyeball network rather than a transit provider.

Notable

• Most prefixes are registered to CITTA TELECOM LTDA, though the prefix 191.128.224.0/22 is registered to TIM S/A, suggesting a lease or historical acquisition.
• The inventory consists of multiple /22 blocks and smaller subdivisions, with reverse DNS indicating specific regional segments like reservado-rj and reservado-sp.

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

Announced prefixes

• 138.59.96.0/22
• 143.208.156.0/22
• 177.129.8.0/21
• 191.128.224.0/22
• 200.95.172.0/22
• 2804:da4::/32

Upstream networks

• AS28663 FLYS INTERATIVA LTDA
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS262444 XTURBO PROVEDOR DE INTERNET LTDA
• AS22381 SAMM TECNOLOGIA E TELECOMUNICACOES S.A
• AS26615 TIM S/A
• AS24482 SG.GS
• AS52863 UPX TECNOLOGIA LTDA

Downstream networks

• AS28336 Dekanet Comunicacao Multimidia Ltda.
• AS263584 WanHouse Solucoes em Tecnologia LTDA - EPP

Adjacent networks

• AS28663 FLYS INTERATIVA LTDA
• AS2914 NTT America, Inc.
• AS6939 Hurricane Electric LLC
• AS262444 XTURBO PROVEDOR DE INTERNET LTDA
• AS28336 Dekanet Comunicacao Multimidia Ltda.
• AS26615 TIM S/A
• AS22381 SAMM TECNOLOGIA E TELECOMUNICACOES S.A
• AS263584 WanHouse Solucoes em Tecnologia LTDA - EPP
• AS24482 SG.GS
• AS52863 UPX TECNOLOGIA LTDA

Routing security

• RPKI: 51 valid, 0 invalid and 4 not-found announcements; 51 ROAs.
• ASPA: 7 authorised providers.
• IRR: 36% of announcements registered; 20 route objects.
• Listed in as-sets: AS-267613, AS-27720, AS-28124, AS-CITTA, AS-CTBC-CUSTOMERS1, AS-CTBC-CUSTOMERS81, AS-CTBC-TOOLS-1, AS-DURAND1-CUSTOMER, AS-E1-AUTOMATION-CUSTOMER, AS-EMBRATELNET, AS-FLYS, AS-FORTE-TELECOM-CUSTOMER-GBLX, AS-FORTE-TELECOM-CUSTOMER-POC, AS-HURRICANEV6, AS-HWNG-DOWNSTREAMS, AS-MEGATELECOM-CUSTOMERS, AS-SB-AUTOMATION-CUSTOMER, AS-TASCOM-CUSTOMERS, AS-UFINET-LATAM-BRASIL, AS-UPIX-CUSTOMERS, AS262444:AS-CONE, AS264409:AS-CONE, AS26615:AS-CUSTOMERS, AS27720:AS-CUSTOMERS, AS40850:AS-CUSTOMERS.

Internet exchanges

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