AS28580 Cilnet Comunicacao e Informatica S.A.

AS28580 - Cilnet Comunicacao e Informatica S.A. · registered in Brazil

IPv4 addresses77,82437 prefixes · 0.002% of announced IPv4

Rank in Brazil#41largest network in BR by IPv4 space, of 7,969 · 0.10% of BR

Rank worldwide#2,235of 79,396 networks with IPv4

IPv61 x /32 (65,548 x /48)9 prefixes

CountryBrazil8,771 ASNs registered there

Open AS28580 in ASN lookup Look up an IP in this network (45.7.204.1) All networks in Brazil

IPv4 prefixes

All 37 prefixes, in address order.

45.7.204.0/22
45.166.124.0/22
45.170.140.0/22
45.224.76.0/23
45.224.78.0/24
45.224.79.0/24
45.237.16.0/22
138.0.180.0/22
138.122.68.0/22
138.186.180.0/22
143.0.232.0/22
168.90.184.0/22
168.194.4.0/22
168.194.228.0/22
170.245.20.0/22
170.247.116.0/22
177.85.40.0/22
177.101.48.0/20
186.224.128.0/18
187.45.0.0/20
187.45.16.0/21
187.45.24.0/22
187.45.28.0/23
187.45.30.0/24
187.45.31.0/24
187.84.0.0/20
189.28.224.0/21
189.28.232.0/22
189.28.236.0/24
189.28.237.0/24
189.28.238.0/23
189.28.240.0/20
189.51.208.0/20
191.253.240.0/20
200.187.80.0/20
201.46.32.0/19
201.150.100.0/22

IPv6 prefixes

All 9 prefixes.

2804:90::/32
2804:5f4:c001::/48
2804:5f4:c002::/47
2804:5f4:c011::/48
2804:5f4:c012::/47
2804:5f4:c021::/48
2804:5f4:c022::/47
2804:5f4:c031::/48
2804:5f4:c032::/47

Similar-sized networks in Brazil

ASNNameIPv4 addresses

AS262589#38 AS262589 - SAMM TECNOLOGIA E TELECOMUNICACOES S.A85,248

AS262773#39 AS262773 - PROXXIMA TELECOMUNICACOES SA84,992

AS28126#40 AS28126 - BRISANET SERVICOS DE TELECOMUNICACOES S.A83,968

AS10715#42 AS10715 - Universidade Federal de Santa Catarina73,728

AS14840#43 AS14840 - BR.Digital Telecom72,960

AS19089#44 AS19089 - Scala Data Centers71,680

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources