Autonomous System

AS28580 Cilnet Comunicação e Informática S.A.

ISPActiveBrazilLACNIC

AS28580 (AS28580) is an ISP network operated by Cilnet Comunicação e Informática S.A. in Brazil, registered with LACNIC. It has 30 IPv4 prefixes with 78,848 addresses and 13 IPv6 prefixes, which makes it the 2,727th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses78,848in 30 prefixes
IPv6 prefixes13≈ 7.9 × 10²⁸ addresses
Size rank#2,727of 82,200 active ASNs
Abuser scoreLow0.22% of its addresses flagged · method

Details

OrganizationCilnet Comunicação e Informática S.A.
AS nameAS28580
Websitefasternet.com.br
Country Brazil (BR)
Network typeISP
RegistryLACNIC
Abuse contact—
Registered20050117
Last updated20260513

IPv4 prefixes

30 prefixes · 78,848 addresses
NetworkAddressesFirst – last address
186.224.128.0/198,192186.224.128.0 – 186.224.159.255
186.224.160.0/198,192186.224.160.0 – 186.224.191.255
177.101.48.0/204,096177.101.48.0 – 177.101.63.255
187.45.0.0/204,096187.45.0.0 – 187.45.15.255
187.45.16.0/204,096187.45.16.0 – 187.45.31.255
187.84.0.0/204,096187.84.0.0 – 187.84.15.255
189.28.224.0/204,096189.28.224.0 – 189.28.239.255
189.28.240.0/204,096189.28.240.0 – 189.28.255.255
189.51.208.0/204,096189.51.208.0 – 189.51.223.255
191.253.240.0/204,096191.253.240.0 – 191.253.255.255
200.187.80.0/204,096200.187.80.0 – 200.187.95.255
201.46.32.0/204,096201.46.32.0 – 201.46.47.255
201.46.48.0/204,096201.46.48.0 – 201.46.63.255
45.7.204.0/221,02445.7.204.0 – 45.7.207.255
45.166.124.0/221,02445.166.124.0 – 45.166.127.255
45.170.140.0/221,02445.170.140.0 – 45.170.143.255
45.224.76.0/221,02445.224.76.0 – 45.224.79.255
45.237.16.0/221,02445.237.16.0 – 45.237.19.255
138.0.180.0/221,024138.0.180.0 – 138.0.183.255
138.122.68.0/221,024138.122.68.0 – 138.122.71.255
138.186.180.0/221,024138.186.180.0 – 138.186.183.255
143.0.232.0/221,024143.0.232.0 – 143.0.235.255
168.90.184.0/221,024168.90.184.0 – 168.90.187.255
168.194.4.0/221,024168.194.4.0 – 168.194.7.255
168.194.228.0/221,024168.194.228.0 – 168.194.231.255
The 25 largest of 30. The API and the database have all of them.

IPv6 prefixes

13 prefixes
  • 2804:90::/32
  • 2804:5f4:c001::/48
  • 2804:5f4:c002::/48
  • 2804:5f4:c003::/48
  • 2804:5f4:c011::/48
  • 2804:5f4:c012::/48
  • 2804:5f4:c013::/48
  • 2804:5f4:c021::/48
  • 2804:5f4:c022::/48
  • 2804:5f4:c023::/48
  • 2804:5f4:c031::/48
  • 2804:5f4:c032::/48
  • 2804:5f4:c033::/48

Query AS28580 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS28580&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS28580, with or without a key:

curl "https://api.ipapi.is/?q=186.224.128.1"

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