Autonomous System
AS21574 Century Telecom Ltda
ISPActiveBrazilLACNIC
AS21574 (AS21574) is an ISP network operated by Century Telecom Ltda in Brazil, registered with LACNIC. It has 4 IPv4 prefixes with 13,312 addresses and 1 IPv6 prefix, which makes it the 8,710th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses13,312in 4 prefixes
IPv6 prefixes1≈ 7.9 × 10²⁸ addresses
Size rank#8,710of 82,200 active ASNs
Details
OrganizationCentury Telecom Ltda
AS nameAS21574
Websitecentury.net.br
Country Brazil (BR)
Network typeISP
RegistryLACNIC
Abuse contactfapesp@century.net.br
Registered20010607
Last updated20200610
IPv4 prefixes
4 prefixes · 13,312 addresses| Network | Addresses | First – last address |
|---|---|---|
| 186.249.224.0/20 | 4,096 | 186.249.224.0 – 186.249.239.255 |
| 187.1.176.0/20 | 4,096 | 187.1.176.0 – 187.1.191.255 |
| 200.169.0.0/20 | 4,096 | 200.169.0.0 – 200.169.15.255 |
| 168.227.200.0/22 | 1,024 | 168.227.200.0 – 168.227.203.255 |
186.249.224.0/20 187.1.176.0/20 200.169.0.0/20 168.227.200.0/22
IPv6 prefixes
1 prefix- 2804:23ec::/32
2804:23ec::/32
Query AS21574 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=AS21574&key=YOUR_API_KEY"Any address in its prefixes resolves to AS21574, with or without a key:
curl "https://api.ipapi.is/?q=186.249.224.1"Largest networks in Brazil
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