Autonomous System
AS266475 SEM FRONTEIRAS TELECOMUNICACOES LTDA
ISPActiveBrazilLACNIC
AS266475 (AS266475) is an ISP network operated by SEM FRONTEIRAS TELECOMUNICACOES LTDA in Brazil, registered with LACNIC. It has 26 IPv4 prefixes with 14,848 addresses and 14 IPv6 prefixes, which makes it the 8,296th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses14,848in 26 prefixes
IPv6 prefixes14≈ 1.6 × 10²⁹ addresses
Size rank#8,296of 82,200 active ASNs
Details
OrganizationSEM FRONTEIRAS TELECOMUNICACOES LTDA
AS nameAS266475
Websitesemfronteirasnet.com.br
Country Brazil (BR)
Network typeISP
RegistryLACNIC
Abuse contact—
Registered20170110
Last updated20251119
IPv4 prefixes
26 prefixes · 14,848 addresses| Network | Addresses | First – last address |
|---|---|---|
| 38.191.48.0/20 | 4,096 | 38.191.48.0 – 38.191.63.255 |
| 38.9.112.0/22 | 1,024 | 38.9.112.0 – 38.9.115.255 |
| 38.56.72.0/22 | 1,024 | 38.56.72.0 – 38.56.75.255 |
| 170.83.172.0/22 | 1,024 | 170.83.172.0 – 170.83.175.255 |
| 38.191.48.0/23 | 512 | 38.191.48.0 – 38.191.49.255 |
| 38.191.50.0/23 | 512 | 38.191.50.0 – 38.191.51.255 |
| 38.191.52.0/23 | 512 | 38.191.52.0 – 38.191.53.255 |
| 38.191.54.0/23 | 512 | 38.191.54.0 – 38.191.55.255 |
| 38.191.56.0/23 | 512 | 38.191.56.0 – 38.191.57.255 |
| 38.191.58.0/23 | 512 | 38.191.58.0 – 38.191.59.255 |
| 38.191.60.0/23 | 512 | 38.191.60.0 – 38.191.61.255 |
| 38.191.62.0/23 | 512 | 38.191.62.0 – 38.191.63.255 |
| 38.9.112.0/24 | 256 | 38.9.112.0 – 38.9.112.255 |
| 38.9.113.0/24 | 256 | 38.9.113.0 – 38.9.113.255 |
| 38.9.114.0/24 | 256 | 38.9.114.0 – 38.9.114.255 |
| 38.9.115.0/24 | 256 | 38.9.115.0 – 38.9.115.255 |
| 38.56.72.0/24 | 256 | 38.56.72.0 – 38.56.72.255 |
| 38.56.73.0/24 | 256 | 38.56.73.0 – 38.56.73.255 |
| 38.56.74.0/24 | 256 | 38.56.74.0 – 38.56.74.255 |
| 38.56.75.0/24 | 256 | 38.56.75.0 – 38.56.75.255 |
| 38.191.60.0/24 | 256 | 38.191.60.0 – 38.191.60.255 |
| 38.191.61.0/24 | 256 | 38.191.61.0 – 38.191.61.255 |
| 170.83.172.0/24 | 256 | 170.83.172.0 – 170.83.172.255 |
| 170.83.173.0/24 | 256 | 170.83.173.0 – 170.83.173.255 |
| 170.83.174.0/24 | 256 | 170.83.174.0 – 170.83.174.255 |
38.191.48.0/20 38.9.112.0/22 38.56.72.0/22 170.83.172.0/22 38.191.48.0/23 38.191.50.0/23 38.191.52.0/23 38.191.54.0/23 38.191.56.0/23 38.191.58.0/23 38.191.60.0/23 38.191.62.0/23 38.9.112.0/24 38.9.113.0/24 38.9.114.0/24 38.9.115.0/24 38.56.72.0/24 38.56.73.0/24 38.56.74.0/24 38.56.75.0/24 38.191.60.0/24 38.191.61.0/24 170.83.172.0/24 170.83.173.0/24 170.83.174.0/24
The 25 largest of 26. The API and the database have all of them.
IPv6 prefixes
14 prefixes- 2804:3868::/32
- 2804:3868::/34
- 2804:3868:4000::/34
- 2804:3868:8000::/34
- 2804:3868:c000::/34
- 2804:3868:200::/39
- 2804:3868:600::/39
- 2804:3868:e00::/39
- 2804:3868:1600::/39
- 2804:3868:1a00::/39
- 2804:3868:f200::/39
- 2804:3868:f400::/39
- 2804:3868:f600::/39
- 2804:3868:f800::/39
2804:3868::/32 2804:3868::/34 2804:3868:4000::/34 2804:3868:8000::/34 2804:3868:c000::/34 2804:3868:200::/39 2804:3868:600::/39 2804:3868:e00::/39 2804:3868:1600::/39 2804:3868:1a00::/39 2804:3868:f200::/39 2804:3868:f400::/39 2804:3868:f600::/39 2804:3868:f800::/39
Query AS266475 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=AS266475&key=YOUR_API_KEY"Any address in its prefixes resolves to AS266475, with or without a key:
curl "https://api.ipapi.is/?q=38.191.48.1"Largest networks in Brazil
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