Autonomous System
AS21453 Flex Ltd.
ISPActiveRussiaRIPE
AS21453 (FLEX-AS) is an ISP network operated by Flex Ltd. in Russia, registered with RIPE. It has 17 IPv4 prefixes with 179,968 addresses and 2 IPv6 prefixes, which makes it the 1,422nd largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses179,968in 17 prefixes
IPv6 prefixes2≈ 4.0 × 10²⁹ addresses
Size rank#1,422of 82,200 active ASNs
Details
OrganizationFlex Ltd.
AS nameFLEX-AS
Websiteflex.ru
Country Russia (RU)
Network typeISP
RegistryRIPE
Abuse contactabuse@flex.ru
Registered2002-06-26
Last updated2026-05-21
IPv4 prefixes
17 prefixes · 179,968 addresses| Network | Addresses | First – last address |
|---|---|---|
| 94.253.0.0/17 | 32,768 | 94.253.0.0 – 94.253.127.255 |
| 178.167.0.0/17 | 32,768 | 178.167.0.0 – 178.167.127.255 |
| 94.253.0.0/18 | 16,384 | 94.253.0.0 – 94.253.63.255 |
| 95.183.64.0/18 | 16,384 | 95.183.64.0 – 95.183.127.255 |
| 178.167.0.0/18 | 16,384 | 178.167.0.0 – 178.167.63.255 |
| 80.252.128.0/19 | 8,192 | 80.252.128.0 – 80.252.159.255 |
| 88.84.192.0/19 | 8,192 | 88.84.192.0 – 88.84.223.255 |
| 94.253.96.0/19 | 8,192 | 94.253.96.0 – 94.253.127.255 |
| 178.57.224.0/19 | 8,192 | 178.57.224.0 – 178.57.255.255 |
| 178.167.64.0/19 | 8,192 | 178.167.64.0 – 178.167.95.255 |
| 178.167.96.0/19 | 8,192 | 178.167.96.0 – 178.167.127.255 |
| 212.7.224.0/19 | 8,192 | 212.7.224.0 – 212.7.255.255 |
| 80.84.112.0/20 | 4,096 | 80.84.112.0 – 80.84.127.255 |
| 31.31.64.0/21 | 2,048 | 31.31.64.0 – 31.31.71.255 |
| 185.5.148.0/22 | 1,024 | 185.5.148.0 – 185.5.151.255 |
| 94.253.102.0/23 | 512 | 94.253.102.0 – 94.253.103.255 |
| 94.253.2.0/24 | 256 | 94.253.2.0 – 94.253.2.255 |
94.253.0.0/17 178.167.0.0/17 94.253.0.0/18 95.183.64.0/18 178.167.0.0/18 80.252.128.0/19 88.84.192.0/19 94.253.96.0/19 178.57.224.0/19 178.167.64.0/19 178.167.96.0/19 212.7.224.0/19 80.84.112.0/20 31.31.64.0/21 185.5.148.0/22 94.253.102.0/23 94.253.2.0/24
IPv6 prefixes
2 prefixes- 2a01:4200::/30
- 2a01:4200::/32
2a01:4200::/30 2a01:4200::/32
Query AS21453 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=AS21453&key=YOUR_API_KEY"Any address in its prefixes resolves to AS21453, with or without a key:
curl "https://api.ipapi.is/?q=94.253.0.1"