Autonomous System
AS42908 O2 Czech Republic, a.s.
ISPActiveCzechiaRIPE
AS42908 (CZ-NORDICTELECOMREGIONAL) is an ISP network operated by O2 Czech Republic, a.s. in Czechia, registered with RIPE. It has 35 IPv4 prefixes with 183,296 addresses and 9 IPv6 prefixes, which makes it the 1,398th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses183,296in 35 prefixes
IPv6 prefixes9≈ 2.9 × 10³⁰ addresses
Size rank#1,398of 82,200 active ASNs
Details
OrganizationO2 Czech Republic, a.s.
AS nameCZ-NORDICTELECOMREGIONAL
Websiteo2.cz
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@o2.cz
Registered2007-05-09
Last updated2025-04-01
IPv4 prefixes
35 prefixes · 183,296 addresses| Network | Addresses | First – last address |
|---|---|---|
| 213.19.0.0/17 | 32,768 | 213.19.0.0 – 213.19.127.255 |
| 78.136.128.0/18 | 16,384 | 78.136.128.0 – 78.136.191.255 |
| 94.241.64.0/18 | 16,384 | 94.241.64.0 – 94.241.127.255 |
| 213.250.192.0/18 | 16,384 | 213.250.192.0 – 213.250.255.255 |
| 88.81.64.0/19 | 8,192 | 88.81.64.0 – 88.81.95.255 |
| 91.187.32.0/19 | 8,192 | 91.187.32.0 – 91.187.63.255 |
| 109.108.96.0/19 | 8,192 | 109.108.96.0 – 109.108.127.255 |
| 176.102.128.0/19 | 8,192 | 176.102.128.0 – 176.102.159.255 |
| 213.155.32.0/19 | 8,192 | 213.155.32.0 – 213.155.63.255 |
| 5.102.48.0/20 | 4,096 | 5.102.48.0 – 5.102.63.255 |
| 80.87.176.0/20 | 4,096 | 80.87.176.0 – 80.87.191.255 |
| 80.90.128.0/20 | 4,096 | 80.90.128.0 – 80.90.143.255 |
| 80.251.240.0/20 | 4,096 | 80.251.240.0 – 80.251.255.255 |
| 92.61.80.0/20 | 4,096 | 92.61.80.0 – 92.61.95.255 |
| 178.17.80.0/20 | 4,096 | 178.17.80.0 – 178.17.95.255 |
| 217.170.96.0/20 | 4,096 | 217.170.96.0 – 217.170.111.255 |
| 217.196.112.0/20 | 4,096 | 217.196.112.0 – 217.196.127.255 |
| 217.197.144.0/20 | 4,096 | 217.197.144.0 – 217.197.159.255 |
| 31.10.56.0/21 | 2,048 | 31.10.56.0 – 31.10.63.255 |
| 46.183.56.0/21 | 2,048 | 46.183.56.0 – 46.183.63.255 |
| 46.231.72.0/21 | 2,048 | 46.231.72.0 – 46.231.79.255 |
| 77.95.192.0/21 | 2,048 | 77.95.192.0 – 77.95.199.255 |
| 93.92.48.0/21 | 2,048 | 93.92.48.0 – 93.92.55.255 |
| 93.93.32.0/21 | 2,048 | 93.93.32.0 – 93.93.39.255 |
| 45.159.116.0/22 | 1,024 | 45.159.116.0 – 45.159.119.255 |
213.19.0.0/17 78.136.128.0/18 94.241.64.0/18 213.250.192.0/18 88.81.64.0/19 91.187.32.0/19 109.108.96.0/19 176.102.128.0/19 213.155.32.0/19 5.102.48.0/20 80.87.176.0/20 80.90.128.0/20 80.251.240.0/20 92.61.80.0/20 178.17.80.0/20 217.170.96.0/20 217.196.112.0/20 217.197.144.0/20 31.10.56.0/21 46.183.56.0/21 46.231.72.0/21 77.95.192.0/21 93.92.48.0/21 93.93.32.0/21 45.159.116.0/22
The 25 largest of 35. The API and the database have all of them.
IPv6 prefixes
9 prefixes- 2a01:9f40::/29
- 2a02:2588::/29
- 2a07:cc80::/29
- 2a0c:8b40::/29
- 2a00:e4c0::/32
- 2a02:2428::/32
- 2a03:1600::/32
- 2a03:7a00::/32
- 2a03:a820::/32
2a01:9f40::/29 2a02:2588::/29 2a07:cc80::/29 2a0c:8b40::/29 2a00:e4c0::/32 2a02:2428::/32 2a03:1600::/32 2a03:7a00::/32 2a03:a820::/32
Query AS42908 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=AS42908&key=YOUR_API_KEY"
Any address in its prefixes resolves to AS42908, with or without a key:
curl "https://api.ipapi.is/?q=213.19.0.1"
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