217.197.144.0/20 - CZ NORDICTELECOMREGIONAL O2 Czech Republic, A.S (AS42908)
CIDR
217.197.144.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇨🇿 Czechia
City
Prague
RIR
RIPE NCC
Status
allocated
Allocated
2004-10-21
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 217.197.144.0/20 | AS42908 CZ-NORDICTELECOMREGIONAL O2 Czech Republic, a.s. | Valid | RIPE | 2026-10-12 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 217.197.144.0/20 | AS42908 | /20 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS42908 | RIPE | mnt-nordictelecom | 2025-04-01 |
More Specific Prefixes
Transfer History
Registry transfers of 217.197.144.0/20, blocks inside it, or blocks containing it.
- 217.197.144.0/20Transfer ·
- 217.197.144.0/20Transfer ·
Related Prefixes
Geolocation
Abuse Contact
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the RIPE NCC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/217.197.144.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/217.197.144.0/20" | jq
External Links