$ query “AS25192” --type=asn → 1 result(s)
AS25192 · CZNIC-AS
CZ.NIC z.s.p.o.
AS25192 is operated by CZ.NIC z.s.p.o. and serves as a residential access provider, registered in Czechia since 2002. The system announces 6 400 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Czechia.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- August 28, 2002
- Last Changed
- October 03, 2026
- Last Seen
- October 23, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 8 / 6
- IPv6 Prefixes (raw / aggregated)
- 6 / 6
- IPv4 Addresses
- 6 400
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇨🇿 Czechia (6 400 IPs)
- Prefix Changed
- September 11, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 14 upstreams providing transit
- Peers
- 300 networks exchanging traffic without transit
- Downstream Customers
- 4 downstreams buying transit
- Unclassified
- 8 unclassified BGP neighbors
- Degree
- 326 unique BGP neighbors
- Reach
- 5 networks in customer cone
Upstream Providers (14)
Prefix Lists
IPv4 Prefixes (8 total)
- 217.31.192.0/20 (4 096 addresses (/20 prefix))
- 185.43.132.0/22 (1 024 addresses (/22 prefix))
- 194.0.12.0/23 (512 addresses (/23 prefix))
- 193.29.206.0/24 (256 addresses (/24 prefix))
- 194.0.14.0/24 (256 addresses (/24 prefix))
- 212.237.229.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (6 total)
- 2001:1488::/32
- 2001:678:1::/48
- 2001:678:f::/48
- 2001:678:10::/48
- 2001:148f:fffb::/48
- 2001:148f:fffd::/48