$ query “AS12570” --type=asn → 1 result(s)
AS12570 · ITSELF
O2 Czech Republic a.s.
AS12570 is operated by O2 Czech Republic a.s. and serves as a mid-size transit provider, based in Czechia since 2002. The system announces a respectable 53 760 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to Czechia, with additional presence in Slovakia and the Netherlands.
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- May 27, 2002
- Last Changed
- March 04, 2026
- Last Seen
- June 22, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 11 / 11
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 53 760
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇨🇿 Czechia (104 192 IPs), 🇸🇰 Slovakia (512 IPs), 🇳🇱 Netherlands (32 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 3 flagged IPs out of 53 760 total (0.01%)
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Downstream Customers
- 11 downstreams buying transit
- Degree
- 13 unique BGP neighbors
- Reach
- 17 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (11 total)
- 88.83.224.0/19 (8 192 addresses (/19 prefix))
- 109.105.32.0/19 (8 192 addresses (/19 prefix))
- 212.4.128.0/19 (8 192 addresses (/19 prefix))
- 212.96.160.0/19 (8 192 addresses (/19 prefix))
- 213.211.32.0/19 (8 192 addresses (/19 prefix))
- 80.78.144.0/20 (4 096 addresses (/20 prefix))
- 89.190.48.0/20 (4 096 addresses (/20 prefix))
- 89.190.40.0/21 (2 048 addresses (/21 prefix))
- 185.8.188.0/22 (1 024 addresses (/22 prefix))
- 193.17.248.0/22 (1 024 addresses (/22 prefix))
- 195.78.122.0/23 (512 addresses (/23 prefix))
IPv6 Prefixes (2 total)
- 2001:4ba8::/29
- 2a0b:bb41::/32