$ query “AS16246” --type=asn → 1 result(s)
AS16246 · AS16246
O2 Czech Republic a.s.
AS16246 is owned by O2 Czech Republic a.s. and is a mid-size transit provider, based in Czechia since 2003. The system announces a solid 133 120 IPv4 addresses, including a /16, and supports IPv6. The bulk of its IP address space is in Czechia.
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Internet Service Provider
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- October 21, 2003
- Last Changed
- March 04, 2026
- Last Seen
- April 20, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 13 / 13
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 133 120
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇨🇿 Czechia (264 192 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Downstream Customers
- 12 downstreams buying transit
- Unclassified
- 1 unclassified BGP neighbor
- Degree
- 14 unique BGP neighbors
- Reach
- 29 networks in customer cone
Upstream Providers (1)
- AS5610 — O2-CZECH-REPUBLIC
Prefix Lists
IPv4 Prefixes (13 total)
- 188.175.0.0/16 (65 536 addresses (/16 prefix))
- 94.74.192.0/18 (16 384 addresses (/18 prefix))
- 86.63.192.0/19 (8 192 addresses (/19 prefix))
- 92.240.160.0/19 (8 192 addresses (/19 prefix))
- 82.150.160.0/19 (8 192 addresses (/19 prefix))
- 213.180.32.0/19 (8 192 addresses (/19 prefix))
- 95.143.128.0/20 (4 096 addresses (/20 prefix))
- 176.98.96.0/20 (4 096 addresses (/20 prefix))
- 178.17.96.0/20 (4 096 addresses (/20 prefix))
- 77.87.232.0/21 (2 048 addresses (/21 prefix))
- 78.108.152.0/21 (2 048 addresses (/21 prefix))
- 91.197.116.0/22 (1 024 addresses (/22 prefix))
- 185.15.252.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (2 total)
- 2a02:350::/29
- 2a03:b4c0::/32