$ query “AS25512” --type=asn → 1 result(s)
AS25512 · CDT-AS
CD-Telematika a.s.
AS25512 belongs to CD-Telematika a.s. and is a mid-size transit provider, registered in Czechia since 2002. The system announces a solid 117 760 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Czechia, with additional presence in Sweden and Belgium.
- Top 5% — Top 5% of all autonomous systems by reach and degree
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 17, 2002
- Last Changed
- March 04, 2026
- Last Seen
- April 28, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 11 / 11
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 117 760
- Largest IPv4 Prefix
- /17 (32 768 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇨🇿 Czechia (219 136 IPs), 🇸🇪 Sweden (256 IPs), 🇧🇪 Belgium (256 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 2 flagged IPs out of 117 760 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 14 networks exchanging traffic without transit
- Downstream Customers
- 24 downstreams buying transit
- Unclassified
- 1 unclassified BGP neighbor
- Degree
- 41 unique BGP neighbors
- Reach
- 33 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (11 total)
- 89.203.128.0/17 (32 768 addresses (/17 prefix))
- 82.202.64.0/18 (16 384 addresses (/18 prefix))
- 85.13.64.0/18 (16 384 addresses (/18 prefix))
- 213.235.128.0/18 (16 384 addresses (/18 prefix))
- 82.117.128.0/19 (8 192 addresses (/19 prefix))
- 195.146.96.0/19 (8 192 addresses (/19 prefix))
- 212.11.96.0/19 (8 192 addresses (/19 prefix))
- 81.19.32.0/20 (4 096 addresses (/20 prefix))
- 85.184.16.0/20 (4 096 addresses (/20 prefix))
- 131.117.192.0/21 (2 048 addresses (/21 prefix))
- 185.134.0.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (1 total)
- 2001:1a48::/32