$ query “AS28725” --type=asn → 1 result(s)
AS28725 — CETIN-AS
CETIN a.s.
AS28725 is a mid-size transit provider run by CETIN a.s., established in Czechia in 2003. The network announces a solid 133 888 IPv4 addresses, including a /15. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #10 in Czechia — Top 10 by reach within country
Basic Information
- Country
- 🇨🇿 Czechia
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- February 10, 2003
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 7 / 5
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 133 888
- Largest IPv4 Prefix
- /15 (131 072 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇨🇿 CZ (6 IPs), 🇨🇭 CH (1 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 133 888 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 149 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 32 downstream autonomous systems buying transit
- Degree
- 190 unique BGP neighbors (providers + customers + peers)
- Reach
- 60 — customer cone size measuring network influence
- Degree Rank
- #702
- Reach Rank
- #1 404
- Country Rank
- #10
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (7 total)
- 85.162.0.0/15 (131 072 addresses)
- 194.50.64.0/22 (1 024 addresses)
- 194.147.12.0/22 (1 024 addresses)
- 185.218.92.0/23 (512 addresses)
- 136.238.226.0/24 (256 addresses)
IPv6 Prefixes (2 total)
- 2a07:1f40::/29
- 2a0b:bb40::/32