$ query “AS15958” --type=asn → 1 result(s)
AS15958 · CETIN-DOO-AS
CETIN Ltd. Belgrade
AS15958 is owned by CETIN Ltd. Belgrade and is a mid-size transit provider, registered in Serbia. The system announces a respectable 73 728 IPv4 addresses, including a /16, and supports IPv6. Its primary geographic footprint is in Serbia, with additional presence in Montenegro.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- #6 in Serbia — Top 10 by reach within country
Basic Information
- Country
- 🇷🇸 Serbia
- Category
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Last Changed
- March 04, 2026
- Last Seen
- April 30, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 12 / 3
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 73 728
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇷🇸 Serbia (147 456 IPs), 🇲🇪 Montenegro (256 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 73 728 total (0.00%)
- Open Proxies
- 1 known open proxies in this network
Connectivity Summary
- Upstream Providers
- 7 upstreams providing transit
- Peers
- 150 networks exchanging traffic without transit
- Downstream Customers
- 23 downstreams buying transit
- Unclassified
- 5 unclassified BGP neighbors
- Degree
- 185 unique BGP neighbors
- Reach
- 35 networks in customer cone
Upstream Providers (7)
Prefix Lists
IPv4 Prefixes (12 total)
- 109.245.0.0/16 (65 536 addresses (/16 prefix))
- 109.106.224.0/20 (4 096 addresses (/20 prefix))
- 217.65.192.0/20 (4 096 addresses (/20 prefix))
IPv6 Prefixes (1 total)
- 2a01:ac80::/32