$ query “AS44143” --type=asn → 1 result(s)
AS44143 · A1SERBIA-AS
A1 Srbija d.o.o. Beograd
AS44143 is operated by A1 Srbija d.o.o. Beograd and serves as a residential access provider, established in Serbia in 2007. The system announces a respectable 20 480 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Serbia, with additional presence in Australia.
Basic Information
- Country
- 🇷🇸 Serbia
- Category
- Internet Service Provider
- Network Role
- Access Provider
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- November 23, 2007
- Last Changed
- April 25, 2026
- Last Seen
- May 18, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 14 / 10
- IPv6 Prefixes (raw / aggregated)
- 3 / 1
- IPv4 Addresses
- 20 480
- Largest IPv4 Prefix
- /20 (4 096 addresses)
- Largest IPv6 Prefix
- /29
- Geolocated Countries
- 🇷🇸 Serbia (30 720 IPs), 🇦🇺 Australia (2 048 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 20 480 total (0.00%)
Connectivity Summary
- Upstream Providers
- 1 upstream providing transit
- Peers
- 2 networks exchanging traffic without transit
- Downstream Customers
- 3 downstreams buying transit
- Degree
- 6 unique BGP neighbors
- Reach
- 3 networks in customer cone
Upstream Providers (1)
- AS8447 — A1TELEKOM-AT
Prefix Lists
IPv4 Prefixes (14 total)
- 77.243.16.0/20 (4 096 addresses (/20 prefix))
- 188.120.96.0/20 (4 096 addresses (/20 prefix))
- 37.19.104.0/21 (2 048 addresses (/21 prefix))
- 95.86.48.0/21 (2 048 addresses (/21 prefix))
- 188.120.112.0/21 (2 048 addresses (/21 prefix))
- 198.143.176.0/21 (2 048 addresses (/21 prefix))
- 95.86.4.0/22 (1 024 addresses (/22 prefix))
- 95.86.8.0/22 (1 024 addresses (/22 prefix))
- 95.86.60.0/22 (1 024 addresses (/22 prefix))
- 185.37.24.0/22 (1 024 addresses (/22 prefix))
IPv6 Prefixes (3 total)
- 2a00:61c0::/29