$ query “AS20911” --type=asn → 1 result(s)

AS20911 · NETSURF-AS-BG

Net-Surf.net Ltd.

AS20911 belongs to Net-Surf.net Ltd. and is a residential access provider, based in Bulgaria since 2002. The system announces a respectable 36 608 IPv4 addresses. Its primary geographic footprint is in Bulgaria. No IPv6 support — it's 2026, just saying.

Basic Information

Country
🇧🇬 Bulgaria
Category
Internet Service Provider
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
February 04, 2002
Last Changed
March 04, 2026
Last Seen
September 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
177 / 25
IPv6 Prefixes (raw / aggregated)
0 / 0
IPv4 Addresses
36 608
Largest IPv4 Prefix
/18 (16 384 addresses)
Geolocated Countries
🇧🇬 Bulgaria (63 488 IPs)
Prefix Changed
April 01, 2026

Reputation

Reputation
Good — 3 flagged IPs out of 36 608 total (0.01%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
146 networks exchanging traffic without transit
Downstream Customers
1 downstream buying transit
Unclassified
1 unclassified BGP neighbor
Degree
154 unique BGP neighbors
Reach
1 network in customer cone

Upstream Providers (6)

Prefix Lists

IPv4 Prefixes (177 total)

  • 178.254.192.0/18 (16 384 addresses (/18 prefix))
  • 46.229.192.0/20 (4 096 addresses (/20 prefix))
  • 78.90.248.0/21 (2 048 addresses (/21 prefix))
  • 95.111.120.0/21 (2 048 addresses (/21 prefix))
  • 93.152.248.0/21 (2 048 addresses (/21 prefix))
  • 195.230.28.0/22 (1 024 addresses (/22 prefix))
  • 80.72.88.0/22 (1 024 addresses (/22 prefix))
  • 185.95.248.0/22 (1 024 addresses (/22 prefix))
  • 87.120.118.0/23 (512 addresses (/23 prefix))
  • 87.120.122.0/23 (512 addresses (/23 prefix))
  • 84.21.174.0/23 (512 addresses (/23 prefix))
  • 87.121.70.0/23 (512 addresses (/23 prefix))
  • 45.90.90.0/23 (512 addresses (/23 prefix))
  • 93.123.26.0/23 (512 addresses (/23 prefix))
  • 93.152.228.0/23 (512 addresses (/23 prefix))
  • 193.42.34.0/23 (512 addresses (/23 prefix))
  • 94.156.162.0/23 (512 addresses (/23 prefix))
  • 78.128.36.0/23 (512 addresses (/23 prefix))
  • 92.249.50.0/24 (256 addresses (/24 prefix))
  • 95.214.27.0/24 (256 addresses (/24 prefix))
  • 87.120.124.0/24 (256 addresses (/24 prefix))
  • 79.124.9.0/24 (256 addresses (/24 prefix))
  • 194.55.186.0/24 (256 addresses (/24 prefix))
  • 194.169.175.0/24 (256 addresses (/24 prefix))
  • 78.128.40.0/24 (256 addresses (/24 prefix))