$ query “AS137409” --type=asn → 1 result(s)

AS137409 · GSLNETWORKS-AS-AP

GSL Networks Pty LTD

AS137409 belongs to GSL Networks Pty LTD and is a major transit provider, based in Australia. The system announces a solid 123 136 IPv4 addresses, and supports IPv6. The bulk of its IP address space is in the United States, with additional presence in the British Virgin Islands and Singapore, and smaller footprints in 55 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #33 by Reach — Top 100 by customer cone size
  • #12 by Degree — Top 100 by unique BGP neighbor count
  • #1 in Australia — Top 10 by reach within country

Basic Information

Country
🇦🇺 Australia
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
484 / 288
IPv6 Prefixes (raw / aggregated)
1 137 / 508
IPv4 Addresses
123 136
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇺🇸 United States (53 760 IPs), 🇻🇬 British Virgin Islands (23 040 IPs), 🇸🇬 Singapore (13 312 IPs) and 55 more
Prefix Changed
June 22, 2026

Reputation

Reputation
Good — 245 flagged IPs out of 123 136 total (0.20%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
4 193 networks exchanging traffic without transit
Downstream Customers
190 downstreams buying transit
Unclassified
48 unclassified BGP neighbors
Degree
4 437 unique BGP neighbors
Reach
43 936 networks in customer cone

Upstream Providers (6)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — MFNX (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS3491 — PCCWG-AS (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (484 total)

  • 217.217.112.0/21 (2 048 addresses (/21 prefix))
  • 151.240.48.0/21 (2 048 addresses (/21 prefix))
  • 84.247.96.0/21 (2 048 addresses (/21 prefix))
  • 176.110.216.0/21 (2 048 addresses (/21 prefix))
  • 202.165.64.0/21 (2 048 addresses (/21 prefix))
  • 151.240.64.0/22 (1 024 addresses (/22 prefix))
  • 45.133.4.0/22 (1 024 addresses (/22 prefix))
  • 103.1.212.0/22 (1 024 addresses (/22 prefix))
  • 103.107.196.0/22 (1 024 addresses (/22 prefix))
  • 103.212.224.0/22 (1 024 addresses (/22 prefix))
  • 109.207.136.0/22 (1 024 addresses (/22 prefix))
  • 95.142.112.0/22 (1 024 addresses (/22 prefix))
  • 116.90.72.0/22 (1 024 addresses (/22 prefix))
  • 91.246.176.0/22 (1 024 addresses (/22 prefix))
  • 139.5.232.0/22 (1 024 addresses (/22 prefix))
  • 203.10.96.0/22 (1 024 addresses (/22 prefix))
  • 151.240.56.0/22 (1 024 addresses (/22 prefix))
  • 195.210.124.0/22 (1 024 addresses (/22 prefix))
  • 103.62.48.0/22 (1 024 addresses (/22 prefix))
  • 195.210.112.0/22 (1 024 addresses (/22 prefix))
  • 195.210.104.0/22 (1 024 addresses (/22 prefix))
  • 151.240.92.0/22 (1 024 addresses (/22 prefix))
  • 151.240.104.0/22 (1 024 addresses (/22 prefix))
  • 31.14.72.0/22 (1 024 addresses (/22 prefix))
  • 84.247.92.0/22 (1 024 addresses (/22 prefix))
  • 160.202.164.0/22 (1 024 addresses (/22 prefix))
  • 168.81.8.0/22 (1 024 addresses (/22 prefix))
  • 77.36.112.0/22 (1 024 addresses (/22 prefix))
  • 188.240.216.0/22 (1 024 addresses (/22 prefix))
  • 193.36.220.0/22 (1 024 addresses (/22 prefix))
  • 172.94.72.0/22 (1 024 addresses (/22 prefix))
  • 64.64.104.0/22 (1 024 addresses (/22 prefix))
  • 64.50.200.0/22 (1 024 addresses (/22 prefix))
  • 45.121.208.0/22 (1 024 addresses (/22 prefix))
  • 176.112.80.0/22 (1 024 addresses (/22 prefix))
  • 46.173.240.0/22 (1 024 addresses (/22 prefix))
  • 45.154.152.0/22 (1 024 addresses (/22 prefix))
  • 188.240.10.0/23 (512 addresses (/23 prefix))
  • 195.210.98.0/23 (512 addresses (/23 prefix))
  • 185.180.192.0/23 (512 addresses (/23 prefix))
  • 45.139.4.0/23 (512 addresses (/23 prefix))
  • 185.118.70.0/23 (512 addresses (/23 prefix))
  • 45.152.32.0/23 (512 addresses (/23 prefix))
  • 45.130.202.0/23 (512 addresses (/23 prefix))
  • 173.244.42.0/23 (512 addresses (/23 prefix))
  • 46.173.252.0/23 (512 addresses (/23 prefix))
  • 185.211.8.0/23 (512 addresses (/23 prefix))
  • 5.62.34.0/23 (512 addresses (/23 prefix))
  • 185.248.0.0/23 (512 addresses (/23 prefix))
  • 64.64.98.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (1 137 total)

  • 2a11:53c4::/31
  • 2a0f:e384::/31
  • 2a11:53c0::/31
  • 2a0e:4202::/32
  • 2606:f181::/32
  • 2a11:f881::/32
  • 2a0a:ce06::/32
  • 2a11:f882::/32
  • 2a0f:e383::/32
  • 2402:5ac0::/32
  • 2a11:53c2::/32
  • 2a0f:2740::/32
  • 2a0e:d786::/32
  • 2a0c:b6c1::/32
  • 2a0c:b6c0::/33
  • 2a0c:b6c0:8000::/34
  • 2a0f:31c1:f900::/40
  • 2a0f:31c1:c700::/43
  • 2404:b9c0:20::/43
  • 2404:b9c0:60::/43
  • 2404:b9c0:80::/43
  • 2404:b9c0:f0::/44
  • 2404:b9c0:d0::/44
  • 2404:b9c0:100::/44
  • 2401:3bc0:2000::/44
  • 2404:b9c0:120::/44
  • 2404:b9c0:10::/44
  • 2404:b9c0:4400::/44
  • 2401:3cc0:1800::/44
  • 2a0f:31c1:1300::/45
  • 2a0f:2742::/46
  • 2a0e:4203:3000::/46
  • 2a0f:2741:1000::/46
  • 2a0f:2741:3000::/46
  • 2a0f:2741:4000::/46
  • 2a0e:4203:b000::/46
  • 2a0e:4203:a000::/46
  • 2a0e:4203:9000::/46
  • 2a0e:4203:8000::/46
  • 2a0e:4203:7000::/46
  • 2a0f:2741:5000::/46
  • 2a0e:4203:6000::/46
  • 2a0f:2741:6000::/46
  • 2a0a:ce00:1000::/46
  • 2401:3cc0:24::/46
  • 2a0f:2742:1000::/46
  • 2a0f:2742:2000::/46
  • 2a0f:2742:3000::/46
  • 2a0f:2742:4000::/46
  • 2a0f:2742:5000::/46