$ 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 110 592 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in the British Virgin Islands and Singapore, and smaller footprints in 41 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #56 by Reach — Top 100 by customer cone size
  • #11 by Degree — Top 100 by unique BGP neighbor count
  • #5 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
April 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
436 / 254
IPv6 Prefixes (raw / aggregated)
1 128 / 502
IPv4 Addresses
110 592
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇺🇸 United States (54 016 IPs), 🇻🇬 British Virgin Islands (22 784 IPs), 🇸🇬 Singapore (12 800 IPs) and 41 more
Prefix Changed
April 17, 2026

Reputation

Reputation
Fair — 1 066 flagged IPs out of 110 592 total (0.96%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
4 196 networks exchanging traffic without transit
Downstream Customers
190 downstreams buying transit
Unclassified
32 unclassified BGP neighbors
Degree
4 424 unique BGP neighbors
Reach
40 714 networks in customer cone

Upstream Providers (6)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS6461 — ZAYO-6461 (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS3491 — PCCWG-APAC-HK (Tier-1 transit)
  • AS7474 — OPTUSCOM-AS01-AU

Prefix Lists

IPv4 Prefixes (436 total)

  • 84.247.96.0/21 (2 048 addresses (/21 prefix))
  • 217.217.112.0/21 (2 048 addresses (/21 prefix))
  • 202.165.64.0/21 (2 048 addresses (/21 prefix))
  • 176.110.216.0/21 (2 048 addresses (/21 prefix))
  • 151.240.48.0/21 (2 048 addresses (/21 prefix))
  • 151.240.92.0/22 (1 024 addresses (/22 prefix))
  • 151.240.64.0/22 (1 024 addresses (/22 prefix))
  • 103.62.48.0/22 (1 024 addresses (/22 prefix))
  • 103.107.196.0/22 (1 024 addresses (/22 prefix))
  • 91.246.176.0/22 (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))
  • 116.90.72.0/22 (1 024 addresses (/22 prefix))
  • 139.5.232.0/22 (1 024 addresses (/22 prefix))
  • 151.240.56.0/22 (1 024 addresses (/22 prefix))
  • 103.1.212.0/22 (1 024 addresses (/22 prefix))
  • 188.240.216.0/22 (1 024 addresses (/22 prefix))
  • 203.10.96.0/22 (1 024 addresses (/22 prefix))
  • 84.247.92.0/22 (1 024 addresses (/22 prefix))
  • 195.210.124.0/22 (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))
  • 195.210.112.0/22 (1 024 addresses (/22 prefix))
  • 172.94.72.0/22 (1 024 addresses (/22 prefix))
  • 195.210.104.0/22 (1 024 addresses (/22 prefix))
  • 77.36.112.0/22 (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))
  • 176.112.80.0/22 (1 024 addresses (/22 prefix))
  • 193.36.220.0/22 (1 024 addresses (/22 prefix))
  • 151.240.104.0/22 (1 024 addresses (/22 prefix))
  • 45.121.208.0/22 (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))
  • 45.133.4.0/22 (1 024 addresses (/22 prefix))
  • 45.130.202.0/23 (512 addresses (/23 prefix))
  • 185.207.126.0/23 (512 addresses (/23 prefix))
  • 45.132.224.0/23 (512 addresses (/23 prefix))
  • 185.211.8.0/23 (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))
  • 185.248.0.0/23 (512 addresses (/23 prefix))
  • 188.240.10.0/23 (512 addresses (/23 prefix))
  • 46.173.252.0/23 (512 addresses (/23 prefix))
  • 194.5.82.0/23 (512 addresses (/23 prefix))
  • 194.61.40.0/23 (512 addresses (/23 prefix))
  • 64.64.98.0/23 (512 addresses (/23 prefix))
  • 194.233.100.0/23 (512 addresses (/23 prefix))
  • 5.62.22.0/23 (512 addresses (/23 prefix))
  • and 204 more

IPv6 Prefixes (1 128 total)

  • 2a11:53c0::/31
  • 2a0c:b6c0::/31
  • 2a0f:e384::/31
  • 2a11:53c4::/31
  • 2a0a:ce06::/32
  • 2a11:53c2::/32
  • 2a0f:2740::/32
  • 2a11:f881::/32
  • 2a0f:e383::/32
  • 2a11:f882::/32
  • 2a0e:4202::/32
  • 2a0e:d786::/32
  • 2606:f181::/32
  • 2402:5ac0::/32
  • 2a0f:31c1:f900::/40
  • 2404:b9c0:80::/43
  • 2404:b9c0:60::/43
  • 2404:b9c0:20::/43
  • 2a0f:31c1:c700::/43
  • 2404:b9c0:120::/44
  • 2404:b9c0:100::/44
  • 2401:3bc0:2000::/44
  • 2404:b9c0:f0::/44
  • 2404:b9c0:d0::/44
  • 2404:b9c0:4400::/44
  • 2404:b9c0:10::/44
  • 2401:3cc0:1800::/44
  • 2a0f:31c1:1300::/45
  • 2a0f:2742:1000::/46
  • 2a0e:4203:5000::/46
  • 2a0f:2741:3000::/46
  • 2a0f:2741:2000::/46
  • 2a0f:2741:1000::/46
  • 2a0f:2741:5000::/46
  • 2a0f:2741:6000::/46
  • 2a0e:4203:b000::/46
  • 2a0e:4203:a000::/46
  • 2a0e:4203:9000::/46
  • 2a0e:4203:8000::/46
  • 2a0f:2742::/46
  • 2a0e:4203:7000::/46
  • 2a0a:ce00:1000::/46
  • 2401:3cc0:24::/46
  • 2a0f:2742:2000::/46
  • 2a0f:2742:3000::/46
  • 2a0f:2742:4000::/46
  • 2a0f:2742:5000::/46
  • 2a0f:2742:6000::/46
  • 2a0f:2742:7000::/46
  • 2a0f:2742:8000::/46
  • and 452 more