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

AS137409 · GSLNETWORKS-AS-AP

GSL Networks Pty LTD

AS137409 is operated by GSL Networks Pty LTD and serves as a major transit provider, registered in Australia. The system announces a solid 114 432 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 52 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #57 by Reach — Top 100 by customer cone size
  • #11 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
May 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
451 / 265
IPv6 Prefixes (raw / aggregated)
1 136 / 505
IPv4 Addresses
114 432
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/31
Geolocated Countries
🇺🇸 United States (53 504 IPs), 🇻🇬 British Virgin Islands (22 784 IPs), 🇸🇬 Singapore (12 800 IPs) and 52 more
Prefix Changed
May 19, 2026

Reputation

Reputation
Shady — 1 149 flagged IPs out of 114 432 total (1.00%)

Connectivity Summary

Upstream Providers
6 upstreams providing transit
Peers
4 190 networks exchanging traffic without transit
Downstream Customers
183 downstreams buying transit
Unclassified
39 unclassified BGP neighbors
Degree
4 418 unique BGP neighbors
Reach
48 933 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 (451 total)

  • 176.110.216.0/21 (2 048 addresses (/21 prefix))
  • 84.247.96.0/21 (2 048 addresses (/21 prefix))
  • 202.165.64.0/21 (2 048 addresses (/21 prefix))
  • 151.240.48.0/21 (2 048 addresses (/21 prefix))
  • 217.217.112.0/21 (2 048 addresses (/21 prefix))
  • 116.90.72.0/22 (1 024 addresses (/22 prefix))
  • 151.240.92.0/22 (1 024 addresses (/22 prefix))
  • 109.207.136.0/22 (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))
  • 103.107.196.0/22 (1 024 addresses (/22 prefix))
  • 151.240.56.0/22 (1 024 addresses (/22 prefix))
  • 151.240.64.0/22 (1 024 addresses (/22 prefix))
  • 203.10.96.0/22 (1 024 addresses (/22 prefix))
  • 103.62.48.0/22 (1 024 addresses (/22 prefix))
  • 195.210.124.0/22 (1 024 addresses (/22 prefix))
  • 103.1.212.0/22 (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))
  • 84.247.92.0/22 (1 024 addresses (/22 prefix))
  • 103.212.224.0/22 (1 024 addresses (/22 prefix))
  • 151.240.104.0/22 (1 024 addresses (/22 prefix))
  • 77.36.112.0/22 (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))
  • 172.94.72.0/22 (1 024 addresses (/22 prefix))
  • 193.36.220.0/22 (1 024 addresses (/22 prefix))
  • 188.240.216.0/22 (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))
  • 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))
  • 45.121.208.0/22 (1 024 addresses (/22 prefix))
  • 176.112.80.0/22 (1 024 addresses (/22 prefix))
  • 194.61.40.0/23 (512 addresses (/23 prefix))
  • 195.210.98.0/23 (512 addresses (/23 prefix))
  • 45.130.202.0/23 (512 addresses (/23 prefix))
  • 173.244.32.0/23 (512 addresses (/23 prefix))
  • 45.132.224.0/23 (512 addresses (/23 prefix))
  • 185.118.70.0/23 (512 addresses (/23 prefix))
  • 45.139.4.0/23 (512 addresses (/23 prefix))
  • 173.239.220.0/23 (512 addresses (/23 prefix))
  • 45.152.32.0/23 (512 addresses (/23 prefix))
  • 185.207.126.0/23 (512 addresses (/23 prefix))
  • 185.211.8.0/23 (512 addresses (/23 prefix))
  • 46.173.252.0/23 (512 addresses (/23 prefix))
  • 172.94.76.0/23 (512 addresses (/23 prefix))
  • 185.248.0.0/23 (512 addresses (/23 prefix))
  • 64.64.98.0/23 (512 addresses (/23 prefix))

IPv6 Prefixes (1 136 total)

  • 2a0f:e384::/31
  • 2a11:53c4::/31
  • 2a11:53c0::/31
  • 2a0c:b6c0::/31
  • 2a0e:4202::/32
  • 2a0e:d786::/32
  • 2a0f:e383::/32
  • 2a11:f881::/32
  • 2a0a:ce06::/32
  • 2a11:53c2::/32
  • 2a11:f882::/32
  • 2a0f:2740::/32
  • 2402:5ac0::/32
  • 2606:f181::/32
  • 2a0f:31c1:f900::/40
  • 2404:b9c0:20::/43
  • 2404:b9c0:60::/43
  • 2404:b9c0:80::/43
  • 2a0f:31c1:c700::/43
  • 2404:b9c0:120::/44
  • 2401:3bc0:2000::/44
  • 2401:3cc0:1800::/44
  • 2404:b9c0:10::/44
  • 2404:b9c0:d0::/44
  • 2404:b9c0:f0::/44
  • 2404:b9c0:100::/44
  • 2404:b9c0:4400::/44
  • 2a0f:31c1:1300::/45
  • 2a07:e342::/46
  • 2a0e:4203:5000::/46
  • 2a0f:31c1:c720::/46
  • 2401:3cc0:24::/46
  • 2a0f:2741:1000::/46
  • 2a0f:2741:2000::/46
  • 2a0f:2741:3000::/46
  • 2a0e:4203:b000::/46
  • 2a0e:4203:a000::/46
  • 2a0e:4203:9000::/46
  • 2a0e:4203:8000::/46
  • 2a0f:2741:4000::/46
  • 2a0e:4203:7000::/46
  • 2a0f:2741:5000::/46
  • 2a0f:2741:6000::/46
  • 2a0f:2742::/46
  • 2a0f:2742:1000::/46
  • 2a0f:2742:2000::/46
  • 2401:3bc0:100c::/46
  • 2a0f:2742:3000::/46
  • 2a0f:2742:4000::/46
  • 2a0f:2742:5000::/46