$ query “AS3549” --type=asn → 1 result(s)

AS3549 · LEVEL3-AS3549

Global Crossing Ltd. S 50th St Phoenix AZ 85034 800.414.5028 ncc@gblx.net

AS3549 belongs to Global Crossing Ltd. S 50th St Phoenix AZ 85034… and is a major transit provider, registered in the United States since 2002. The system announces an impressive 5.0 million IPv4 addresses, including a /14, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in Argentina and the United Kingdom, and smaller footprints in 54 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #77 by Reach — Top 100 by customer cone size

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 28, 2002
Last Changed
May 10, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
630 / 245
IPv6 Prefixes (raw / aggregated)
29 / 12
IPv4 Addresses
5 023 232
Largest IPv4 Prefix
/14 (262 144 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (6 237 904 IPs), 🇦🇷 Argentina (361 456 IPs), 🇬🇧 United Kingdom (346 816 IPs) and 54 more
Prefix Changed
June 22, 2026

Reputation

Reputation
Good — 6 flagged IPs out of 5 023 232 total (0.00%)
Open Proxies
3 known open proxies in this network

Connectivity Summary

Upstream Providers
1 upstream providing transit
Peers
46 networks exchanging traffic without transit
Downstream Customers
289 downstreams buying transit
Unclassified
9 unclassified BGP neighbors
Degree
345 unique BGP neighbors
Reach
34 967 networks in customer cone

Upstream Providers (1)

  • AS3356 — LEVEL3 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (630 total)

  • 66.192.0.0/14 (262 144 addresses (/14 prefix))
  • 64.212.0.0/14 (262 144 addresses (/14 prefix))
  • 35.248.0.0/14 (262 144 addresses (/14 prefix))
  • 50.58.0.0/15 (131 072 addresses (/15 prefix))
  • 74.202.0.0/15 (131 072 addresses (/15 prefix))
  • 67.74.0.0/15 (131 072 addresses (/15 prefix))
  • 67.16.0.0/15 (131 072 addresses (/15 prefix))
  • 173.226.0.0/15 (131 072 addresses (/15 prefix))
  • 174.46.0.0/15 (131 072 addresses (/15 prefix))
  • 64.128.0.0/15 (131 072 addresses (/15 prefix))
  • 216.84.0.0/15 (131 072 addresses (/15 prefix))
  • 201.234.0.0/16 (65 536 addresses (/16 prefix))
  • 207.138.0.0/16 (65 536 addresses (/16 prefix))
  • 190.216.0.0/16 (65 536 addresses (/16 prefix))
  • 64.132.0.0/16 (65 536 addresses (/16 prefix))
  • 189.125.0.0/16 (65 536 addresses (/16 prefix))
  • 64.208.0.0/16 (65 536 addresses (/16 prefix))
  • 161.134.0.0/16 (65 536 addresses (/16 prefix))
  • 208.49.0.0/16 (65 536 addresses (/16 prefix))
  • 208.51.0.0/16 (65 536 addresses (/16 prefix))
  • 200.186.0.0/16 (65 536 addresses (/16 prefix))
  • 199.227.0.0/16 (65 536 addresses (/16 prefix))
  • 208.178.0.0/16 (65 536 addresses (/16 prefix))
  • 209.12.0.0/16 (65 536 addresses (/16 prefix))
  • 66.162.0.0/16 (65 536 addresses (/16 prefix))
  • 146.82.0.0/16 (65 536 addresses (/16 prefix))
  • 168.215.0.0/16 (65 536 addresses (/16 prefix))
  • 145.233.0.0/16 (65 536 addresses (/16 prefix))
  • 207.250.0.0/16 (65 536 addresses (/16 prefix))
  • 64.76.0.0/16 (65 536 addresses (/16 prefix))
  • 209.136.0.0/16 (65 536 addresses (/16 prefix))
  • 193.240.0.0/16 (65 536 addresses (/16 prefix))
  • 162.97.0.0/16 (65 536 addresses (/16 prefix))
  • 97.65.0.0/16 (65 536 addresses (/16 prefix))
  • 216.253.0.0/16 (65 536 addresses (/16 prefix))
  • 206.165.0.0/16 (65 536 addresses (/16 prefix))
  • 206.169.0.0/16 (65 536 addresses (/16 prefix))
  • 209.194.0.0/16 (65 536 addresses (/16 prefix))
  • 199.77.128.0/17 (32 768 addresses (/17 prefix))
  • 206.57.0.0/17 (32 768 addresses (/17 prefix))
  • 113.29.0.0/17 (32 768 addresses (/17 prefix))
  • 209.163.128.0/17 (32 768 addresses (/17 prefix))
  • 207.67.0.0/17 (32 768 addresses (/17 prefix))
  • 204.199.0.0/17 (32 768 addresses (/17 prefix))
  • 207.114.128.0/17 (32 768 addresses (/17 prefix))
  • 216.54.128.0/17 (32 768 addresses (/17 prefix))
  • 199.76.0.0/17 (32 768 addresses (/17 prefix))
  • 195.166.0.0/17 (32 768 addresses (/17 prefix))
  • 64.211.0.0/17 (32 768 addresses (/17 prefix))
  • 216.136.0.0/17 (32 768 addresses (/17 prefix))

IPv6 Prefixes (29 total)

  • 2a07:aa00::/29
  • 2001:13b0::/31
  • 2001:4870::/31
  • 2001:450::/32
  • 2803:5790::/32
  • 2804:4c0::/32
  • 2801:105::/44
  • 2001:13b2:8045::/48
  • 2801:16:6800::/48
  • 2801:1d5:d::/48
  • 2803:cae0:8020::/48
  • 2a05:6744::/48