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

AS3549 · LVLT-3549

Level 3 Parent LLC

AS3549 is run by Level 3 Parent LLC and is a major transit provider, established in the United States in 2000. The system announces an impressive 5.0 million IPv4 addresses, including a /14, and supports IPv6. The bulk of its IP address space is in the United States, with additional presence in Argentina and the United Kingdom, and smaller footprints in 54 additional countries. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #5 by Reach — Top 100 by customer cone size
  • #76 by Degree — Top 100 by unique BGP neighbor count
  • #4 in United States — Top 10 by reach within country

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 21, 2000
Last Changed
March 04, 2026
Last Seen
April 18, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
636 / 246
IPv6 Prefixes (raw / aggregated)
26 / 13
IPv4 Addresses
5 031 168
Largest IPv4 Prefix
/14 (262 144 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (6 246 096 IPs), 🇦🇷 Argentina (360 656 IPs), 🇬🇧 United Kingdom (346 816 IPs) and 54 more
Prefix Changed
April 18, 2026

Reputation

Reputation
Good — 12 flagged IPs out of 5 031 168 total (0.00%)
Open Proxies
5 known open proxies in this network

Connectivity Summary

Upstream Providers
1 upstream providing transit
Peers
66 networks exchanging traffic without transit
Downstream Customers
1 655 downstreams buying transit
Unclassified
9 unclassified BGP neighbors
Degree
1 731 unique BGP neighbors
Reach
60 459 networks in customer cone

Upstream Providers (1)

  • AS3356 — LEVEL3 (Tier-1 transit)

Prefix Lists

IPv4 Prefixes (636 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))
  • 216.84.0.0/15 (131 072 addresses (/15 prefix))
  • 173.226.0.0/15 (131 072 addresses (/15 prefix))
  • 67.74.0.0/15 (131 072 addresses (/15 prefix))
  • 174.46.0.0/15 (131 072 addresses (/15 prefix))
  • 67.16.0.0/15 (131 072 addresses (/15 prefix))
  • 74.202.0.0/15 (131 072 addresses (/15 prefix))
  • 64.128.0.0/15 (131 072 addresses (/15 prefix))
  • 50.58.0.0/15 (131 072 addresses (/15 prefix))
  • 208.49.0.0/16 (65 536 addresses (/16 prefix))
  • 146.82.0.0/16 (65 536 addresses (/16 prefix))
  • 64.76.0.0/16 (65 536 addresses (/16 prefix))
  • 201.234.0.0/16 (65 536 addresses (/16 prefix))
  • 64.132.0.0/16 (65 536 addresses (/16 prefix))
  • 168.215.0.0/16 (65 536 addresses (/16 prefix))
  • 64.208.0.0/16 (65 536 addresses (/16 prefix))
  • 207.250.0.0/16 (65 536 addresses (/16 prefix))
  • 208.51.0.0/16 (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))
  • 199.227.0.0/16 (65 536 addresses (/16 prefix))
  • 161.134.0.0/16 (65 536 addresses (/16 prefix))
  • 193.240.0.0/16 (65 536 addresses (/16 prefix))
  • 66.162.0.0/16 (65 536 addresses (/16 prefix))
  • 207.138.0.0/16 (65 536 addresses (/16 prefix))
  • 145.233.0.0/16 (65 536 addresses (/16 prefix))
  • 162.97.0.0/16 (65 536 addresses (/16 prefix))
  • 190.216.0.0/16 (65 536 addresses (/16 prefix))
  • 209.136.0.0/16 (65 536 addresses (/16 prefix))
  • 189.125.0.0/16 (65 536 addresses (/16 prefix))
  • 97.65.0.0/16 (65 536 addresses (/16 prefix))
  • 200.186.0.0/16 (65 536 addresses (/16 prefix))
  • 206.169.0.0/16 (65 536 addresses (/16 prefix))
  • 216.253.0.0/16 (65 536 addresses (/16 prefix))
  • 209.194.0.0/16 (65 536 addresses (/16 prefix))
  • 206.165.0.0/16 (65 536 addresses (/16 prefix))
  • 64.211.0.0/17 (32 768 addresses (/17 prefix))
  • 199.77.128.0/17 (32 768 addresses (/17 prefix))
  • 206.57.0.0/17 (32 768 addresses (/17 prefix))
  • 217.156.128.0/17 (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))
  • 195.166.0.0/17 (32 768 addresses (/17 prefix))
  • 216.54.128.0/17 (32 768 addresses (/17 prefix))
  • 204.199.0.0/17 (32 768 addresses (/17 prefix))
  • 207.67.0.0/17 (32 768 addresses (/17 prefix))
  • 207.114.128.0/17 (32 768 addresses (/17 prefix))
  • 199.76.0.0/17 (32 768 addresses (/17 prefix))
  • and 196 more

IPv6 Prefixes (26 total)

  • 2a07:aa00::/29
  • 2001:13b0::/31
  • 2001:4870::/31
  • 2001:450::/32
  • 2804:4c0::/32
  • 2803:5790::/32
  • 2801:105::/44
  • 2801:1d5:d::/48
  • 2801:16:6800::/48
  • 2803:cae0:8020::/48
  • 2620:11b:e080::/48
  • 2a05:6744::/48
  • 2001:13b2:8045::/48