$ query “AS3356” --type=asn → 1 result(s)

AS3356 · LEVEL3

Level 3 Parent LLC

AS3356 belongs to Level 3 Parent LLC and is a Tier-1 transit provider, established in the United States in 2000. The system announces a whopping 28.9 million IPv4 addresses (0.78% of routable IPv4 space), including a /9, and supports IPv6. Its primary geographic footprint is in the United States, with additional presence in the United Kingdom and Colombia, and smaller footprints in 63 additional countries. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Space Overlord — Over 10 million IPv4 addresses
  • #1 by Reach — Top 100 by customer cone size
  • #4 by Degree — Top 100 by unique BGP neighbor count
  • #1 in United States — Top 10 by reach within country

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Tier-1 Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
March 10, 2000
Last Changed
October 01, 2026
Last Seen
October 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 038 / 776
IPv6 Prefixes (raw / aggregated)
128 / 45
IPv4 Addresses
28 862 464
Largest IPv4 Prefix
/9 (8 388 608 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇺🇸 United States (28 035 536 IPs), 🇬🇧 United Kingdom (361 040 IPs), 🇨🇴 Colombia (61 152 IPs) and 63 more
Prefix Changed
October 11, 2026

Reputation

Reputation
Good — 232 flagged IPs out of 28 862 464 total (0.00%)
Open Proxies
1 known open proxies in this network

Connectivity Summary

Peers
70 networks exchanging traffic without transit
Downstream Customers
6 468 downstreams buying transit
Unclassified
157 unclassified BGP neighbors
Degree
6 695 unique BGP neighbors
Reach
56 627 networks in customer cone

Prefix Lists

IPv4 Prefixes (1 038 total)

  • 4.0.0.0/9 (8 388 608 addresses (/9 prefix))
  • 8.0.0.0/9 (8 388 608 addresses (/9 prefix))
  • 8.192.0.0/12 (1 048 576 addresses (/12 prefix))
  • 8.240.0.0/12 (1 048 576 addresses (/12 prefix))
  • 63.208.0.0/13 (524 288 addresses (/13 prefix))
  • 64.152.0.0/13 (524 288 addresses (/13 prefix))
  • 67.24.0.0/13 (524 288 addresses (/13 prefix))
  • 204.160.0.0/13 (524 288 addresses (/13 prefix))
  • 8.224.0.0/14 (262 144 addresses (/14 prefix))
  • 8.236.0.0/14 (262 144 addresses (/14 prefix))
  • 64.192.0.0/14 (262 144 addresses (/14 prefix))
  • 65.56.0.0/14 (262 144 addresses (/14 prefix))
  • 65.88.0.0/14 (262 144 addresses (/14 prefix))
  • 67.72.0.0/14 (262 144 addresses (/14 prefix))
  • 67.96.0.0/14 (262 144 addresses (/14 prefix))
  • 198.76.0.0/14 (262 144 addresses (/14 prefix))
  • 198.92.0.0/14 (262 144 addresses (/14 prefix))
  • 198.112.0.0/14 (262 144 addresses (/14 prefix))
  • 199.92.0.0/14 (262 144 addresses (/14 prefix))
  • 205.128.0.0/14 (262 144 addresses (/14 prefix))
  • 205.180.0.0/14 (262 144 addresses (/14 prefix))
  • 205.224.0.0/14 (262 144 addresses (/14 prefix))
  • 206.32.0.0/14 (262 144 addresses (/14 prefix))
  • 206.240.0.0/14 (262 144 addresses (/14 prefix))
  • 207.120.0.0/14 (262 144 addresses (/14 prefix))
  • 209.244.0.0/14 (262 144 addresses (/14 prefix))
  • 216.140.0.0/14 (262 144 addresses (/14 prefix))
  • 69.44.0.0/15 (131 072 addresses (/15 prefix))
  • 72.236.0.0/15 (131 072 addresses (/15 prefix))
  • 199.76.0.0/15 (131 072 addresses (/15 prefix))
  • 204.198.0.0/15 (131 072 addresses (/15 prefix))
  • 62.67.0.0/16 (65 536 addresses (/16 prefix))
  • 64.200.0.0/16 (65 536 addresses (/16 prefix))
  • 65.77.0.0/16 (65 536 addresses (/16 prefix))
  • 131.119.0.0/16 (65 536 addresses (/16 prefix))
  • 156.139.0.0/16 (65 536 addresses (/16 prefix))
  • 166.90.0.0/16 (65 536 addresses (/16 prefix))
  • 171.75.0.0/16 (65 536 addresses (/16 prefix))
  • 192.2.0.0/16 (65 536 addresses (/16 prefix))
  • 192.216.0.0/16 (65 536 addresses (/16 prefix))
  • 192.221.0.0/16 (65 536 addresses (/16 prefix))
  • 192.233.0.0/16 (65 536 addresses (/16 prefix))
  • 198.31.0.0/16 (65 536 addresses (/16 prefix))
  • 199.75.0.0/16 (65 536 addresses (/16 prefix))
  • 199.78.0.0/16 (65 536 addresses (/16 prefix))
  • 207.83.0.0/16 (65 536 addresses (/16 prefix))
  • 207.227.0.0/16 (65 536 addresses (/16 prefix))
  • 209.0.0.0/16 (65 536 addresses (/16 prefix))
  • 209.84.0.0/16 (65 536 addresses (/16 prefix))
  • 216.202.0.0/16 (65 536 addresses (/16 prefix))

IPv6 Prefixes (128 total)

  • 2a10:2780::/29
  • 2001:13b2::/31
  • 2001:13b4::/32
  • 2001:1900::/32
  • 2001:4c08::/32
  • 2401:f6e0::/32
  • 2606:840::/32
  • 2806:281::/32
  • 2a05:8943::/32
  • 2a05:8944::/32
  • 2c0f:f7f8::/32
  • 2620:11b:e000::/40
  • 2602:2f4::/44
  • 2620:12c:3000::/44
  • 2620:13d:2060::/46
  • 2a07:aa00:8c::/46
  • 2620:130:800a::/47
  • 2a07:aa00:a::/47
  • 2a07:aa00:86::/47
  • 2a07:aa00:92::/47
  • 2a07:aa00:94::/47
  • 2001:428:3816::/48
  • 2001:428:5805::/48
  • 2001:428:6400::/48
  • 2001:13b0:8013::/48
  • 2001:13b0:8015::/48
  • 2001:13b0:8021::/48
  • 2001:13b0:8029::/48
  • 2001:13b0:a031::/48
  • 2001:13b0:a301::/48
  • 2001:13b0:b900::/48
  • 2001:13b0:c000::/48
  • 2620:7e:30e0::/48
  • 2620:a9:4000::/48
  • 2620:b0:4000::/48
  • 2620:123:d001::/48
  • 2620:13d:d01c::/48
  • 2803:3250:eab4::/48
  • 2a06:6540:2002::/48
  • 2a06:6541:2002::/48
  • 2a07:aa00:8::/48
  • 2a07:aa00:f::/48
  • 2a07:aa00:84::/48
  • 2a07:aa00:91::/48
  • 2a07:aa00:96::/48