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Autonomous System

AS3356

Level 3 Parent, LLC

Level 3 Parent, LLC United States 🌐 lumen.com
Announced IPs
27,436,544
CIDR prefixes
4,730
ASN
AS3356

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

58/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Multiple-origin (MOAS) routing anomaly −12
  • Isp allocation +5
  • Trust score 58 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

About Level 3 Communications

Level 3 Communications, Inc. was an American multinational telecommunications and internet service provider company headquartered in Broomfield, Colorado.

Founded
1985
Headquarters
Frankfurt
Industry
telecommunications
Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

⚠ 12 MOAS prefixes — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS3356 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
8.47.26.0/24 AS3356, AS23371 2026-07-18 12:37:44
8.29.116.0/24 AS80, AS3356 2026-07-18 12:37:44
8.45.18.0/24 AS3356, AS14184 2026-07-18 12:37:44
8.17.185.0/24 AS3356, AS399929 2026-07-18 12:37:44
0.0.0.0/0 AS3356, AS212271 2026-07-18 12:37:44
8.39.160.0/24 AS3356, AS395257 2026-07-18 12:37:44
205.140.226.0/24 AS203, AS3356 2026-07-18 12:37:44
198.136.150.0/24 AS3356, AS6461 2026-07-18 12:37:44
148.230.6.0/24 AS3356, AS3549 2026-07-18 06:07:42
161.199.26.0/24 AS3356, AS53423 2026-07-17 19:22:38
198.210.16.0/21 AS3356, AS27357 2026-07-17 19:22:38
192.231.114.0/23 AS3356, AS264372 2026-07-17 07:07:33

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 100+Tbps
Geographic scope Global
Traffic ratio Balanced
Peering policy Restrictive

Present at 3 internet exchanges: NAPAfrica IX Johannesburg: Peering, NAPAfrica IX Cape Town, UAE-IX: UAE-IX Peering LAN

Website ↗ Looking glass ↗

AS3356 — global IP footprint

Cities where AS3356 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
4.64.0.0/10 4.19M
3.2%
Level 3 Parent, LLC US Texas Houston
8.96.0.0/11 2.10M
0.0%
Level 3 Parent, LLC US — —
4.0.0.0/12 1.05M
2.4%
Level 3 Parent, LLC US Virginia Alexandria
4.48.0.0/12 1.05M
0.6%
Level 3 Parent, LLC US Pennsylvania Pittsburgh
4.80.0.0/12 1.05M
0.0%
— US — —
4.96.0.0/12 1.05M
0.0%
— US Ohio South Lebanon
8.80.0.0/12 1.05M
0.0%
Level 3 Parent, LLC US — —
4.24.0.0/13 524.3K
1.6%
Level 3 Parent, LLC US Florida Miami
4.40.0.0/13 524.3K
1.4%
Level 3 Parent, LLC US Texas Dallas
4.112.0.0/13 524.3K
0.0%
— US — —
8.56.0.0/13 524.3K
0.0%
Level 3 Parent, LLC US — —
8.72.0.0/13 524.3K
0.0%
Level 3 Parent, LLC US — —
8.200.0.0/13 524.3K
0.0%
Level 3 Parent, LLC US — —
8.248.0.0/13 524.3K
0.0%
Level 3 Parent, LLC US — —
4.20.0.0/14 262.1K
1.0%
Level 3 Parent, LLC US Georgia Decatur
4.44.0.0/14 262.1K
0.0%
— US — —
4.48.0.0/14 262.1K
0.0%
— US Pennsylvania Pittsburgh
4.60.0.0/14 262.1K
0.0%
— US — —
4.64.0.0/14 262.1K
0.0%
— US — —
4.72.0.0/14 262.1K
0.0%
— US — —
4.120.0.0/14 262.1K
0.0%
— US — —
8.52.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US Tennessee Memphis
8.56.0.0/14 262.1K
0.0%
— US — —
8.68.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
8.196.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
8.248.0.0/14 262.1K
0.0%
— US — —
67.24.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
204.160.0.0/14 262.1K
0.2%
Level 3 Parent, LLC US — —
4.6.0.0/15 131.1K
0.0%
— US Georgia Snellville
4.10.0.0/15 131.1K
0.0%
— US — —
4.12.0.0/15 131.1K
0.0%
— US — —
4.16.0.0/15 131.1K
2.5%
Level 3 Parent, LLC US Indiana Indpls
4.24.0.0/15 131.1K
0.0%
— US Maryland Baltimore
4.32.0.0/15 131.1K
0.5%
Level 3 Parent, LLC US Nevada Las Vegas
4.36.0.0/15 131.1K
2.3%
Level 3 Parent, LLC US Minnesota Faribault
4.40.0.0/15 131.1K
0.0%
— US — —
4.56.0.0/15 131.1K
0.0%
— US Texas Spring
4.76.0.0/15 131.1K
0.0%
— US — —
4.126.0.0/15 131.1K
0.0%
— US — —
8.0.0.0/15 131.1K
2.1%
Level 3 Parent, LLC US New York New York
8.50.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.54.0.0/15 131.1K
0.0%
— US — —
8.66.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.194.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.238.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US Louisiana Monroe
8.240.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.246.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.252.0.0/15 131.1K
0.0%
— US — —
64.152.0.0/15 131.1K
0.4%
Level 3 Parent, LLC US New York New York
198.112.0.0/15 131.1K
0.2%
Level 3 Parent, LLC US — —
205.130.0.0/15 131.1K
0.7%
Level 3 Parent, LLC US Pennsylvania Butler
206.32.0.0/15 131.1K
1.8%
Level 3 Parent, LLC US — —
206.242.0.0/15 131.1K
0.9%
Level 3 Parent, LLC US — —
4.0.0.0/16 65.5K
0.0%
— US Virginia Alexandria
4.5.0.0/16 65.5K
0.0%
— US — —
4.9.0.0/16 65.5K
0.0%
— US — —
4.17.0.0/16 65.5K
0.0%
— US Indiana Indpls
4.18.0.0/16 65.5K
1.3%
Level 3 Parent, LLC US Idaho Nampa
4.27.0.0/16 65.5K
0.0%
— US — —
4.29.0.0/16 65.5K
0.0%
— US — —
4.32.0.0/16 65.5K
0.0%
— US Nevada Las Vegas
4.38.0.0/16 65.5K
1.3%
Level 3 Parent, LLC US Nevada Las Vegas
4.43.0.0/16 65.5K
0.0%
— US Texas Fort Worth
4.52.0.0/16 65.5K
0.0%
— US — —
4.54.0.0/16 65.5K
0.0%
— US — —
4.58.0.0/16 65.5K
0.0%
— US Illinois Chicago
4.70.0.0/16 65.5K
0.0%
— US — —
4.124.0.0/16 65.5K
0.0%
— US — —
8.1.0.0/16 65.5K
0.0%
— US — —
8.13.0.0/16 65.5K
0.1%
Level 3 Parent, LLC US — —
8.16.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.32.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.50.0.0/16 65.5K
0.0%
— US — —
8.53.0.0/16 65.5K
0.0%
— US Florida Lehigh Acres
8.61.0.0/16 65.5K
0.0%
— US — —
8.63.0.0/16 65.5K
0.0%
— US — —
8.65.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.227.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Texas Houston
8.239.0.0/16 65.5K
0.0%
— US — —
8.254.0.0/16 65.5K
0.0%
— US — —
63.213.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US District of Columbia Washington
64.155.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Colorado Broomfield
65.58.0.0/16 65.5K
1.2%
Level 3 Parent, LLC US California Tustin
67.28.0.0/16 65.5K
0.6%
Level 3 Parent, LLC US Florida Altamonte Springs
67.31.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
131.119.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Colorado Longmont
156.139.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
192.233.0.0/16 65.5K
0.4%
Level 3 Parent, LLC US — —
192.239.0.0/16 65.5K
0.0%
— US Florida Miami
198.114.0.0/16 65.5K
0.3%
Level 3 Parent, LLC US — —
199.78.0.0/16 65.5K
0.3%
Level 3 Parent, LLC US — —
199.95.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
204.166.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Arkansas Ozark
204.198.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
205.182.0.0/16 65.5K
0.8%
Level 3 Parent, LLC US Pennsylvania Pittsburgh
205.224.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
205.226.0.0/16 65.5K
0.1%
Level 3 Parent, LLC US — —
206.33.0.0/16 65.5K
1.7%
Level 3 Parent, LLC US — —
206.240.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
207.121.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Texas Humble

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS3356 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
65.140.106.0/24 528,381 2026-07-18 11:59:50
66.162.136.0/24 73,162 2026-07-18 12:00:01
38.84.6.0/23 29,893 2026-07-18 11:59:23
67.133.180.0/24 27,738 2026-07-18 12:00:00
65.120.92.0/24 22,365 2026-07-18 11:59:23
64.193.84.0/22 21,021 2026-07-18 12:00:00
69.45.31.0/24 20,991 2026-07-18 12:00:00
64.193.88.0/24 20,987 2026-07-18 12:00:00
69.45.18.0/23 16,394 2026-07-18 11:59:50
8.51.0.0/18 15,879 2026-07-18 11:59:04
216.161.40.0/24 14,694 2026-07-18 10:52:00
65.121.54.0/24 12,736 2026-07-18 12:00:00
209.136.212.0/24 11,224 2026-07-18 12:00:00
149.37.1.0/24 9,516 2026-07-18 12:01:20
149.37.200.0/24 9,498 2026-07-18 12:01:20
66.112.106.0/24 9,490 2026-07-18 11:59:50
65.141.135.0/24 8,429 2026-07-18 12:00:00
65.144.177.0/24 8,424 2026-07-18 12:00:00
65.155.47.0/24 8,314 2026-07-18 11:59:23
209.201.88.0/24 8,272 2026-07-18 12:00:00
74.203.87.0/24 7,880 2026-07-18 11:59:51
74.203.92.0/24 7,873 2026-07-18 11:59:51
63.238.236.0/23 7,839 2026-07-18 11:59:50
65.144.133.0/24 7,835 2026-07-18 11:59:50
50.59.11.0/24 7,465 2026-07-18 11:59:50
206.192.79.0/24 7,447 2026-07-18 12:00:01
205.169.39.0/24 7,248 2026-07-18 11:59:50
169.159.192.0/21 6,878 2026-07-18 12:01:38
169.159.200.0/21 6,853 2026-07-18 12:01:38
66.193.104.0/24 6,826 2026-07-18 12:00:00
207.92.192.0/20 6,690 2026-07-18 11:59:46
65.153.51.0/24 6,583 2026-07-18 12:00:00
65.141.102.0/24 6,533 2026-07-18 12:00:00
63.151.19.0/24 6,432 2026-07-18 12:00:00
206.15.80.0/24 6,332 2026-07-18 11:59:50
65.122.114.0/24 6,082 2026-07-18 11:59:57
190.216.110.0/24 5,929 2026-06-24 02:02:54
65.140.60.0/24 5,759 2026-07-18 12:00:00
65.127.75.0/24 5,740 2026-07-18 12:00:00
189.125.129.0/24 5,619 2026-07-14 21:19:25
64.128.48.0/22 5,181 2026-07-18 11:59:50
63.147.148.0/24 5,031 2026-07-18 12:00:00
65.132.55.0/24 4,988 2026-07-18 11:59:56
200.196.71.0/24 4,948 2026-07-18 12:00:00
157.53.64.0/24 4,918 2026-07-18 12:00:00
189.125.130.0/23 4,916 2026-07-18 12:00:00
74.202.10.0/24 4,890 2026-07-18 11:59:50
74.202.11.0/24 4,880 2026-07-18 11:59:50
64.239.74.0/24 4,802 2026-07-01 16:55:41
65.153.212.0/24 4,795 2026-07-18 12:00:00

Showing top 50 of 3,812 announced prefixes by sample volume.

Frequently Asked Questions

What is AS3356?

AS3356 is an Autonomous System Number assigned to Level 3 Parent, LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS3356 announce?

AS3356 announces 27.44M IPv4 addresses distributed across 4,730 routed CIDR prefixes. The network is registered in United States.

Who operates AS3356?

AS3356 is operated by Level 3 Parent, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS3356 registered in?

AS3356 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 12:40:28 UTC
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