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Autonomous System

AS3356

Level 3 Parent, LLC

Level 3 Parent, LLC United States 🌐 lumen.com
Announced IPs
27,410,941
CIDR prefixes
4,429
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
  • Active-threat / abuse risk −12
  • Isp allocation +5
  • Trust score 58 / 100

Experimental · trust-vectors model v1.3.0 — 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 industry
Official website ↗ Summary from Wikipedia, CC BY-SA 4.0 · Data from Wikidata

⚠ 19 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)
8.39.88.0/24 AS3356, AS201935 2026-11-11 15:53:52
8.47.26.0/24 AS3356, AS23371 2026-11-11 15:53:52
8.29.116.0/24 AS80, AS3356 2026-11-11 15:53:52
8.45.18.0/24 AS3356, AS14184 2026-11-11 15:53:52
198.136.150.0/24 AS3356, AS6461 2026-11-11 15:53:52
64.9.97.0/24 AS3356, AS10753 2026-11-11 15:53:52
8.23.90.0/24 AS80, AS3356 2026-11-11 15:53:52
192.203.132.0/24 AS3356, AS398756 2026-11-11 15:53:52
8.236.0.0/15 AS3356, AS396982 2026-11-11 15:53:52
8.17.185.0/24 AS3356, AS399929 2026-11-11 15:53:52
8.19.108.0/24 AS3356, AS400733 2026-11-11 15:53:52
8.44.137.0/24 AS3356, AS395230 2026-11-11 15:53:52
74.117.190.0/24 AS3356, AS33059 2026-11-11 15:53:52
8.39.160.0/24 AS3356, AS395257 2026-11-11 15:53:52
167.246.59.0/24 AS3356, AS22808 2026-11-11 15:53:52

Showing the 15 most recently detected of 19 MOAS prefixes. Many multi-origin prefixes on large networks are benign (anycast); see all MOAS anomalies.

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 ↗

Web3 footprint

AS3356 hosts 1 observed decentralized-network node across 1 network. It’s a neutral signal — it does not affect the reputation score. See the full web3 node map.

Ξ Ethereum 1

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
4.96.0.0/11 2.10M
0.6%
Level 3 Parent, LLC US Ohio Columbus
8.96.0.0/11 2.10M
0.0%
Level 3 Parent, LLC US — —
4.0.0.0/12 1.05M
6.1%
Level 3 Parent, LLC US Georgia Atlanta
4.48.0.0/12 1.05M
1.6%
Level 3 Parent, LLC US Pennsylvania Kittanning
4.80.0.0/12 1.05M
30.6%
Level 3 Parent, LLC US — —
4.96.0.0/12 1.05M
0.1%
Level 3 Parent, LLC US Ohio Columbus
8.80.0.0/12 1.05M
0.0%
Level 3 Parent, LLC US — —
4.24.0.0/13 524.3K
4.4%
Level 3 Parent, LLC US New York Binghamton
4.40.0.0/13 524.3K
3.1%
Level 3 Parent, LLC US Texas Dallas
4.64.0.0/13 524.3K
2.2%
Level 3 Parent, LLC US New York New York
4.112.0.0/13 524.3K
0.0%
Level 3 Parent, LLC 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
3.4%
Level 3 Parent, LLC US Utah North Salt Lake
4.44.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
4.48.0.0/14 262.1K
0.4%
Level 3 Parent, LLC US Pennsylvania Kittanning
4.60.0.0/14 262.1K
1.7%
Level 3 Parent, LLC US — —
4.64.0.0/14 262.1K
0.2%
Level 3 Parent, LLC US — —
4.76.0.0/14 262.1K
4.0%
Level 3 Parent, LLC US Texas Houston
4.120.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
8.52.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US Georgia Morrow
8.56.0.0/14 262.1K
0.0%
Level 3 Parent, LLC 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 — —
67.24.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
204.160.0.0/14 262.1K
0.0%
Level 3 Parent, LLC US — —
4.12.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
4.16.0.0/15 131.1K
7.5%
Level 3 Parent, LLC US District of Columbia Washington
4.22.0.0/15 131.1K
3.1%
Level 3 Parent, LLC US Florida Bowling Green
4.32.0.0/15 131.1K
1.6%
Level 3 Parent, LLC US Nevada Las Vegas
4.36.0.0/15 131.1K
7.3%
Level 3 Parent, LLC US Arizona Tucson
4.40.0.0/15 131.1K
5.3%
Level 3 Parent, LLC US — —
4.56.0.0/15 131.1K
0.1%
Level 3 Parent, LLC US Texas Conroe
4.72.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
4.126.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.0.0.0/15 131.1K
5.4%
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%
Level 3 Parent, LLC US — —
8.66.0.0/15 131.1K
0.0%
Level 3 Parent, LLC US — —
8.70.0.0/15 131.1K
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 — —
64.152.0.0/15 131.1K
1.1%
Level 3 Parent, LLC US New York New York
198.112.0.0/15 131.1K
0.5%
Level 3 Parent, LLC US — —
205.130.0.0/15 131.1K
1.8%
Level 3 Parent, LLC US Maryland Oxon Hill
206.32.0.0/15 131.1K
3.5%
Level 3 Parent, LLC US — —
206.242.0.0/15 131.1K
1.9%
Level 3 Parent, LLC US — —
4.0.0.0/16 65.5K
2.7%
Level 3 Parent, LLC US — —
4.3.0.0/16 65.5K
5.0%
Level 3 Parent, LLC US — —
4.5.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.6.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.9.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.10.0.0/16 65.5K
12.4%
Level 3 Parent, LLC US — —
4.17.0.0/16 65.5K
4.2%
Level 3 Parent, LLC US District of Columbia Washington
4.18.0.0/16 65.5K
4.2%
Level 3 Parent, LLC US Washington Spokane
4.21.0.0/16 65.5K
4.2%
Level 3 Parent, LLC US Georgia Atlanta
4.24.0.0/16 65.5K
7.8%
Level 3 Parent, LLC US — —
4.27.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.29.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.32.0.0/16 65.5K
0.7%
Level 3 Parent, LLC US Nevada Las Vegas
4.52.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.54.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.58.0.0/16 65.5K
0.6%
Level 3 Parent, LLC US Illinois Chicago
4.70.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.74.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.77.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
4.124.0.0/16 65.5K
16.6%
Level 3 Parent, LLC US — —
8.1.0.0/16 65.5K
0.0%
Level 3 Parent, LLC 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%
Level 3 Parent, LLC US — —
8.53.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Florida Fort Myers
8.61.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.63.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.65.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.69.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
8.227.0.0/16 65.5K
0.1%
Level 3 Parent, LLC US South Carolina Lancaster
8.239.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US — —
63.213.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Illinois Oak Park
64.155.0.0/16 65.5K
0.0%
Level 3 Parent, LLC US Colorado Denver
65.58.0.0/16 65.5K
2.9%
Level 3 Parent, LLC US California Irvine
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 Arizona Goodyear
156.139.0.0/16 65.5K
0.2%
Level 3 Parent, LLC US — —
192.2.0.0/16 65.5K
0.0%
Level 3 Parent, LLC GB — —
192.233.0.0/16 65.5K
0.9%
Level 3 Parent, LLC US — —
192.239.0.0/16 65.5K
1.0%
Level 3 Parent, LLC US — —
198.114.0.0/16 65.5K
0.5%
Level 3 Parent, LLC US — —
199.78.0.0/16 65.5K
0.8%
Level 3 Parent, LLC US — —
199.95.0.0/16 65.5K
1.3%
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
1.7%
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
0.3%
Level 3 Parent, LLC US — —

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
65.144.133.0/24 1,404,720 2026-11-11 14:48:58
63.238.236.0/23 1,398,421 2026-11-11 14:48:58
65.140.106.0/24 553,072 2026-11-11 14:48:58
64.30.37.0/24 254,480 2026-11-11 14:48:58
8.51.0.0/18 205,872 2026-11-11 14:48:53
216.161.40.0/24 129,972 2026-11-11 14:47:36
66.162.136.0/24 94,657 2026-11-11 14:48:58
74.203.87.0/24 81,112 2026-11-11 14:48:58
74.203.92.0/24 81,092 2026-11-11 14:48:58
65.121.54.0/24 77,828 2026-11-11 14:48:58
65.120.92.0/24 74,837 2026-11-11 14:47:36
67.133.180.0/24 65,869 2026-11-11 14:48:58
65.153.51.0/24 55,408 2026-11-11 14:48:58
38.84.6.0/23 45,739 2026-11-11 14:48:58
64.193.88.0/24 43,750 2026-11-11 14:48:58
64.193.84.0/22 43,686 2026-11-11 14:48:58
69.45.31.0/24 43,652 2026-11-11 14:48:58
50.59.192.0/23 41,942 2026-11-11 14:47:36
64.128.255.0/24 41,880 2026-11-11 14:47:36
66.112.106.0/24 40,918 2026-11-11 14:48:58
209.136.212.0/24 40,668 2026-11-11 14:47:36
66.192.24.0/24 40,548 2026-11-11 14:47:36
69.45.18.0/23 39,487 2026-11-11 14:48:58
207.201.195.0/24 38,569 2026-11-11 14:47:36
209.194.41.0/24 38,391 2026-11-11 14:52:36
209.136.114.0/23 38,323 2026-11-11 14:47:36
66.193.104.0/24 37,297 2026-11-11 14:48:58
161.199.26.0/24 36,614 2026-10-02 18:37:40
65.141.102.0/24 36,568 2026-11-11 14:48:58
63.235.108.0/24 36,395 2026-11-11 14:48:58
65.123.4.0/23 34,280 2026-11-11 14:48:58
65.155.47.0/24 33,639 2026-11-11 14:48:58
65.141.135.0/24 32,105 2026-11-11 14:48:58
209.201.109.0/24 31,973 2026-11-11 15:14:37
65.144.177.0/24 31,895 2026-11-11 14:48:58
149.37.200.0/24 31,844 2026-11-11 14:47:36
149.37.1.0/24 31,839 2026-11-11 14:47:36
64.128.48.0/22 31,492 2026-11-11 14:48:58
66.193.126.0/24 30,500 2026-11-11 14:48:58
63.232.35.0/24 30,389 2026-11-11 14:48:58
65.153.212.0/24 29,848 2026-11-11 14:48:58
208.45.236.0/24 29,652 2026-11-11 14:47:36
65.141.35.0/24 29,445 2026-11-11 14:48:58
204.49.186.0/24 29,325 2026-11-11 14:47:36
65.127.75.0/24 29,143 2026-11-11 14:47:36
65.140.60.0/24 29,111 2026-11-11 14:47:36
209.201.88.0/24 28,247 2026-11-11 15:14:37
50.59.11.0/24 27,813 2026-11-11 14:48:58
63.151.19.0/24 27,766 2026-11-11 14:48:58
205.170.127.0/24 27,336 2026-11-11 14:47:36

Showing top 50 of 3,987 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 27.41M IPv4 addresses distributed across 4,429 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: 2026-11-11 15:54:05 UTC
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