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Autonomous System

AS17035

NBCUniversal

Announced IPs
23,808
CIDR prefixes
29
ASN
AS17035

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.

65/100
Moderate
How this score is built

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

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
50.228.144.0/20 4.1K
0.2%
NBCUniversal US New York New York
50.230.144.0/20 4.1K
0.0%
NBCUniversal US California North Hollywood
216.178.96.0/20 4.1K
0.3%
NBCUniversal US
50.207.32.0/21 2.0K
0.0%
NBCUniversal US
70.39.44.0/22 1.0K
0.0%
NBCUniversal US
209.23.192.0/22 1.0K
0.0%
NBCUniversal US
216.4.176.0/22 1.0K
0.2%
NBCUniversal US California Los Angeles
50.221.162.0/23 512
0.0%
NBCUniversal US
70.39.58.0/23 512
0.0%
NBCUniversal US
70.39.62.0/23 512
0.0%
NBCUniversal US
204.237.248.0/23 512
0.4%
NBCUniversal US
8.11.200.0/24 256
0.0%
NBCUniversal US
50.149.85.0/24 256
0.0%
NBCUniversal US
50.172.163.0/24 256
0.4%
NBCUniversal US
50.175.130.0/24 256
0.0%
NBCUniversal US
50.200.194.0/24 256
0.0%
NBCUniversal US
50.218.3.0/24 256
0.0%
NBCUniversal US
50.218.20.0/24 256
0.0%
NBCUniversal US
50.218.36.0/24 256
0.0%
NBCUniversal US
50.220.223.0/24 256
0.0%
NBCUniversal US
50.221.27.0/24 256
0.0%
NBCUniversal US
50.225.179.0/24 256
0.0%
NBCUniversal US Pennsylvania Mohnton
50.227.232.0/24 256
0.0%
NBCUniversal US Florida Miami
50.229.129.0/24 256
0.0%
NBCUniversal US New York Binghamton
70.39.48.0/24 256
0.0%
US
70.39.61.0/24 256
0.0%
NBCUniversal US
70.39.62.0/24 256
0.0%
US
70.39.63.0/24 256
0.0%
NBCUniversal US
173.213.208.0/24 256
0.8%
NBCUniversal US
192.251.69.0/24 256
0.0%
NBCUniversal US California Burbank
209.116.149.0/24 256
0.0%
NBCUniversal US
70.39.61.128/25 128
0.0%
US
70.39.61.64/26 64
0.0%
US
70.39.61.0/27 32
0.0%
GB
70.39.61.48/28 16
0.0%
US
70.39.61.40/29 8
0.0%
US
70.39.61.32/30 4
0.0%
GB
70.39.61.36/30 4
0.0%
US

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS17035 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
70.39.61.0/24 16,743 2026-07-20 10:35:52
70.39.62.0/24 16,392 2026-07-20 10:35:52
50.225.179.0/24 14,105 2026-07-20 10:35:25
216.178.104.0/21 13,576 2026-07-20 10:40:36
50.175.130.0/24 13,051 2026-07-20 10:35:25
70.39.63.0/24 12,003 2026-07-20 10:35:52
50.207.32.0/21 10,010 2026-07-20 10:35:10
50.228.144.0/20 10,002 2026-07-20 10:35:10
50.200.194.0/24 9,341 2026-07-20 10:34:56
70.39.58.0/24 9,213 2026-07-20 10:35:44
70.39.59.0/24 9,183 2026-07-20 10:35:44
50.221.162.0/23 9,105 2026-07-20 10:33:32
209.23.192.0/22 9,063 2026-07-20 10:34:56
50.227.232.0/24 8,078 2026-07-20 10:35:17
173.213.208.0/24 8,004 2026-07-20 10:35:17
50.221.27.0/24 7,789 2026-07-20 10:35:05
50.230.144.0/20 7,643 2026-07-20 10:35:00
70.39.47.0/24 7,471 2026-07-20 10:35:17
70.39.45.0/24 7,317 2026-07-20 10:35:42
70.39.44.0/24 7,306 2026-07-20 10:35:17
192.251.69.0/24 6,687 2026-07-20 10:39:37
70.39.46.0/24 6,560 2026-07-20 10:35:42
50.220.223.0/24 6,227 2026-07-20 10:34:51
204.237.248.0/23 5,984 2026-07-20 10:35:42
216.4.178.0/23 5,946 2026-07-20 10:40:41
216.4.176.0/23 5,896 2026-07-20 10:40:41
216.178.96.0/21 4,542 2026-07-20 10:40:36
50.218.3.0/24 4,315 2026-07-20 10:34:56
50.149.85.0/24 4,282 2026-07-20 10:34:56
50.218.20.0/24 4,024 2026-07-20 10:35:17
50.229.129.0/24 3,778 2026-07-20 10:35:02
50.172.163.0/24 3,733 2026-07-20 10:35:16
50.218.36.0/24 3,700 2026-07-20 10:35:02
209.116.149.0/24 3,556 2026-07-20 10:40:29
8.11.200.0/24 3,507 2026-07-20 10:33:32
216.4.176.0/22 3,504 2026-07-20 10:40:29
70.39.48.0/24 2,029 2026-07-20 10:35:42
64.129.180.0/24 1,402 2026-05-21 06:45:58

Frequently Asked Questions

What is AS17035?

AS17035 is an Autonomous System Number assigned to NBCUniversal. 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 AS17035 announce?

AS17035 announces 23.8K IPv4 addresses distributed across 29 routed CIDR prefixes. The network is registered in United States.

Who operates AS17035?

AS17035 is operated by NBCUniversal. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS17035 registered in?

AS17035 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: 2026-07-20 11:10:33 UTC
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