AS17035 — NBCUNI-17035 - NBCUniversal

AS17035 announces 29 IPv4 prefixes covering 24,064 addresses and 0 IPv6 prefixes.

About this network

NBCUNI-17035 is the autonomous system for NBCUniversal, the media and entertainment division of Comcast.

What it's used for

• The address space carries corporate and cable infrastructure, evidenced by netnames such as ENTERTAINMENTTV, XOXO-216-4-176-0, and NBCUNIVERSAL-GTT.
• The AS announces 24320 IPv4 addresses across 29 prefixes with 20 observed neighbours, indicating a business network with moderate peering rather than a large-scale residential access provider.

Notable

• Registrants include both NBCUniversal and Comcast Cable Communications, LLC, reflecting the corporate relationship and shared infrastructure between the media division and its parent company.
• The inventory consists of a mix of /20, /22, and /24 blocks, with several prefixes registered to Comcast Cable Communications, LLC under the CCCH3-4 netname.
• The address space is finely subdivided, consistent with an internal corporate estate segmented by function or site.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 8.11.200.0/24
• 50.149.85.0/24
• 50.172.163.0/24
• 50.175.130.0/24
• 50.200.194.0/24
• 50.207.32.0/21
• 50.218.3.0/24
• 50.218.20.0/24
• 50.218.36.0/24
• 50.220.223.0/24
• 50.221.27.0/24
• 50.221.162.0/23
• 50.225.179.0/24
• 50.227.232.0/24
• 50.228.144.0/20
• 50.229.129.0/24
• 50.230.144.0/20
• 70.39.32.0/23
• 70.39.44.0/22
• 70.39.48.0/23
• 70.39.61.0/24
• 70.39.62.0/24
• 173.213.208.0/24
• 192.251.69.0/24
• 204.237.248.0/23
• 209.23.192.0/22
• 209.116.149.0/24
• 216.4.176.0/22
• 216.178.96.0/20

Upstream networks

• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS7922 Comcast Cable Communications, LLC
• AS46887 Crown Castle Fiber LLC
• AS8220 COLT Technology Services Group Limited
• AS701 Verizon Business
• AS702 Verizon Business
• AS20214 Comcast Cable Communications, LLC
• AS33651 Comcast Cable Communications, LLC
• AS33287 Comcast Cable Communications, LLC
• AS394437 PS Lightwave
• AS33662 Comcast Cable Communications, LLC
• AS33491 Comcast Cable Communications, LLC
• AS33657 Comcast Cable Communications, LLC
• AS7015 Comcast Cable Communications, LLC
• AS54004 Cablevision Lightpath LLC
• AS33667 Comcast Cable Communications, LLC
• AS33659 Comcast Cable Communications, LLC
• AS17060 NBCUniversal

Downstream networks

• AS17060 NBCUniversal

Adjacent networks

• AS3257 GTT Communications Inc.
• AS3356 Level 3 Parent, LLC
• AS7922 Comcast Cable Communications, LLC
• AS46887 Crown Castle Fiber LLC
• AS8220 COLT Technology Services Group Limited
• AS17060 NBCUniversal
• AS33661 Comcast Cable Communications, LLC
• AS701 Verizon Business
• AS702 Verizon Business
• AS20214 Comcast Cable Communications, LLC
• AS33651 Comcast Cable Communications, LLC
• AS33287 Comcast Cable Communications, LLC
• AS394437 PS Lightwave
• AS33662 Comcast Cable Communications, LLC
• AS33491 Comcast Cable Communications, LLC
• AS33657 Comcast Cable Communications, LLC
• AS7015 Comcast Cable Communications, LLC
• AS54004 Cablevision Lightpath LLC
• AS33667 Comcast Cable Communications, LLC
• AS33659 Comcast Cable Communications, LLC

Routing security

• RPKI: 17 valid, 0 invalid and 23 not-found announcements; 23 ROAs.
• ASPA: none published.
• IRR: 60% of announcements registered; 32 route objects.
• Listed in as-sets: AS-CCF, AS-CCF-TEST, AS-COMCAST-EDIA, AS-COMCAST-IBONE, AS-GTTCUST, AS-GTTCUST6, AS-MFNX, AS-PSLIGHTWAVE, AS394437:AS-PSLIGHTWAVE-L3, AS394437:AS-TESTING, AS6128:AS-CUSTOMERS, AS8220:AS-COLTUK.