Autonomous system
AS17035 NBCUNI-17035
Unclassified ARIN
Summary
NBCUniversal
media business enterprise cable
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, andNBCUNIVERSAL-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
CCCH3-4netname. - 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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
18 upstream, 1 downstream and 20 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 30 prefixes · 24.58K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 30 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS17035- Registry name
- NBCUNI-17035
- Registrant
- NBCUniversal
- Abuse contact
- sralerts@nbcuni.com
- Registered
- 2000-07-17
- Last changed
- 2019-11-07
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 44% valid · 17 valid, 22 with no ROA
- ROAs
- 23 authorising AS17035
- ASPA
- no ASPA record
- IRR
- 64% registered · 25 of 39 announcements
- Route objects
- 31 naming AS17035
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere