Upstream networks

AS17035 NBCUNI-17035

Unclassified ARIN

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS17035: the AS immediately before it in a routing path. Ranked by how many paths showed the relationship, which reflects how widely it is used, not how much traffic crosses it.

AS	Network	Type	Families	Paths seen
AS3257	GTT Communications Inc.	Transit	IPv4	567
AS3356	Level 3 Parent, LLC	Transit	IPv4	408
AS7922	Comcast Cable Communications, LLC	Residential	IPv4	222
AS46887	Crown Castle Fiber LLC	Unclassified	IPv4	180
AS8220	COLT Technology Services Group Limited	Hosting	IPv4	142
AS701	Verizon Business	Residential	IPv4	118
AS17060	NBCUniversal	Unclassified	IPv4	118
AS702	Verizon Business	Unclassified	IPv4	90
AS20214	Comcast Cable Communications, LLC	Unclassified	IPv4	79
AS33287	Comcast Cable Communications, LLC	Unclassified	IPv4	64
AS33651	Comcast Cable Communications, LLC	Unclassified	IPv4	63
AS394437	PS Lightwave	Unclassified	IPv4	58
AS33662	Comcast Cable Communications, LLC	Unclassified	IPv4	56
AS33491	Comcast Cable Communications, LLC	Unclassified	IPv4	45
AS33657	Comcast Cable Communications, LLC	Unclassified	IPv4	45
AS7015	Comcast Cable Communications, LLC	Residential	IPv4	21
AS54004	Cablevision Lightpath LLC	Unclassified	IPv4	16
AS33667	Comcast Cable Communications, LLC	Unclassified	IPv4	3

Inferred from path position, not from any declaration by either party. A network appearing here is carrying these routes; whether that is a paid transit arrangement, a backup, or something else is not something routing data can tell you.

Derived from routing tables collected at 2026-10-20 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.16M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.