Observed topology

AS19893 NTT-GLOBAL-DATA-CENTERS-AMERICA-INC

Unclassified ARIN Cable/DSL/ISP

Upstreams 2 carry this network

Downstreams 13 this network carries

Adjacent (IPv4) 14

Adjacent (IPv6) 3

Upstream graph Who carries AS19893, and who carries them, drawn as a map up to the transit-free core. 0 exchanges Where AS19893 physically turns up to peer, and its address on each fabric.

Transit

Upstream networks

inferred

Networks observed carrying traffic for AS19893: 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
AS3356	Level 3 Parent, LLC	Transit	IPv4 IPv6	1,153
AS2914	NTT America, Inc.	Transit	IPv4 IPv6	860

Transit

Downstream networks

All 13

Networks for which AS19893 was observed as the last hop before the origin, meaning it appears to provide them transit.

AS	Network	Type	Families	Paths seen
AS27615	Purple Language Services Co.	Unclassified	IPv4	420
AS54038	Callidus Software Inc.	Unclassified	IPv4	300
AS204670	NTT United Kingdom Ltd	Unclassified	IPv4	119
AS11803	Omnicell	Unclassified	IPv4	60
AS25966	Coherent Inc.	Unclassified	IPv4	60
AS33060	SFPCU	Unclassified	IPv4	60
AS53542	MERCHANT ESOLUTIONS, INC.	Unclassified	IPv4	60
AS395188	US FOODS, INC.	Unclassified	IPv4	60
AS398178	Telcion Communications Group	Unclassified	IPv4	60
AS54900	Alianza Inc.	Hosting	IPv6	32

All 13 downstreams →

Adjacency

Adjacent networks

All 15

Every AS seen directly next to AS19893 in a routing path, in either direction.

AS	Network	Type	Families	Paths seen
AS3356	Level 3 Parent, LLC	Transit	IPv4 IPv6	1,832
AS2914	NTT America, Inc.	Transit	IPv4 IPv6	1,429
AS27615	Purple Language Services Co.	Unclassified	IPv4	420
AS54038	Callidus Software Inc.	Unclassified	IPv4	300
AS204670	NTT United Kingdom Ltd	Unclassified	IPv4	119
AS11803	Omnicell	Unclassified	IPv4	60
AS25966	Coherent Inc.	Unclassified	IPv4	60
AS33060	SFPCU	Unclassified	IPv4	60
AS53542	MERCHANT ESOLUTIONS, INC.	Unclassified	IPv4	60
AS395188	US FOODS, INC.	Unclassified	IPv4	60

All 15 adjacent →

Provenance

Where this comes from

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.

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. Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.

Cross-check against RIPEstat or BGP.tools, which observe from a different and larger set of vantage points.