Upstream networks
AS12 NYU-DOMAIN
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS12: 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 |
|---|---|---|---|---|
| AS6461 | Zayo Bandwidth | Transit | IPv4 | 280 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 IPv6 | 215 |
| AS3754 | NYSERNet | Education | IPv4 | 70 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 IPv6 | 64 |
| AS3269 | Telecom Italia S.p.A. | Residential | IPv4 | 51 |
| AS46887 | Crown Castle Fiber LLC | Unclassified | IPv4 IPv6 | 21 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 20 |
| AS137 | Consortium GARR | Unclassified | IPv4 | 11 |
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.