Upstream networks
AS12257 EMC-AS12257
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS12257: 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 | 1,944 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 480 |
| AS1273 | IDDQD-AS | Business | IPv4 | 405 |
| AS12400 | Partner Communications Ltd. | Unclassified | IPv4 | 236 |
| AS701 | Verizon Business | Residential | IPv4 IPv6 | 212 |
| AS7018 | AT&T Enterprises, LLC | Residential | IPv4 IPv6 | 194 |
| AS9498 | BHARTI Airtel Ltd. | Mobile | IPv4 | 126 |
| AS12849 | Hot-Net internet services Ltd. | Residential | IPv4 | 58 |
| AS198949 | Radware Ltd | Unclassified | IPv4 | 58 |
| AS4657 | StarHub Ltd | Residential | IPv4 | 56 |
| AS4755 | TATA Communications formerly VSNL is Leading ISP | Hosting | IPv4 | 54 |
| AS5400 | British Telecommunications Limited | Unclassified | IPv4 | 39 |
| AS2686 | AT&T Enterprises, LLC | Unclassified | IPv4 | 21 |
| AS3257 | GTT Communications Inc. | Transit | IPv4 | 1 |
| AS5580 | GTT Communications Netherlands B.V. | Transit | IPv4 | 1 |
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 2026-10-17 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.18M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.