Upstream networks
AS6421 AS6421 - TATA COMMUNICATIONS AMERICA INC
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS6421: 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 |
|---|---|---|---|---|
| AS6453 | TATA COMMUNICATIONS (AMERICA) INC | Transit | IPv4 IPv6 | 1,730 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 191 |
| AS8220 | COLT Technology Services Group Limited | Hosting | IPv4 | 27 |
| AS17639 | Converge ICT Solutions Inc. | Unclassified | IPv4 | 26 |
| AS24482 | SG.GS | Hosting | IPv4 | 26 |
| AS37989 | DCS1 Pte. Ltd. | Hosting | IPv4 | 26 |
| AS38001 | NewMedia Express Pte Ltd | Hosting | IPv4 | 26 |
| AS9507 | NextHop Pty Ltd | Unclassified | IPv4 | 23 |
| AS55720 | Gigabit Hosting Sdn Bhd | Hosting | IPv4 | 18 |
| AS4766 | Korea Telecom | Mobile | IPv4 | 8 |
| AS4635 | Hong Kong Internet Exchange--Route Server 1 | 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 2026-10-13 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.22M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.