Upstream networks
AS21756 AS21756 - SIDERCA S.A.I.C.
Unclassified APNIC
Transit
Upstream networks
Networks observed carrying traffic for AS21756: 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 |
|---|---|---|---|---|
| AS11014 | CPS | Residential | IPv4 | 185 |
| AS11664 | Techtel LMDS Comunicaciones Interactivas S.A. | Residential | IPv4 | 70 |
| AS16814 | NSS S.A. | Unclassified | IPv4 | 40 |
| AS3356 | Level 3 Parent, LLC | Transit | IPv4 | 12 |
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 2026-11-05 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 73.57M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.