Upstream networks
AS131912 CYBOZU Cybozu,Inc.
Hosting RIPE Content
Transit
Upstream networks
Networks observed carrying traffic for AS131912: 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 |
|---|---|---|---|---|
| AS2497 | Internet Initiative Japan Inc. | Unclassified | IPv4 IPv6 | 94 |
| AS2518 | BIGLOBE Inc. | Residential | IPv4 IPv6 | 51 |
| AS17676 | SoftBank Corp. | Mobile | IPv4 IPv6 | 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 2026-10-29 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.36M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.