Upstream networks
AS3557 ISC-AS
Unclassified ARIN
Transit
Upstream networks
Networks observed carrying traffic for AS3557: 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 |
|---|---|---|---|---|
| AS13335 | Cloudflare, Inc. | Hosting | IPv4 IPv6 | 90 |
| AS30132 | Internet Systems Consortium, Inc. | Unclassified | IPv4 IPv6 | 62 |
| AS1280 | Internet Systems Consortium, Inc. | Unclassified | IPv4 IPv6 | 20 |
| AS33071 | Internet Systems Consortium, Inc. | Unclassified | IPv4 IPv6 | 19 |
| AS27321 | Internet Systems Consortium, Inc. | Unclassified | IPv4 | 2 |
| AS2847 | Kauno Technologijos Universitetas | Education | IPv4 | 1 |
| AS45220 | Internet Systems Consortium, Auckland | Unclassified | IPv6 | 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 2026-10-21 10:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.14M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.