Upstream networks
AS5501 FRAUNHOFER-CLUSTER-BW Research Institutes spread all over Germany
Education RIPE
Transit
Upstream networks
Networks observed carrying traffic for AS5501: 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 |
|---|---|---|---|---|
| AS553 | Universitaet Stuttgart | Unclassified | IPv4 IPv6 | 1,578 |
| AS680 | Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. | Unclassified | IPv4 IPv6 | 843 |
| AS13045 | htp GmbH | Residential | IPv4 IPv6 | 328 |
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 2026-10-25 12:00 UTC by route-views2,rrc00, as seen from 75 BGP vantage points across 73.17M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.