Adjacent networks
AS21101 SISTEMIUNO-AS Sistemi Hardware&Software S.P.A.
Residential RIPE Cable/DSL/ISP
Adjacency
Adjacent networks
Every AS seen directly next to AS21101 in a routing path, in either direction.
| AS | Network | Type | Families | Paths seen |
|---|---|---|---|---|
| AS41327 | Fiber Telecom S.p.A. | Residential | IPv4 | 884 |
| AS12779 | IT.Gate S.p.A. | Unclassified | IPv4 | 163 |
| AS6939 | Hurricane Electric LLC | Transit | IPv4 | 146 |
| AS13060 | Basic Net SpA | Unclassified | IPv4 | 59 |
| AS44091 | SISTEMI SPA | Unclassified | IPv4 | 26 |
| AS3303 | Swisscom (Schweiz) AG | Residential | IPv4 | 22 |
| AS20766 | Association "Gitoyen" | Unclassified | IPv4 | 22 |
| AS37721 | Virtual Technologies & Solutions | Residential | IPv4 | 22 |
| AS50628 | Leonix Telecom SAS | Unclassified | IPv4 | 22 |
| AS59919 | Brainbox S.r.l. | Residential | IPv4 | 22 |
| AS24482 | SG.GS | Hosting | IPv4 | 21 |
| AS31543 | myNet GmbH | Residential | IPv4 | 1 |
Adjacency is not the same as peering. Being next to each other in a path covers paid transit, settlement-free peering and customer connections alike, and routing data cannot distinguish them. Treat this as "these networks exchange routes", nothing more specific.
Derived from routing tables collected at 2026-11-01 10:00 UTC by route-views2,rrc00, as seen from 76 BGP vantage points across 74.48M route entries. These are observations from those vantage points, not a complete or authoritative view of the internet.