AS3557ISC - F-root
United StatesRegistryARINAt a glance
IPv4 prefixes
2
IPv6 prefixes
2
IPv4 addresses
768
IPv6 /64s
197k
Upstream graph
The networks AS3557 is seen behind, one and two hops out, drawn from real AS paths.
AS3557Toward the internet core
Networks observed one and two hops upstream of AS3557 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.
Neighbouring networks
39
adjacent networks
- Upstreams
- 821%
- Peers
- 3179%
- Downstreams
- 00%
Networks carrying this one's traffic toward the rest of the internet.
| Network | Country | Relationship | Paths | Vantage pts |
|---|---|---|---|---|
| AS13335Cloudflare, Inc. | US | Peer | 125 | 125 |
| AS30132ISC F-ROOT AMS1 | US | Peer | 108 | 107 |
| AS1280Internet Systems Consortium, Inc. | US | Peer | 23 | 23 |
| AS33071ISC F-ROOT ORD1 | US | Peer | 12 | 12 |
| AS275701 |  BR | Peer | 2 | 2 |
| AS33082ISC F-ROOT FRA1 | US | Peer | 2 | 2 |
| AS30122ISC F-ROOT GRU1 | US | Peer | 1 | 1 |
| AS23709ISC F-ROOT HKG1 |  HK | Peer | 1 | 1 |
Prefixes
The largest blocks AS3557 originates, widest first.
| Prefix | Addresses | Visibility |
|---|---|---|
| 192.5.4.0/23 | 512 | 80/80 |
| 192.5.5.0/24 | 256 | 76/80 |
| 2001:500:2e::/47 | 131k × /64 | 62/62 |
| 2001:500:2f::/48 | 65.5k × /64 | 56/62 |
Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.