AS3557 ISC - F-root 🇺🇸 US
Internet Systems Consortium, Inc.. Announcing 4 prefixes, seen at the RIS collectors.
IPv4 prefixes
2
768 (3 × /24)
IPv6 prefixes
2
3 × /48
Upstreams
4
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS3557
- Name
- ISC - F-root
- Organisation
- ISC F-ROOT
- Country
- 🇺🇸 US
- RIR
- ARIN
- Allocated
- 1994-04-21
- Network type
- Non-Profit
- Scope
- Global
- Peering policy
- Open
- IRR as-set
- AS-FROOT
- Website
- https://www.isc.org/f-root/
- PeeringDB
- net/12712
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Upstreams
Networks seen providing transit to this one
| Network | Country | Cone | IPv4 prefixes | Paths | Source |
|---|---|---|---|---|---|
| AS13335 Cloudflare, Inc. | 🇺🇸 US | 19,561 | 2,446 | 77 | CAIDA |
| AS1280 Internet Systems Consortium, Inc. | 🇺🇸 US | 12 | 92 | 11 | CAIDA |
| AS33071 ISC F-ROOT ORD1 | 🇺🇸 US | 3 | 1 | 15 | CAIDA |
| AS30132 ISC F-ROOT AMS1 | 🇺🇸 US | 2 | 4 | 56 | CAIDA |
Peers
Adjacencies that look settlement-free rather than transit
No peers observed at the collectors.
Downstreams
Networks this one appears to provide transit to
No downstreams observed at the collectors.
Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.