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
Announced prefixes
4 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 192.5.4.0/23 v4 | RPKI valid | 47 | 6939301323557 | 2026-09-18 |
| 192.5.5.0/24 v4 | RPKI valid | 42 | 34549133353557 | 2026-09-18 |
| 2001:500:2e::/47 v6 | RPKI valid | 37 | 6939301323557 | 2026-09-18 |
| 2001:500:2f::/48 v6 | RPKI valid | 36 | 38001133353557 | 2026-09-18 |