23.141.168.0/24 (NRPM 4.10). Every IPv4 address here is shared; customers are assigned IPv6 only.
Checked 2026-10-07 05:39 UTC, every 5 minutes.
| Service | Address | State | Detail |
|---|---|---|---|
| gw | 23.141.168.1 | OK | up |
| ns1 (authoritative) | 23.141.168.2 / 2600:1f18:6a73:8c64:64::2 | OK | gw.v6.f.st. |
| ns2 (authoritative) | 23.141.168.3 / 2600:1f18:6a73:8c64:64::3 | OK | gw.v6.f.st. |
| dns64-1 | 23.141.168.4 / 2600:1f18:6a73:8c64:64::4 | OK | 2600:1f18:6a73:8c64:64:a:c000:ab 2600:1f18:6a73:8c64:64:a:c000:aa |
| dns64-2 | 23.141.168.5 / 2600:1f18:6a73:8c64:64::5 | OK | 2600:1f18:6a73:8c64:64:a:c000:ab 2600:1f18:6a73:8c64:64:a:c000:aa |
| ntp | 23.141.168.6 / 2600:1f18:6a73:8c64:64::6 | OK | stratum 4 |
| status | 23.141.168.7 / 2600:1f18:6a73:8c64:64::7 | OK | 200 |
| cdn shared VIPs | 23.141.168.16-31 | OK | 16 VIPs serve v6.f.st |
| port mapping | 23.141.168.32-63 | OK | 1 mappings |
| nat64 pool A | 2600:1f18:6a73:8c64:64:a::/96 -> .64-127 | OK | egress 23.141.168.100 |
| nat64 pool B | 2600:1f18:6a73:8c64:64:b::/96 -> .128-191 | OK | egress 23.141.168.164 |
| Subnet | Use | Addresses |
|---|---|---|
23.141.168.1 | gateway / management | 1 |
23.141.168.2 .3 | authoritative DNS (ns1/ns2.f.st), dual stack | 2 |
23.141.168.4 .5 | DNS64 recursive resolvers (FST platform and registered networks) | 2 |
23.141.168.6 | NTP, dual stack | 1 |
23.141.168.7 | monitoring / this status page | 1 |
23.141.168.8/29 | reserved, not in use | 0 |
23.141.168.16/28 | dual-stack CDN shared VIPs: IPv4 users reach IPv6-only origins by SNI / Host | 16 |
23.141.168.32/27 | shared port mapping: IPv4:port to IPv6-only backends | 32 |
23.141.168.64/26 | NAT64 pool A (FST platform IPv6-only hosts), prefix 2600:1f18:6a73:8c64:64:a::/96 | 64 |
23.141.168.128/26 | NAT64 pool B (registered external IPv6-only networks), prefix 2600:1f18:6a73:8c64:64:b::/96 | 64 |
23.141.168.192/26 | reserved, not in use | 0 |
NTP at ntp.v6.f.st is public. DNS64 and NAT64 are limited to the FST platform and networks registered with FST.
Abuse and NAT64 traceback: i@f.st (NAT64 uses fixed per-host port blocks, include address, port and time).