Public DNS

No signal critical tier-0 DNS external

Authoritative public DNS. Controls whether published routes resolve at all.

Last heartbeat: never
Signal source: probe

Recovery readiness70/100

Recovery procedure →

Why it is no signal

self No heartbeat has ever been received from this entity.

Availability class

Fleet-fatal · target 99.5%

Authoritative public DNS: decides whether published routes resolve at all.

Class: tier-0 Fleet-fatal: loss stops the estate or risks data. Everything else waits.
RTO (declared): —
RTO (achievable): —
RPO: —
State: none
Redundancy: vendor HA
Failover: vendor
Failure domain: fd-edge-dns

Health check: authoritative resolution probe every 900s — proves the expected records are returned by the authoritative nameserver. Observed independently of the service.

Without it: Nothing published resolves. Clients with warm caches keep working until TTLs expire, which is why a correct fix can still look broken for minutes. LAN access by IP is unaffected.

Full classification and SLOs →

Dependencies

blast radius: 1

Depends on ISP Uplink

Depended on by Caddy (reverse proxy)