ledger.courses has no address at all.

The name exists but has neither an A nor an AAAA record.

ledger.courses No address

A (IPv4)	none
AAAA (IPv6)	none

Copy the evidence — a citation-ready record of this measurement

IPv6 measurement: ledger.courses
Measured 2026-11-08 21:05:57 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    none
AAAA (IPv6): none
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/6WyO7KC7oB

Permanent link: aaaa.bot/r/6WyO7KC7oB · How we measure

Checked 2026-11-08 21:05:57 UTC. Full DNS report: dns.pizza/domain/ledger.courses · Age, certificate and blocklists: how.is/ledger.courses · JSON: /api/v1/ledger.courses