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ust.hk has no address at all.

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

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

IPv6 measurement: ust.hk Measured 2026-11-15 15:44:25 UTC by aaaa.bot (one server on Fly.io, region iad) A (IPv4): none AAAA (IPv6): none www AAAA: none DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method Permanent link: https://aaaa.bot/r/Pxa-Css2Q_

Copy  Permanent link: aaaa.bot/r/Pxa-Css2Q_ · How we measure

Checked 2026-11-15 15:44:25 UTC. Full DNS report: dns.pizza/domain/ust.hk · Age, certificate and blocklists: how.is/ust.hk · JSON: /api/v1/ust.hk