Yes — lihlih.app has IPv6.

Has both IPv4 (A) and IPv6 (AAAA) addresses.

Measured 2026-11-11 03:54 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check lihlih.app now

IPv6 readiness

Works over IPv6, with one gap: its mail servers lack IPv6.

Website over IPv6 lihlih.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:b8fe answers · 443✓ 2606:4700:3037::6815:5c16 answers · 443	yes
www over IPv6 www.lihlih.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3031::ac43:b8fe answers · 443✓ 2606:4700:3037::6815:5c16 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mx2-hosting.jellyfish.systems ✗mx3-hosting.jellyfish.systems ✗mx1-hosting.jellyfish.systems ✗	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. addyson.ns.cloudflare.com ✓weston.ns.cloudflare.com ✓	yes

First measured 2026-11-11; last confirmed 2026-11-11.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 200.

https://lihlih.app/ via 2606:4700:3031::ac43:b8fe → 200

works

What's keeping lihlih.app from an A

Mail servers without IPv6
mx2-hosting.jellyfish.systems, mx3-hosting.jellyfish.systems, mx1-hosting.jellyfish.systems have no AAAA record, so mail from IPv6-only servers can't reach them directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

lihlih.app Has IPv6

A (IPv4)	104.21.92.22 172.67.184.254
AAAA (IPv6)	2606:4700:3031::ac43:b8fe 2606:4700:3037::6815:5c16

www.lihlih.app Has IPv6

A (IPv4)	104.21.92.22 172.67.184.254
AAAA (IPv6)	2606:4700:3031::ac43:b8fe 2606:4700:3037::6815:5c16

Browsers on dual-stack networks will usually pick IPv6 here (the "Happy Eyeballs" algorithm races both and prefers v6).

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

IPv6 measurement: lihlih.app
Measured 2026-11-11 03:54:27 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.92.22, 172.67.184.254
AAAA (IPv6): 2606:4700:3031::ac43:b8fe, 2606:4700:3037::6815:5c16
www AAAA:    2606:4700:3031::ac43:b8fe, 2606:4700:3037::6815:5c16

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: lihlih.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:b8fe: answers (TCP 443)
    2606:4700:3037::6815:5c16: answers (TCP 443)
- www over IPv6: www.lihlih.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3031::ac43:b8fe: answers (TCP 443)
    2606:4700:3037::6815:5c16: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.

Reachability = a TCP connection opened on port 443 (or 80).

HTTPS over IPv6 (not graded): Loads over IPv6 with a valid certificate: HTTP 200.
    https://lihlih.app/ via 2606:4700:3031::ac43:b8fe -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/sBzbA-yAB0

Permanent link: aaaa.bot/r/sBzbA-yAB0 · How we measure

Checked 2026-11-11 03:54:27 UTC. Full DNS report: dns.pizza/domain/lihlih.app · Age, certificate and blocklists: how.is/lihlih.app · JSON: /api/v1/lihlih.app