Yes — overlappr.info has IPv6.

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

Measured 2026-11-12 13:45 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check overlappr.info now

IPv6 readiness

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

Website over IPv6 overlappr.info has an AAAA record and answers on it. ✓ 2001:8d8:100f:f000::200 answers · 443	yes
www over IPv6 www.overlappr.info has an AAAA record and answers on it. ✓ 2001:8d8:100f:f000::200 answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. mailserver.livemail.co.uk ✗	no
Nameservers have IPv6 3 of 3 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns2.livedns.co.uk ✓ns3.livedns.co.uk ✓ns1.livedns.co.uk ✓	yes

First measured 2026-11-12; last confirmed 2026-11-12.

HTTPS over IPv6 · not part of the grade yet
overlappr.info didn't complete an HTTPS request over IPv6 (timed out).

https://overlappr.info/ via 2001:8d8:100f:f000::200 · timed out

What's keeping overlappr.info from an A

Mail servers without IPv6
mailserver.livemail.co.uk has no AAAA record, so mail from IPv6-only servers can't reach it directly. If a provider runs your mail, that's their setting; if you run it, add AAAA records for these hosts.

Check again

overlappr.info Has IPv6

A (IPv4)	217.160.0.11
AAAA (IPv6)	2001:8d8:100f:f000::200

www.overlappr.info Has IPv6

A (IPv4)	217.160.0.11
AAAA (IPv6)	2001:8d8:100f:f000::200

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: overlappr.info
Measured 2026-11-12 13:45:24 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    217.160.0.11
AAAA (IPv6): 2001:8d8:100f:f000::200
www AAAA:    2001:8d8:100f:f000::200

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: overlappr.info has an AAAA record and answers on it.
    2001:8d8:100f:f000::200: answers (TCP 443)
- www over IPv6: www.overlappr.info has an AAAA record and answers on it.
    2001:8d8:100f:f000::200: answers (TCP 443)
- Mail servers (MX) have IPv6: None of the mail servers has an AAAA record.
- Nameservers have IPv6: 3 of 3 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): overlappr.info didn't complete an HTTPS request over IPv6 (timed out).
    https://overlappr.info/ via 2001:8d8:100f:f000::200, certificate: valid (timed out)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/Lx1YIYBMIX

Permanent link: aaaa.bot/r/Lx1YIYBMIX · How we measure

Checked 2026-11-12 13:45:24 UTC. Full DNS report: dns.pizza/domain/overlappr.info · Age, certificate and blocklists: how.is/overlappr.info · JSON: /api/v1/overlappr.info