Yes — tree21-services.com has IPv6.

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

C
IPv6 readiness
Works over IPv6, with gaps: its mail servers lack IPv6; its nameservers lack IPv6.
Website over IPv6
tree21-services.com has an AAAA record and answers on it.
✓ 2a07:7800::138 answers · 443
yes
www over IPv6
www.tree21-services.com has an AAAA record and answers on it.
✓ 2a07:7800::138 answers · 443
yes
Mail servers (MX) have IPv6
None of the mail servers has an AAAA record.
mx.stackmail.com ✗
no
Nameservers have IPv6
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
ns2.webbhost.co.uk ✗ns1.webbhost.co.uk ✗ns3.webbhost.co.uk ✗ns4.webbhost.co.uk ✗
no
HTTPS over IPv6 · not part of the grade yet
The certificate served over IPv6 at 2a07:7800::138 isn't valid for tree21-services.com: ERR_TLS_CERT_ALTNAME_INVALID.
https://tree21-services.com/ via 2a07:7800::138 · ERR_TLS_CERT_ALTNAME_INVALID
problem
 Load tree21-services.com over IPv6 from up to six other places — a second opinion.

What's keeping tree21-services.com from an A

  1. The certificate served over IPv6 is wrong
    The certificate served over IPv6 at 2a07:7800::138 isn't valid for tree21-services.com: ERR_TLS_CERT_ALTNAME_INVALID. Often the IPv6 address points at a different server (or an old one) than IPv4 does. Make sure 2a07:7800::138 serves the same certificate as your IPv4 address.
  2. Mail servers without IPv6
    mx.stackmail.com 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.
  3. Nameservers without IPv6
    ns2.webbhost.co.uk, ns1.webbhost.co.uk, ns3.webbhost.co.uk, ns4.webbhost.co.uk all have no AAAA record, so a resolver that only speaks IPv6 can't look your domain up. Most DNS providers offer IPv6 nameservers; ask yours, or move DNS to one that does.

Check again

tree21-services.com  Has IPv6

A (IPv4)185.151.30.138
AAAA (IPv6)2a07:7800::138

www.tree21-services.com  Has IPv6

A (IPv4)185.151.30.138
AAAA (IPv6)2a07:7800::138

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

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

Checked 2026-11-02 01:37:27 UTC. Full DNS report: dns.pizza/domain/tree21-services.com · JSON: /api/v1/tree21-services.com