Yes — koselarab.com has IPv6.

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

IPv6 readiness

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

Website over IPv6 koselarab.com has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::ac43:44db answers · 443✓ 2606:4700:20::681a:29 answers · 443✓ 2606:4700:20::681a:129 answers · 443	yes
www over IPv6 www.koselarab.com has 3 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:20::681a:29 answers · 443✓ 2606:4700:20::681a:129 answers · 443✓ 2606:4700:20::ac43:44db answers · 443	yes
Mail servers (MX) have IPv6 None of the mail servers has an AAAA record. fwd1.porkbun.com ✗fwd2.porkbun.com ✗	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 ✓rudy.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.

https://koselarab.com/ via 2606:4700:20::ac43:44db → 403

works

What's keeping koselarab.com from an A

Mail servers without IPv6
fwd1.porkbun.com, fwd2.porkbun.com 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

koselarab.com Has IPv6

A (IPv4)	104.26.1.41 104.26.0.41 172.67.68.219
AAAA (IPv6)	2606:4700:20::ac43:44db 2606:4700:20::681a:29 2606:4700:20::681a:129

www.koselarab.com Has IPv6

A (IPv4)	104.26.1.41 172.67.68.219 104.26.0.41
AAAA (IPv6)	2606:4700:20::681a:29 2606:4700:20::681a:129 2606:4700:20::ac43:44db

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: koselarab.com
Measured 2026-10-30 17:25:04 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.26.1.41, 104.26.0.41, 172.67.68.219
AAAA (IPv6): 2606:4700:20::ac43:44db, 2606:4700:20::681a:29, 2606:4700:20::681a:129
www AAAA:    2606:4700:20::681a:29, 2606:4700:20::681a:129, 2606:4700:20::ac43:44db

Readiness grade B: Works over IPv6, with one gap: its mail servers lack IPv6.
- Website over IPv6: koselarab.com has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::ac43:44db: answers (TCP 443)
    2606:4700:20::681a:29: answers (TCP 443)
    2606:4700:20::681a:129: answers (TCP 443)
- www over IPv6: www.koselarab.com has 3 IPv6 addresses and answers on every one we tested.
    2606:4700:20::681a:29: answers (TCP 443)
    2606:4700:20::681a:129: answers (TCP 443)
    2606:4700:20::ac43:44db: 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 403.
    https://koselarab.com/ via 2606:4700:20::ac43:44db -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/R7i9iQyuBi

Permanent link: aaaa.bot/r/R7i9iQyuBi · How we measure

Checked 2026-10-30 17:25:04 UTC. Full DNS report: dns.pizza/domain/koselarab.com · JSON: /api/v1/koselarab.com