Yes — dupixentclaims.com has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: its nameservers lack IPv6.
Website over IPv6
dupixentclaims.com has 4 IPv6 addresses and answers on every one we tested (1 more not tested).
✓ 2606:4700:4406::18f6:2c43 answers · 443✓ 2606:4700:440a::4ece:f591 answers · 443✓ 2606:4700:9ad2::a6f9:3cec answers · 443✓ 2606:4700:9ae9::8823:a12b answers · 443– 2606:4700:9c68::39a3:5e9 not tested
yes
www over IPv6
www.dupixentclaims.com has 4 IPv6 addresses and answers on every one we tested (1 more not tested).
✓ 2606:4700:9ae9::8823:a12b answers · 443✓ 2606:4700:9c68::39a3:5e9 answers · 443✓ 2606:4700:4406::18f6:2c43 answers · 443✓ 2606:4700:440a::4ece:f591 answers · 443– 2606:4700:9ad2::a6f9:3cec not tested
yes
Mail servers (MX) have IPv6
No MX records, so mail goes to the domain's own address (implicit MX). It has an AAAA record.		yes
Nameservers have IPv6
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
ns1.julydns.com ✗ns2.julydns.com ✗
no
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate: HTTP 403.
https://dupixentclaims.com/ via 2606:4700:4406::18f6:2c43 → 403
works
 Which outside scripts, fonts, payments or chat dupixentclaims.com loads from have no IPv6.
 Load dupixentclaims.com over IPv6 from up to six other places — a second opinion.

What's keeping dupixentclaims.com from an A

  1. Nameservers without IPv6
    ns1.julydns.com, ns2.julydns.com 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

dupixentclaims.com  Has IPv6

Alias ofa.dnsapi12.com → baidu.cloudflare.182682.xyz
A (IPv4)172.66.199.242
104.25.242.237
104.25.253.30
172.64.146.18
172.66.138.87
AAAA (IPv6)2606:4700:4406::18f6:2c43
2606:4700:440a::4ece:f591
2606:4700:9ad2::a6f9:3cec
2606:4700:9ae9::8823:a12b
2606:4700:9c68::39a3:5e9

www.dupixentclaims.com  Has IPv6

Alias ofa.dnsapi12.com → baidu.cloudflare.182682.xyz
A (IPv4)104.25.242.237
104.25.253.30
172.64.146.18
172.66.138.87
172.66.199.242
AAAA (IPv6)2606:4700:9ae9::8823:a12b
2606:4700:9c68::39a3:5e9
2606:4700:4406::18f6:2c43
2606:4700:440a::4ece:f591
2606:4700:9ad2::a6f9:3cec

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/GsRfmyOgqT · How we measure

Checked 2026-11-15 08:47:00 UTC. Full DNS report: dns.pizza/domain/dupixentclaims.com · Age, certificate and blocklists: how.is/dupixentclaims.com · JSON: /api/v1/dupixentclaims.com