Yes — nickymatthijssen.dev has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 nickymatthijssen.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:9285 answers · 443✓ 2606:4700:3032::6815:2195 answers · 443	yes
www over IPv6 www.nickymatthijssen.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::ac43:9285 answers · 443✓ 2606:4700:3032::6815:2195 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. _dc-mx.7bade21d55a7.nickymatthijssen.dev ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. jay.ns.cloudflare.com ✓khloe.ns.cloudflare.com ✓	yes

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

https://nickymatthijssen.dev/ via 2606:4700:3035::ac43:9285 → 403

works

Nothing keeping you from an A

Nothing to fix
Show it off: add the badge to your README.
[![IPv6](https://aaaa.bot/badge/nickymatthijssen.dev.svg)](https://aaaa.bot/nickymatthijssen.dev)

Check again

nickymatthijssen.dev Has IPv6

A (IPv4)	104.21.33.149 172.67.146.133
AAAA (IPv6)	2606:4700:3035::ac43:9285 2606:4700:3032::6815:2195

www.nickymatthijssen.dev Has IPv6

A (IPv4)	172.67.146.133 104.21.33.149
AAAA (IPv6)	2606:4700:3035::ac43:9285 2606:4700:3032::6815:2195

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: nickymatthijssen.dev
Measured 2026-11-14 15:32:46 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.33.149, 172.67.146.133
AAAA (IPv6): 2606:4700:3035::ac43:9285, 2606:4700:3032::6815:2195
www AAAA:    2606:4700:3035::ac43:9285, 2606:4700:3032::6815:2195

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: nickymatthijssen.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:9285: answers (TCP 443)
    2606:4700:3032::6815:2195: answers (TCP 443)
- www over IPv6: www.nickymatthijssen.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::ac43:9285: answers (TCP 443)
    2606:4700:3032::6815:2195: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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://nickymatthijssen.dev/ via 2606:4700:3035::ac43:9285 -> HTTP 403, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/KyVW1zZD5Y

Permanent link: aaaa.bot/r/KyVW1zZD5Y · How we measure

Checked 2026-11-14 15:32:46 UTC. Full DNS report: dns.pizza/domain/nickymatthijssen.dev · Age, certificate and blocklists: how.is/nickymatthijssen.dev · JSON: /api/v1/nickymatthijssen.dev