Yes — jackhorowitz.dev has IPv6.

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

This is a saved measurement from 2026-11-09 02:36 UTC. Check jackhorowitz.dev live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 jackhorowitz.dev has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3037::ac43:c0ac answers · 443✓ 2606:4700:3036::6815:4c62 answers · 443	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 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. mariah.ns.cloudflare.com ✓vern.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 200.

https://jackhorowitz.dev/ via 2606:4700:3037::ac43:c0ac → 302https://noisy-morning-88c4.cloudflareaccess.com/cdn-cgi/access/login/jackhorowitz.dev?kid=87dcf688cd68e215beff607b6bca2078e2e9d97bfa878caac7c0d5f5db4a6c81&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.fX7JzwcTgTTA7nm0ooTH2QnZEr2LVVJIHv_D7njOF8nwiIkA2GV3lG0QaBM2W0Cg6Inqryjw19HXWcsvKkDXRaM6RnQSDh9h-Ry_D_7DJQa6k4sW_jIN0zXDN0QyFa-GWVThNGjth54NJ2ziaYcM5j61-GbcPxK-YlwHkhR1xx_tPvMqXcEUGbRSPNZOacv4OhrXJzFEQT1gGycaY2JyVANTXDfA-_8kwvMGn5Ognzk40nM-CqdTusKLtWqid1W_UQ5hLJxrhDRjgRavTAboH9T-_gpcB-DCmQroodLLkElJ6ibhDLyLMMz5JpHH3uK-mO1Xk_rjuWsBRv1kaqtiew&redirect_url=%2F via 2606:4700:300a::6813:c31d → 200

works

Nothing keeping you from an A

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

Check again

jackhorowitz.dev Has IPv6

A (IPv4)	172.67.192.172 104.21.76.98
AAAA (IPv6)	2606:4700:3037::ac43:c0ac 2606:4700:3036::6815:4c62

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: jackhorowitz.dev
Measured 2026-11-09 02:36:01 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    172.67.192.172, 104.21.76.98
AAAA (IPv6): 2606:4700:3037::ac43:c0ac, 2606:4700:3036::6815:4c62

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: jackhorowitz.dev has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3037::ac43:c0ac: answers (TCP 443)
    2606:4700:3036::6815:4c62: answers (TCP 443)
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It 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 after 1 redirect: HTTP 200.
    https://jackhorowitz.dev/ via 2606:4700:3037::ac43:c0ac -> HTTP 302, certificate: valid
    https://noisy-morning-88c4.cloudflareaccess.com/cdn-cgi/access/login/jackhorowitz.dev?kid=87dcf688cd68e215beff607b6bca2078e2e9d97bfa878caac7c0d5f5db4a6c81&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.fX7JzwcTgTTA7nm0ooTH2QnZEr2LVVJIHv_D7njOF8nwiIkA2GV3lG0QaBM2W0Cg6Inqryjw19HXWcsvKkDXRaM6RnQSDh9h-Ry_D_7DJQa6k4sW_jIN0zXDN0QyFa-GWVThNGjth54NJ2ziaYcM5j61-GbcPxK-YlwHkhR1xx_tPvMqXcEUGbRSPNZOacv4OhrXJzFEQT1gGycaY2JyVANTXDfA-_8kwvMGn5Ognzk40nM-CqdTusKLtWqid1W_UQ5hLJxrhDRjgRavTAboH9T-_gpcB-DCmQroodLLkElJ6ibhDLyLMMz5JpHH3uK-mO1Xk_rjuWsBRv1kaqtiew&redirect_url=%2F via 2606:4700:300a::6813:c31d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/fkWDm4EFpT

Permanent link: aaaa.bot/r/fkWDm4EFpT · How we measure

Checked 2026-11-09 02:36:01 UTC. Full DNS report: dns.pizza/domain/jackhorowitz.dev · Age, certificate and blocklists: how.is/jackhorowitz.dev · JSON: /api/v1/jackhorowitz.dev