Yes — smithtree.app has IPv6.

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

This is a saved measurement from 2026-11-03 01:05 UTC. Check smithtree.app live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 smithtree.app has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3034::ac43:b7a3 answers · 443✓ 2606:4700:3033::6815:4bed 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. chan.ns.cloudflare.com ✓jasper.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://smithtree.app/ via 2606:4700:3034::ac43:b7a3 → 302https://red-leaf-93b5.cloudflareaccess.com/cdn-cgi/access/login/smithtree.app?kid=a21a5813b951f1a787bccd3578beaab80bf8862f500142a6bf39a079e59fb6bf&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.d8og1drWNEQWxpSaSHgItxWZl3TOll5vD_aznF2kpXxYRlQdqwQtM7aNI9XwhFcZnHKb4LjGYPzD2q54b3D4z_SFREgCKxNVNfpOSYd8jbfcD4ZMRQ30pvjgLiks05nBWPHCYjpdhz5JIXknb3oWNAW5fYWM9j_zyFt-IDyDIb4EIhoVQevlmxe35jtZJUX3hPC7MnWoHkTE9Mc7IvuwZnJqUtL-6kHLty0G0NbNvEhJ_mb4A7mUi7rM9JrmXLTN2eTM5rBNGeEjKgnzNOaEctqocKp1s-eHmcOM-XWeHQgoDB0Xlb2qIKtox4S89uMHj_ShTBDosxNkLgZc4w-IrA&redirect_url=%2F via 2606:4700:300a::6813:c21d → 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/smithtree.app.svg)](https://aaaa.bot/smithtree.app)

Check again

smithtree.app Has IPv6

A (IPv4)	104.21.75.237 172.67.183.163
AAAA (IPv6)	2606:4700:3034::ac43:b7a3 2606:4700:3033::6815:4bed

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: smithtree.app
Measured 2026-11-03 01:05:42 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.75.237, 172.67.183.163
AAAA (IPv6): 2606:4700:3034::ac43:b7a3, 2606:4700:3033::6815:4bed

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: smithtree.app has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3034::ac43:b7a3: answers (TCP 443)
    2606:4700:3033::6815:4bed: 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://smithtree.app/ via 2606:4700:3034::ac43:b7a3 -> HTTP 302, certificate: valid
    https://red-leaf-93b5.cloudflareaccess.com/cdn-cgi/access/login/smithtree.app?kid=a21a5813b951f1a787bccd3578beaab80bf8862f500142a6bf39a079e59fb6bf&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6Ijg2OGFmMjMzMzMwYTk2ZmFjNTUzMTBhMmQyN2E2MmQ1ZWM1YWY5Zjg3ZDBhOTg5OTNhMzk0MjZlMDg1NGI2NzcifQ.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.d8og1drWNEQWxpSaSHgItxWZl3TOll5vD_aznF2kpXxYRlQdqwQtM7aNI9XwhFcZnHKb4LjGYPzD2q54b3D4z_SFREgCKxNVNfpOSYd8jbfcD4ZMRQ30pvjgLiks05nBWPHCYjpdhz5JIXknb3oWNAW5fYWM9j_zyFt-IDyDIb4EIhoVQevlmxe35jtZJUX3hPC7MnWoHkTE9Mc7IvuwZnJqUtL-6kHLty0G0NbNvEhJ_mb4A7mUi7rM9JrmXLTN2eTM5rBNGeEjKgnzNOaEctqocKp1s-eHmcOM-XWeHQgoDB0Xlb2qIKtox4S89uMHj_ShTBDosxNkLgZc4w-IrA&redirect_url=%2F via 2606:4700:300a::6813:c21d -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/0qfJUKhqIJ

Permanent link: aaaa.bot/r/0qfJUKhqIJ · How we measure

Checked 2026-11-03 01:05:42 UTC. Full DNS report: dns.pizza/domain/smithtree.app · Age, certificate and blocklists: how.is/smithtree.app · JSON: /api/v1/smithtree.app