Yes — practicesendgrid.com has IPv6.

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

This is a saved measurement from 2026-11-13 01:44 UTC. Check practicesendgrid.com live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 practicesendgrid.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::6815:2776 answers · 443✓ 2606:4700:3037::ac43:9141 answers · 443	yes
www over IPv6 www.practicesendgrid.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2606:4700:3035::6815:2776 answers · 443✓ 2606:4700:3037::ac43:9141 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. raina.ns.cloudflare.com ✓roman.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
practicesendgrid.com didn't complete an HTTPS request over IPv6 (timed out).

https://practicesendgrid.com/ via 2606:4700:3035::6815:2776 · timed out

Nothing keeping you from an A

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

Check again

practicesendgrid.com Has IPv6

A (IPv4)	104.21.39.118 172.67.145.65
AAAA (IPv6)	2606:4700:3035::6815:2776 2606:4700:3037::ac43:9141

www.practicesendgrid.com Has IPv6

A (IPv4)	172.67.145.65 104.21.39.118
AAAA (IPv6)	2606:4700:3035::6815:2776 2606:4700:3037::ac43:9141

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: practicesendgrid.com
Measured 2026-11-13 01:44:34 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.21.39.118, 172.67.145.65
AAAA (IPv6): 2606:4700:3035::6815:2776, 2606:4700:3037::ac43:9141
www AAAA:    2606:4700:3035::6815:2776, 2606:4700:3037::ac43:9141

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: practicesendgrid.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::6815:2776: answers (TCP 443)
    2606:4700:3037::ac43:9141: answers (TCP 443)
- www over IPv6: www.practicesendgrid.com has 2 IPv6 addresses and answers on every one we tested.
    2606:4700:3035::6815:2776: answers (TCP 443)
    2606:4700:3037::ac43:9141: 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): practicesendgrid.com didn't complete an HTTPS request over IPv6 (timed out).
    https://practicesendgrid.com/ via 2606:4700:3035::6815:2776, certificate: valid (timed out)
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/6HBfMBADah

Permanent link: aaaa.bot/r/6HBfMBADah · How we measure

Checked 2026-11-13 01:44:34 UTC. Full DNS report: dns.pizza/domain/practicesendgrid.com · Age, certificate and blocklists: how.is/practicesendgrid.com · JSON: /api/v1/practicesendgrid.com