Yes — fastlysims.com has IPv6.

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

This is a saved measurement from 2026-11-02 02:06 UTC. Check fastlysims.com live now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 fastlysims.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:f321:ce08:bb58:3428:d01e answers · 443✓ 2a02:4780:84:1ed3:3b90:d870:7d72:375e answers · 443	yes
www over IPv6 www.fastlysims.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2a02:4780:84:3ded:5c15:8644:51a2:a04f answers · 443✓ 2a02:4780:84:8237:2d80:7922:7ce9:6727 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. lunar.dns-parking.com ✓solar.dns-parking.com ✓	yes

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

https://fastlysims.com/ via 2a02:4780:84:f321:ce08:bb58:3428:d01e → 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/fastlysims.com.svg)](https://aaaa.bot/fastlysims.com)

Check again

fastlysims.com Has IPv6

A (IPv4)	88.222.222.248 2.57.91.65
AAAA (IPv6)	2a02:4780:84:f321:ce08:bb58:3428:d01e 2a02:4780:84:1ed3:3b90:d870:7d72:375e

www.fastlysims.com Has IPv6

Alias of	www.fastlysims.com.cdn.hstgr.net
A (IPv4)	147.79.72.227 145.223.124.0
AAAA (IPv6)	2a02:4780:84:3ded:5c15:8644:51a2:a04f 2a02:4780:84:8237:2d80:7922:7ce9:6727

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: fastlysims.com
Measured 2026-11-02 02:05:58 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    88.222.222.248, 2.57.91.65
AAAA (IPv6): 2a02:4780:84:f321:ce08:bb58:3428:d01e, 2a02:4780:84:1ed3:3b90:d870:7d72:375e
www AAAA:    2a02:4780:84:3ded:5c15:8644:51a2:a04f, 2a02:4780:84:8237:2d80:7922:7ce9:6727

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: fastlysims.com has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:f321:ce08:bb58:3428:d01e: answers (TCP 443)
    2a02:4780:84:1ed3:3b90:d870:7d72:375e: answers (TCP 443)
- www over IPv6: www.fastlysims.com has 2 IPv6 addresses and answers on every one we tested.
    2a02:4780:84:3ded:5c15:8644:51a2:a04f: answers (TCP 443)
    2a02:4780:84:8237:2d80:7922:7ce9:6727: 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: HTTP 200.
    https://fastlysims.com/ via 2a02:4780:84:f321:ce08:bb58:3428:d01e -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/Dq_kbYGunh

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

Checked 2026-11-02 02:05:58 UTC. Full DNS report: dns.pizza/domain/fastlysims.com · JSON: /api/v1/fastlysims.com