Yes — fastly.net has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 fastly.net has 4 IPv6 addresses and answers on every one we tested. ✓ 2a04:4e42::262 answers · 443✓ 2a04:4e42:200::262 answers · 443✓ 2a04:4e42:400::262 answers · 443✓ 2a04:4e42:600::262 answers · 443	yes
www over IPv6 www.fastly.net has 4 IPv6 addresses and answers on every one we tested. ✓ 2a04:4e42::262 answers · 443✓ 2a04:4e42:200::262 answers · 443✓ 2a04:4e42:400::262 answers · 443✓ 2a04:4e42:600::262 answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. aspmx.l.google.com ✓alt1.aspmx.l.google.com ✓	yes
Nameservers have IPv6 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns1.fastly.net ✓ns2.fastly.net ✓ns3.fastly.net ✓ns4.fastly.net ✓	yes

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

https://fastly.net/ via 2a04:4e42::262 → 301https://www.fastly.com/ via 2a04:4e42::313 → 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/fastly.net.svg)](https://aaaa.bot/fastly.net)

Check again

fastly.net Has IPv6

A (IPv4)	151.101.1.6 151.101.65.6 151.101.129.6 151.101.193.6
AAAA (IPv6)	2a04:4e42::262 2a04:4e42:200::262 2a04:4e42:400::262 2a04:4e42:600::262

www.fastly.net Has IPv6

Alias of	fastly.net
A (IPv4)	151.101.1.6 151.101.65.6 151.101.129.6 151.101.193.6
AAAA (IPv6)	2a04:4e42::262 2a04:4e42:200::262 2a04:4e42:400::262 2a04:4e42:600::262

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: fastly.net
Measured 2026-10-30 17:17:02 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    151.101.1.6, 151.101.65.6, 151.101.129.6, 151.101.193.6
AAAA (IPv6): 2a04:4e42::262, 2a04:4e42:200::262, 2a04:4e42:400::262, 2a04:4e42:600::262
www AAAA:    2a04:4e42::262, 2a04:4e42:200::262, 2a04:4e42:400::262, 2a04:4e42:600::262

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: fastly.net has 4 IPv6 addresses and answers on every one we tested.
    2a04:4e42::262: answers (TCP 443)
    2a04:4e42:200::262: answers (TCP 443)
    2a04:4e42:400::262: answers (TCP 443)
    2a04:4e42:600::262: answers (TCP 443)
- www over IPv6: www.fastly.net has 4 IPv6 addresses and answers on every one we tested.
    2a04:4e42::262: answers (TCP 443)
    2a04:4e42:200::262: answers (TCP 443)
    2a04:4e42:400::262: answers (TCP 443)
    2a04:4e42:600::262: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 4 of 4 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://fastly.net/ via 2a04:4e42::262 -> HTTP 301, certificate: valid
    https://www.fastly.com/ via 2a04:4e42::313 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/dCTJOsaObC

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

Checked 2026-10-30 17:17:02 UTC. Full DNS report: dns.pizza/domain/fastly.net · JSON: /api/v1/fastly.net