Yes — avast.com has IPv6.

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

A
IPv6 readiness
Website, mail and DNS all work over IPv6.
Website over IPv6
avast.com has 2 IPv6 addresses and answers on every one we tested.
✓ 2600:1408:5400:e95::21c7 answers · 443✓ 2600:1408:5400:e8f::21c7 answers · 443
yes
www over IPv6
www.avast.com has 2 IPv6 addresses and answers on every one we tested.
✓ 2600:1408:c400:392::21c7 answers · 443✓ 2600:1408:c400:38b::21c7 answers · 443
yes
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
avast-com.mail.protection.outlook.com ✓
yes
Nameservers have IPv6
6 of 6 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up.
a13-65.akam.net ✓a6-67.akam.net ✓a1-182.akam.net ✓a20-66.akam.net ✓a11-66.akam.net ✓a26-67.akam.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.
https://avast.com/ via 2600:1408:5400:e95::21c7 → 301https://www.avast.com/ via 2600:1408:c400:392::21c7 → 403
works
 Load avast.com over IPv6 from up to six other places — a second opinion.

Nothing keeping you from an A

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

Check again

avast.com  Has IPv6

A (IPv4)23.35.29.115
AAAA (IPv6)2600:1408:5400:e95::21c7
2600:1408:5400:e8f::21c7

www.avast.com  Has IPv6

Alias ofwww.avast.com-2.edgekey.net → e8647.dsca.akamaiedge.net
A (IPv4)23.35.29.115
AAAA (IPv6)2600:1408:c400:392::21c7
2600:1408:c400:38b::21c7

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

 Permanent link: aaaa.bot/r/O9lTM4eLCa · How we measure

Checked 2026-10-30 20:04:30 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/avast.com · JSON: /api/v1/avast.com