Yes — branch.io has IPv6.

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

B
IPv6 readiness
Works over IPv6, with one gap: www doesn't fully work over IPv6.
Website over IPv6
branch.io has 4 IPv6 addresses and answers on every one we tested (4 more not tested).
✓ 2600:9000:215a:1e00:e:6c93:2e80:93a1 answers · 443✓ 2600:9000:215a:6a00:e:6c93:2e80:93a1 answers · 443✓ 2600:9000:215a:5000:e:6c93:2e80:93a1 answers · 443✓ 2600:9000:215a:9000:e:6c93:2e80:93a1 answers · 443– 2600:9000:215a:4600:e:6c93:2e80:93a1 not tested– 2600:9000:215a:9e00:e:6c93:2e80:93a1 not tested– 2600:9000:215a:e00:e:6c93:2e80:93a1 not tested– 2600:9000:215a:8000:e:6c93:2e80:93a1 not tested
yes
www over IPv6
www.branch.io has no AAAA record.		no
Mail servers (MX) have IPv6
Every mail server has an AAAA record.
aspmx.l.google.com ✓aspmx2.googlemail.com ✓aspmx3.googlemail.com ✓alt1.aspmx.l.google.com ✓alt2.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.
ns-1091.awsdns-08.org ✓ns-1809.awsdns-34.co.uk ✓ns-236.awsdns-29.com ✓ns-991.awsdns-59.net ✓
yes
HTTPS over IPv6 · not part of the grade yet
Redirects to www.branch.io, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all.
https://branch.io/ via 2600:9000:215a:1e00:e:6c93:2e80:93a1 → 301https://www.branch.io/ · redirects to www.branch.io, which has no IPv6 address
problem
 Load branch.io over IPv6 from up to six other places — a second opinion.

What's keeping branch.io from an A

  1. www.branch.io is an alias of aeqnlksja9ay.wpeproxy.com, which has no IPv6
    www.branch.io is a CNAME, so it can't also have its own AAAA record. Ask whoever runs aeqnlksja9ay.wpeproxy.com to enable IPv6 there — or replace the alias with the A and AAAA records they give you. Why some hosts don't offer IPv6
  2. A redirect leads off IPv6
    Redirects to www.branch.io, which has no IPv6 address — so IPv6 visitors end up needing IPv4 after all. Give the redirect target IPv6 too, or redirect somewhere that has it.

Check again

branch.io  Has IPv6

A (IPv4)52.85.193.107
52.85.193.50
52.85.193.23
52.85.193.101
AAAA (IPv6)2600:9000:215a:1e00:e:6c93:2e80:93a1
2600:9000:215a:6a00:e:6c93:2e80:93a1
2600:9000:215a:5000:e:6c93:2e80:93a1
2600:9000:215a:9000:e:6c93:2e80:93a1
2600:9000:215a:4600:e:6c93:2e80:93a1
2600:9000:215a:9e00:e:6c93:2e80:93a1
2600:9000:215a:e00:e:6c93:2e80:93a1
2600:9000:215a:8000:e:6c93:2e80:93a1

www.branch.io  IPv4 only

Alias ofaeqnlksja9ay.wpeproxy.com
A (IPv4)141.193.213.20
141.193.213.21
AAAA (IPv6)none

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/DMjxeYD4c2 · How we measure

Checked 2026-10-30 20:04:33 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/branch.io · JSON: /api/v1/branch.io