Yes — outlookbest.com has IPv6.

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

Measured 2026-11-01 07:36 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check outlookbest.com now

C
IPv6 readiness
Works over IPv6, with gaps: one of its IPv6 addresses doesn't answer; www doesn't fully work over IPv6; its nameservers lack IPv6.
Website over IPv6
2 of 4 IPv6 addresses for outlookbest.com don't answer. Visitors sent to those wait for a timeout before falling back.
✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443✓ 2406:da1e:214:c901:49:871:e9e1:eb92 answers · 443✗ 2600:1f1c:6db:8800:3874:4c01:cb9:391f no answer✗ 2600:1f1c:6db:8801:7620:4565:8dce:8b5a no answer– 2600:1f1c:6db:8801:9173:d91:a3b8:2148 not tested– 2600:1f1c:6db:8800:79cb:1ef5:7739:e6be not tested– 2600:1f1c:6db:8801:5056:7a82:ae7e:8cec not tested– 2600:1f1c:6db:8801:b190:5302:8b46:f792 not tested
partly
www over IPv6
2 of 4 IPv6 addresses for www.outlookbest.com don't answer. Visitors sent to those wait for a timeout before falling back.
✓ 2a05:d018:1d22:801:a216:a799:8c87:df21 answers · 443✓ 2406:da1e:214:c901:49:871:e9e1:eb92 answers · 443✗ 2600:1f1c:6db:8800:3874:4c01:cb9:391f no answer✗ 2600:1f1c:6db:8801:7620:4565:8dce:8b5a no answer– 2600:1f1c:6db:8801:9173:d91:a3b8:2148 not tested– 2600:1f1c:6db:8800:79cb:1ef5:7739:e6be not tested– 2600:1f1c:6db:8801:5056:7a82:ae7e:8cec not tested– 2600:1f1c:6db:8801:b190:5302:8b46:f792 not tested
partly
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
No nameserver has an AAAA record — an IPv6-only resolver can't reach this domain's DNS.
ns1.dns-redirect.com ✗ns2.dns-redirect.com ✗
no

First measured 2026-11-01; last confirmed 2026-11-01.

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 1 redirect: HTTP 403.
https://outlookbest.com/ via 2a05:d018:1d22:801:a216:a799:8c87:df21 → 301https://expireddomains.com/domain/outlookbest.com?utm_source=redi via 2606:4700:20::681a:f7a → 403
works
 Load outlookbest.com over IPv6 from up to six other places — a second opinion.

What's keeping outlookbest.com from an A

  1. One of outlookbest.com's IPv6 addresses doesn't answer
    2600:1f1c:6db:8800:3874:4c01:cb9:391f, 2600:1f1c:6db:8801:7620:4565:8dce:8b5a didn't accept a connection on 443 or 80 while others did. Remove them from DNS or fix that server — browsers that pick one wait for a timeout.
  2. One of www.outlookbest.com's IPv6 addresses doesn't answer
    2600:1f1c:6db:8800:3874:4c01:cb9:391f, 2600:1f1c:6db:8801:7620:4565:8dce:8b5a didn't accept a connection on 443 or 80 while others did. Remove them from DNS or fix that server — browsers that pick one wait for a timeout.
  3. Nameservers without IPv6
    ns1.dns-redirect.com, ns2.dns-redirect.com all have no AAAA record, so a resolver that only speaks IPv6 can't look your domain up. Most DNS providers offer IPv6 nameservers; ask yours, or move DNS to one that does.

Check again

outlookbest.com  Has IPv6

A (IPv4)76.223.91.20
5.78.156.59
5.161.230.87
5.161.47.86
46.62.237.138
195.201.128.179
AAAA (IPv6)2a05:d018:1d22:801:a216:a799:8c87:df21
2406:da1e:214:c901:49:871:e9e1:eb92
2600:1f1c:6db:8800:3874:4c01:cb9:391f
2600:1f1c:6db:8801:7620:4565:8dce:8b5a
2600:1f1c:6db:8801:9173:d91:a3b8:2148
2600:1f1c:6db:8800:79cb:1ef5:7739:e6be
2600:1f1c:6db:8801:5056:7a82:ae7e:8cec
2600:1f1c:6db:8801:b190:5302:8b46:f792

www.outlookbest.com  Has IPv6

A (IPv4)76.223.91.20
46.62.237.138
5.161.47.86
5.161.230.87
195.201.128.179
5.78.156.59
AAAA (IPv6)2a05:d018:1d22:801:a216:a799:8c87:df21
2406:da1e:214:c901:49:871:e9e1:eb92
2600:1f1c:6db:8800:3874:4c01:cb9:391f
2600:1f1c:6db:8801:7620:4565:8dce:8b5a
2600:1f1c:6db:8801:9173:d91:a3b8:2148
2600:1f1c:6db:8800:79cb:1ef5:7739:e6be
2600:1f1c:6db:8801:5056:7a82:ae7e:8cec
2600:1f1c:6db:8801:b190:5302:8b46:f792

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/qoZbl36rwE · How we measure

Checked 2026-11-01 07:36:23 UTC. Full DNS report: dns.pizza/domain/outlookbest.com · Age, certificate and blocklists: how.is/outlookbest.com · JSON: /api/v1/outlookbest.com