Yes — notion.so has IPv6.

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

Measured 2026-11-01 14:51 UTC. We reuse a result for up to a week, so we aren't testing the same site over and over. Check notion.so now

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 notion.so has 4 IPv6 addresses and answers on every one we tested. ✓ 2602:f79a::1 answers · 443✓ 2602:f79a:0:1::1 answers · 443✓ 2602:f79a::2 answers · 443✓ 2602:f79a:0:1::2 answers · 443	yes
www over IPv6 www.notion.so has 4 IPv6 addresses and answers on every one we tested. ✓ 2602:f79a:0:1::2 answers · 443✓ 2602:f79a:0:1::1 answers · 443✓ 2602:f79a::1 answers · 443✓ 2602:f79a::2 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. dana.ns.cloudflare.com ✓woz.ns.cloudflare.com ✓	yes

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 200.

https://notion.so/ via 2602:f79a::1 → 301https://www.notion.so/ via 2602:f79a:0:1::2 → 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/notion.so.svg)](https://aaaa.bot/notion.so)

Check again

notion.so Has IPv6

A (IPv4)	208.103.161.1 208.103.161.2 208.103.161.17 208.103.161.16
AAAA (IPv6)	2602:f79a::1 2602:f79a:0:1::1 2602:f79a::2 2602:f79a:0:1::2

www.notion.so Has IPv6

A (IPv4)	208.103.161.16 208.103.161.17 208.103.161.2 208.103.161.1
AAAA (IPv6)	2602:f79a:0:1::2 2602:f79a:0:1::1 2602:f79a::1 2602:f79a::2

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: notion.so
Measured 2026-11-01 14:51:09 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    208.103.161.1, 208.103.161.2, 208.103.161.17, 208.103.161.16
AAAA (IPv6): 2602:f79a::1, 2602:f79a:0:1::1, 2602:f79a::2, 2602:f79a:0:1::2
www AAAA:    2602:f79a:0:1::2, 2602:f79a:0:1::1, 2602:f79a::1, 2602:f79a::2

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: notion.so has 4 IPv6 addresses and answers on every one we tested.
    2602:f79a::1: answers (TCP 443)
    2602:f79a:0:1::1: answers (TCP 443)
    2602:f79a::2: answers (TCP 443)
    2602:f79a:0:1::2: answers (TCP 443)
- www over IPv6: www.notion.so has 4 IPv6 addresses and answers on every one we tested.
    2602:f79a:0:1::2: answers (TCP 443)
    2602:f79a:0:1::1: answers (TCP 443)
    2602:f79a::1: answers (TCP 443)
    2602:f79a::2: 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 after 1 redirect: HTTP 200.
    https://notion.so/ via 2602:f79a::1 -> HTTP 301, certificate: valid
    https://www.notion.so/ via 2602:f79a:0:1::2 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/yHy5bCued_

Permanent link: aaaa.bot/r/yHy5bCued_ · How we measure

Checked 2026-11-01 14:51:09 UTC. Full DNS report: dns.pizza/domain/notion.so · JSON: /api/v1/notion.so