Yes — deepl.com has IPv6.

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

IPv6 readiness

Website, mail and DNS all work over IPv6.

Website over IPv6 deepl.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2a06:98c1:3105::6812:247a answers · 443✓ 2a06:98c1:3108::ac40:9786 answers · 443	yes
www over IPv6 www.deepl.com has 2 IPv6 addresses and answers on every one we tested. ✓ 2a06:98c1:310b::6812:27d1 answers · 443✓ 2606:4700:4406::ac40:942f answers · 443	yes
Mail servers (MX) have IPv6 Every mail server has an AAAA record. smtp.google.com ✓	yes
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. michelle.ns.cloudflare.com ✓walt.ns.cloudflare.com ✓	yes

HTTPS over IPv6 · not part of the grade yet
Loads over IPv6 with a valid certificate after 2 redirects: HTTP 200.

https://deepl.com/ via 2a06:98c1:3105::6812:247a → 301https://www.deepl.com/ via 2a06:98c1:310b::6812:27d1 → 301https://www.deepl.com/en via 2a06:98c1:310b::6812:27d1 → 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/deepl.com.svg)](https://aaaa.bot/deepl.com)

Check again

deepl.com Has IPv6

A (IPv4)	104.18.36.122 172.64.151.134
AAAA (IPv6)	2a06:98c1:3105::6812:247a 2a06:98c1:3108::ac40:9786

www.deepl.com Has IPv6

A (IPv4)	172.64.148.47 104.18.39.209
AAAA (IPv6)	2a06:98c1:310b::6812:27d1 2606:4700:4406::ac40:942f

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: deepl.com
Measured 2026-10-31 03:04:34 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.18.36.122, 172.64.151.134
AAAA (IPv6): 2a06:98c1:3105::6812:247a, 2a06:98c1:3108::ac40:9786
www AAAA:    2a06:98c1:310b::6812:27d1, 2606:4700:4406::ac40:942f

Readiness grade A: Website, mail and DNS all work over IPv6.
- Website over IPv6: deepl.com has 2 IPv6 addresses and answers on every one we tested.
    2a06:98c1:3105::6812:247a: answers (TCP 443)
    2a06:98c1:3108::ac40:9786: answers (TCP 443)
- www over IPv6: www.deepl.com has 2 IPv6 addresses and answers on every one we tested.
    2a06:98c1:310b::6812:27d1: answers (TCP 443)
    2606:4700:4406::ac40:942f: answers (TCP 443)
- Mail servers (MX) have IPv6: Every mail server 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 2 redirects: HTTP 200.
    https://deepl.com/ via 2a06:98c1:3105::6812:247a -> HTTP 301, certificate: valid
    https://www.deepl.com/ via 2a06:98c1:310b::6812:27d1 -> HTTP 301, certificate: valid
    https://www.deepl.com/en via 2a06:98c1:310b::6812:27d1 -> HTTP 200, certificate: valid
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/7Ewf5PDOa6

Permanent link: aaaa.bot/r/7Ewf5PDOa6 · How we measure

Checked 2026-10-31 03:04:34 UTC — one of the top 1,000 sites, re-checked weekly. Re-check now. Full DNS report: dns.pizza/domain/deepl.com · JSON: /api/v1/deepl.com