No — mx.doordash.com is IPv4 only.

Has an IPv4 address but no IPv6 (AAAA) record. IPv6-only visitors can't reach it directly.

IPv6 readiness

The website has no IPv6.

Website over IPv6 mx.doordash.com has no AAAA record.	no
www over IPv6 www.mx.doordash.com has no AAAA record.	no
Mail servers (MX) have IPv6 No MX records, so mail goes to the domain's own address (implicit MX). It has no AAAA record.	no
Nameservers have IPv6 2 of 2 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns1.doordash.com ✓ns2.doordash.com ✓	yes

What's keeping mx.doordash.com from an A

mx.doordash.com is an alias of mkto-ab390043.com, which has no IPv6
mx.doordash.com is a CNAME, so it can't also have its own AAAA record. Ask whoever runs mkto-ab390043.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
Add IPv6 for www.mx.doordash.com
www.mx.doordash.com has no AAAA record. Get www's IPv6 address from whoever hosts www and add it as an AAAA record. If the same server already serves both names (and its certificate covers www), you can reuse mx.doordash.com's AAAA record(s) for www. How to add an AAAA record
Mail servers without IPv6
Your domain's mail goes to its own address, which has no AAAA record.

Check again

mx.doordash.com IPv4 only

Alias of	mkto-ab390043.com
A (IPv4)	104.17.72.206 104.17.73.206 104.17.71.206 104.17.74.206 104.17.70.206
AAAA (IPv6)	none

www.mx.doordash.com No address

A (IPv4)	none
AAAA (IPv6)	none

What this means

Visitors on IPv6-only networks (many mobile carriers) can still reach it, but only through a translator their carrier runs (NAT64). The site itself has no IPv6 address — and you can't make one up from the IPv4. Why some hosts don't offer it

Copy the evidence — a citation-ready record of this measurement

IPv6 measurement: mx.doordash.com
Measured 2026-11-02 15:47:42 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    104.17.72.206, 104.17.73.206, 104.17.71.206, 104.17.74.206, 104.17.70.206
AAAA (IPv6): none
www AAAA:    none

Readiness grade D: The website has no IPv6.
- Website over IPv6: mx.doordash.com has no AAAA record.
- www over IPv6: www.mx.doordash.com has no AAAA record.
- Mail servers (MX) have IPv6: No MX records, so mail goes to the domain's own address (implicit MX). It has no 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).
No TLS or HTTP request was made.
DNS answers via DNS-over-HTTPS (Cloudflare). Method: https://aaaa.bot/method
Permanent link: https://aaaa.bot/r/YVBfXnvX42

Permanent link: aaaa.bot/r/YVBfXnvX42 · How we measure

Checked 2026-11-02 15:47:42 UTC. Full DNS report: dns.pizza/domain/mx.doordash.com · JSON: /api/v1/mx.doordash.com