elmundo.es publishes IPv6 but doesn't answer on it.

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

This is a saved measurement from 2026-10-31 09:39 UTC. Check elmundo.es live now

IPv6 readiness

Publishes IPv6 but doesn't answer on it — worse than having none.

Website over IPv6 elmundo.es has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4. ✗ 2001:67c:2294:1000::f199 no answer	broken
www over IPv6 www.elmundo.es has no AAAA record.	no
Mail servers (MX) have IPv6 Every mail server has an AAAA record. elmundo-es.mail.protection.outlook.com ✓	yes
Nameservers have IPv6 4 of 4 nameservers checked have an AAAA record, so IPv6-only resolvers can look the domain up. ns1-02.azure-dns.com ✓ns2-02.azure-dns.net ✓ns3-02.azure-dns.org ✓ns4-02.azure-dns.info ✓	yes

What's keeping elmundo.es from an A

Fix or remove the AAAA record for elmundo.es
Something published an IPv6 address but nothing answers on it, so IPv6 visitors wait for a timeout first. Either make the server listen on IPv6 (and allow ports 443/80 through its firewall), or delete the AAAA record until it does.
www.elmundo.es is an alias of unidadeditorial.map.fastly.net, which has no IPv6
www.elmundo.es is a CNAME, so it can't also have its own AAAA record. Ask whoever runs unidadeditorial.map.fastly.net to enable IPv6 there — or replace the alias with the A and AAAA records they give you. Why some hosts don't offer IPv6

Check again

elmundo.es Has IPv6

A (IPv4)	34.90.247.117
AAAA (IPv6)	2001:67c:2294:1000::f199

www.elmundo.es IPv4 only

Alias of	unidadeditorial.map.fastly.net
A (IPv4)	199.232.193.50 199.232.197.50
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

IPv6 measurement: elmundo.es
Measured 2026-10-31 09:39:06 UTC by aaaa.bot (one server on Fly.io, region iad)

A (IPv4):    34.90.247.117
AAAA (IPv6): 2001:67c:2294:1000::f199
www AAAA:    none

Readiness grade F: Publishes IPv6 but doesn't answer on it — worse than having none.
- Website over IPv6: elmundo.es has an AAAA record, but nothing answered on ports 443 or 80. IPv6 visitors wait for a timeout before falling back to IPv4.
    2001:67c:2294:1000::f199: no answer
- www over IPv6: www.elmundo.es has no AAAA record.
- Mail servers (MX) have IPv6: Every mail server has an AAAA record.
- Nameservers have IPv6: 4 of 4 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/-GB0Vpr0xk

Permanent link: aaaa.bot/r/-GB0Vpr0xk · How we measure

Checked 2026-10-31 09:39:06 UTC. Full DNS report: dns.pizza/domain/elmundo.es · JSON: /api/v1/elmundo.es