Spain was offline

Netcraft:

[snip]

A botched software update at Spain's central domain registry knocked as
many as 400,000 sites offline for several hours Tuesday, according to
the Esnic registry. The error left Internet users unable to access
domains using .es, the country code top-level domain for Spain.

[snip]

More:
http://news.netcraft.com/archives/2006/08/30/thousands_of_spanish_web_sites_knocked_offline_by_software_error.html

- ferg