Red.es seems to be a Spanish telecommunications provider. They say they're "responsible for the .es TLD:
Dominos ".es" is responsible for managing the Internet Domain Names Registry for the country code ".es". The registry management tasks include processing applications and assigning new domains.
It is a part of the public business entity Red.es.
ICANN seems to agree. It looks like they sell their own SSL certificates for domains, and so they'd need a root certificate on your computer - otherwise, your browser would complain.
If you don't visit .es websites often, I'd be inclined to disable that certificate. It's one more company that, if infiltrated, their root certificate could* be used to impersonate any website. Like, say... this one.
*I'm not entirely sure about that last one, I'm not an expert on certificate chains. It's possible that this root CA is only valid for
*.es domains. Not sure.