href lang accross multiple territories + unique domains

[davidcooper375]

Scenario
I have the following sites:
http://subdomain.mainurl.com/es
http://subdomain.mainurl.es

.es needs to rank in Spain only with .com/es ranking in every other Spanish speaking territory.

Would adding multiple 'href lang' tags similar to the below work?

http://subdomain.mainurl.com/es Example

<link rel="alternate" hreflang="es-es" href="http://subdomain.mainurl.es " />

http://subdomain.mainurl.es Example

<link rel="alternate" hreflang="es-mx" href="http://subdomain.mainurl.com/es " />
<link rel="alternate" hreflang="es-ar" href="http://subdomain.mainurl.com/es " />

Thoughts appreciated.

[edited by: tedster at 8:24 pm (utc) on Sep 18, 2012]
[edit reason] make examples display in full [/edit]

[tedster]

Welcome to the forums, David.

This kind of issue seems to have no "sure thing" solution. But it looks to me like you've got a good idea, based on what I've seen.

There's a lot of relevant information in this Google Blog article [googlewebmastercentral.blogspot.com]

[phranque]

welcome to WebmasterWorld, davidcooper375!

that looks right to me.

a few google references i've bookmarked...

rel="alternate" hreflang="x" - Webmaster Tools Help:
http://support.google.com/webmasters/bin/answer.py?hl=en&answer=189077 [support.google.com]

Official Google Webmaster Central Blog: New markup for multilingual content:
http://googlewebmastercentral.blogspot.com/2011/12/new-markup-for-multilingual-content.html [googlewebmastercentral.blogspot.com]

Official Google Webmaster Central Blog: Unifying content under multilingual templates:
http://googlewebmastercentral.blogspot.com/2010/09/unifying-content-under-multilingual.html [googlewebmastercentral.blogspot.com]

[davidcooper375]

Thanks for the feedback.

I'm yet to find any evidence/info that confirms multiple href lang tags for the same URL. All sources I found use territory specific URLs.