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I enabled multisite on my new project and have the following setup:

domain.com - central website shop.domain.com - store network.domain.com - BuddyPress install

Right now I need to add the following: countrydomain.com - website for different country and someday probably: countryb.com - additional country / countries

Long story short, I need to use multisite with additional domains and subdomains. Everything works perfectly with subdomains, but when I try to add another domain, the most I can achieve is extra domain redirecting to subdomain.

Is there a way to map the domain to one of the sites in the network and how can you acomplish this without 3d party plugins?

  • Try searching for ccTLDs, i know this has been possible in core since 4.2 – David Lee Feb 15 '17 at 14:10
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Here are the high level steps if you are on 4.2 or greater:

  1. Have your multisite hosted at a dedicated IP address.

  2. Go into your network dashboard My Sites > Network Admin > Sites and edit the site you want to map, by changing its url to http://example.com (no www).

  3. At the registrar for the domain, set an A record that points to the multisite dedicated IP address, and a CNAME record for WWW that points to the TLD for the domain (e.g. CNAME www.example.com -> example.com).

  4. In your wp-config.php file set this line: define( 'COOKIE_DOMAIN', '' );

Now, when you bring up www.example.com or example.com in the browser it will be serving up example.multisite.com - and nobody will ever know; 100% domain mapped success.

Note that if you want to go next level with this and be a mapping superstar, you'll need to use my instructions for leveraging AWS (or CloudFlare), and possibly running white-label nameservers. With that scenario you don't even need the multisite at a dedicated IP address since you'd be using the AWS augmented "alias" record...but I still have mine at a dedicated IP address because some clients will still want to run DNS externally (e.g. Microsoft Office online...).

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