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Filename : check-dns-availability.rst

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**To check the availability of a CNAME**

The following command checks the availability of the subdomain ``my-cname.elasticbeanstalk.com``::

  aws elasticbeanstalk check-dns-availability --cname-prefix my-cname

Output::

  {
      "Available": true,
      "FullyQualifiedCNAME": "my-cname.elasticbeanstalk.com"
  }