rackerlabs/satori — pull request #13 by brint (2014-03-01 03:32:14+00:00)
Title: If whois information is incomplete, silently exclude it from output.

This covers two DNS related circumstances:
* `whois` servers may not include information related to expiration. `.pe` is one example
* `whois` servers may throttle requests due to volume or for other reasons. In these cases, the list of name servers will not be available.