Nice idea, I could really use this sometimes. However, when I search for namemon...

tectonic · on July 13, 2013

It's pretty accurate, with about a 24 hour delay. Namemonk was registered yesterday and hasn't been updated in the root data dump from Verisign yet.

mariocesar · on July 13, 2013

Also says domicilio.com is available. I think it's using simple dns lookups, if you made a whois call to the domain you will see that the domain is registered but is not in use.

jffry · on July 13, 2013

His FAQ page says the data is refreshed every 24 hours.

  > whois namemonk.com
  ...
  Creation date: 13 Jul 2013 03:26:00
  Expiration date: 13 Jul 2014 03:26:00