title: Query DNS to find NAPTR in iOS
body: <p>I have been having a lot of trouble finding a way to query the DNS to find the NAPTR in iOS.  There seem to be many relatively simple ways to resolve to an IP, but I specifically need to find all NAPTR records in a DNS lookup.  I'd prefer to do so without having to bring in any external libraries if at all possible.  If anyone has been able to do this (or something similar that I can extrapolate from) I'd appreciate any pointers.</p>
  
  <p>All code must function in iOS 5.0+</p>