title: python module for nslookup
body: <p>Is there a python-module that's doing the same stuff as nslookup does?
  I am planning to use nslookup on digging some information regarding the domain of a URL to be scrapped. I know I can use os.sys to call nslookup but I am just wondering if there is a python-module for this already.
  Thanks in advance!</p>