python根据ip地址反向查找主机名称

python根据ip地址反向查找主机名称

import sys, socket

try:
    result = socket.gethostbyaddr("66.249.71.15")
    print "Primary hostname:"
    print "  " + result[0]

    # Display the list of available addresses that is also returned
    print "\nAddresses:"
    for item in result[2]:
        print "  " + item
except socket.herror, e:
    print "Couldn't look up name:", e

上面的代码执行后返回：

Primary hostname:
  crawl-66-249-71-15.googlebot.com

Addresses:
  66.249.71.15