revdns

Attempt to perform a reverse DNS lookup on a list of IP addresses.

Usage

Usage of revdns:
  -c uint
    	number of concurrent requests to make (default 10)
  -f string
    	file containing list of ips, defaults to stdin if omitted
  -v	log errors to stdout

Example

cat ips | revdns -c=15 | tee -a ip.hosts