Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time(RTT) for messages sent from the originating host to a destination computer and back. Ping is usually used to detect the actual internet speed and quality.
The following is the output of running ping under Linux for sending five probes to the target host www.yahoo.com
$ ping -c 5 www.yahoo.com PING www.yahoo.com (126.96.36.199) 56(84) bytes of data. 64 bytes from 188.8.131.52: icmp_req=1 ttl=47 time=22.8 ms 64 bytes from 184.108.40.206: icmp_req=2 ttl=47 time=22.3 ms 64 bytes from 220.127.116.11: icmp_req=3 ttl=47 time=22.8 ms 64 bytes from 18.104.22.168: icmp_req=4 ttl=47 time=22.2 ms 64 bytes from 22.214.171.124: icmp_req=5 ttl=47 time=22.2 ms --- www.yahoo.com ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 4005ms rtt min/avg/max/mdev = 22.228/22.503/22.853/0.316 ms
The utility summarizes its results after completing the ping probes. The shortest round trip time(RTT) was 22.228 ms, the average was 22.503 ms, and the maximum value was 22.853 ms. The measurement had a standard deviation of 0.316 ms.
With this free web tools, you can ping to any domain or IP address from worldwide locations and shows how long it takes for packets to reach host, and shows the ping results on Google Map.
Screenshot: Web-based ping to www.yahoo.com from worldwide location
Screenshot: Web-based ping to www.yahoo.com and shows the ping results on Google Map