Ping to a.root-servers.net - Verisign - IPV4 - AS19836
Ping to b.root-servers.net - USC-ISI - IPV4 - AS394353
Ping to c.root-servers.net - Cogent - IPV4 - AS2149
Ping to d.root-servers.net - UMD - IPV4 - AS10886
Ping to e.root-servers.net - NASA - IPV4 - AS21556
Ping to f.root-servers.net - ISC - IPV4 - AS30132
Ping to h.root-servers.net - ARL - IPV4 - AS1508
Ping to i.root-servers.net - Netnod - IPV4 - AS29216
Ping to j.root-servers.net - Verisign - IPV4 - AS26415
Ping to k.root-servers.net - RIPE NCC - IPV4 - AS25152
Ping to l.root-servers.net - ICANN - IPV4 - AS20144
Ping to m.root-servers.net - WIDE Project - IPV4 - AS7500
