Traceroute
Traceroute from Level 3 sites:
Traceroute allows a user
to follow a packet through the network to a specific
destination. It shows the domain, IP address, and the roundtrip
packet times for three successive probes as it traces the route to
a specified destination.
Ping
Ping from Level 3 sites:
Packet InterNet Groper; This tool can be used to show whether or
not a device with a valid internet address or domain name can return
packets sent to it by a specified Level 3 PING server.
BGP
BGP table query from Level 3 sites:
This tool shows the BGP routing table used for
a given route on the Level 3 network.
WHOIS
Whois query:
This tool allows users to find contact information for
the administrator(s) of a specific domain.