Dig Dns, Backrace, Whois Check, HTTP Get & many usefull Network tools:

http://net.musicinfo.org

Major Functions:
# multidomain & IP/AS whois lookups
# autodiscovery for whois TLD server
# DNS and Dig (ANY, SOA, NS, MX) queries
# email address format & MX validation
# port check with services lookup option
# HTTP HEAD and GET requests
# ICMP pings (local and/or remote)
# traceroutes (local and/or remote)
# looking glass router interrogation

Use this link for checking any domain delegation:

http://dig.musicinfo.org

This Tools Can Become Handy To Most Of The People "Wondering"
Around On The Net And Need Some Checks Made Up - NJOY