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IPInfoOffline
IPInfoOffline Allows you to view information about IP addresses....
block.exe
This tool allows a user to query ARIN database for their ISP's IP block. The utility is only about 37k in size and is easy to use....
zwhois
Zwhois is a fast and efficient open-source utility that looks up ownership, expiration, and dns information for domains in any tld, ips, or ARIN net-handles....
expiration expiration notification ARIN information about domains Ownership
WhoIs Express
An ULTRA FAST Winsock Utility perfect for LAN administrators....