ARIN: WHOIS Database Search

PSINet, Inc. PSI-192-77-BLK2 (NET-192-77-192-0-1) 
                                  192.77.192.0 - 192.77.223.255
Pfizer NET-192-77-198-0-1 (NET-192-77-198-0-1) 
                                  192.77.198.0 - 192.77.198.255

# ARIN WHOIS database, last updated 2010-02-08 20:00
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ARIN WHOIS Database Search