subnet ownership

you can figure out who owns an ip subrange by issuing the following command from unix:

whois -h whois.arin.net $ip_addr


example:

$ ping google.com
PING google.com (216.239.57.99) from 192.168.1.102 : 56(84) bytes of data.
64 bytes from 216.239.57.99: icmp_seq=0 ttl=238 time=148.632 msec

--- google.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max/mdev = 148.632/148.632/148.632/0.000 ms
[mike@localhost mike]$ whois -h whois.arin.net 216.239.57.99
[whois.arin.net]

OrgName: Google Inc.
OrgID: GOGL
Address: 2400 E. Bayshore Parkway
City: Mountain View
StateProv: CA
PostalCode: 94043
Country: US

NetRange: 216.239.32.0 - 216.239.63.255
CIDR: 216.239.32.0/19
NetName: GOOGLE
NetHandle: NET-216-239-32-0-1
Parent: NET-216-0-0-0-0
NetType: Direct Allocation
NameServer: NS1.GOOGLE.COM
NameServer: NS2.GOOGLE.COM
NameServer: NS3.GOOGLE.COM
NameServer: NS4.GOOGLE.COM
Comment:
RegDate: 2000-11-22
Updated: 2001-05-11

TechHandle: ZG39-ARIN
TechName: Google Inc.
TechPhone: +1-650-318-0200
TechEmail: arin-contact@google.com

OrgTechHandle: ZG39-ARIN
OrgTechName: Google Inc.
OrgTechPhone: +1-650-318-0200
OrgTechEmail: arin-contact@google.com

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