On 6 Dec 99, 16:41, Brian L. Johnson wrote:

> Is there a way to find out all the class C IP blocks (the first
> three groups of the IP, eg 111.111.111.???) that an ISP owns? I somehow
> don't think that they'd tell me if I called them, so I have to resort to
> outside means...

Read your "man nslookup".  UNIX nslookup is more powerful that it would 
seem on the surface.

-------------------------

west21:~$ nslookup -all pcisys.net
Default Server:  (null)

Set options:
  nodebug         defname         search          recurse
  nod2            novc            noignoretc      port=53
  querytype=A     class=IN        timeout=5       retry=4
  root=a.root-servers.net.
  domain=host4u.net
  srchlist=host4u.net

Server:  ns2.host4u.net
Address:  209.150.128.15

Non-authoritative answer:
Name:    pcisys.net
Address:  207.76.102.251

---------

So just one IP is given for pcisys.net .  Had they had more, the 
nslookup would show it there.  

COS...

Did you get your "dot dun" file to your techies?  We never heard back 
from you.

Alan
[EMAIL PROTECTED]

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