Question : Wrong DNS entry in IPCONFIG /ALL

Hello,

I have a domain setup and when I run ipconfig /all I see a list of all my dns servers that my router has listed.  The problem is, one of the IP addresses is incorrect and its not listed in my router, or DNS server anywhere.  I talked to my ISP and its not one of their servers either.

I've cleared the DNS cache, restarted the DNS servers, cleared DNS cache off of the client pc and updated DNS, I'm still getting this 'ghost' dns IP.  The IP isn't pingable, NSlookup doesn't show it, I'm not sure where it came from.

IS there anywhere else it could pull this IP from?  We use DHCP and it shows on every machine in my domain, I just can't find this IP address anywhere.

Answer : Wrong DNS entry in IPCONFIG /ALL

in windows dhcp it will be under scope->scope options. Also is this on all machines or just one?