Which machine is my DHCP server ?

[Kevin Hawkins <lists@xxxxxxxxxxxxxxxxx>]

Can someone tell me an easy way to find out from Windows which
machines/devices (by IP) are running a DHCP server on my network ??

A couple of devices have acquired addresses by DHCP but they don't show
in my main Vigor routers DHCP assigned addresses and they appear not to
have picked up the correct DNS server address as they can't resolve
addresses. But I've no idea where they are getting their addresses from
as it's not the expected place.

Kevin