I have been going though my DNS to check there are no issues I have found _msdcs, _sites, _tcp, _tls, _udp entries all fine but I have a 26 folder under my domain.org.uk too? Under the folder simply named "26" there is a "2" then a "140" and in there a host record name 10, data 10.140.2.26 which is the IP address of a HP lasrejet 4050??? Does anyone know what this entry could be? Could someone have put it in there manually?

Thanks
Duncan