From background noises caller clearly in a call centre. Claimed to be from Telstra Technical Division. Said my internet connection has problems. He gave his Telstra employee ID as TD860051 and told me that my router CLSID is 888DCA60-FC0A-11CF-8F0F-00C04FD7D062. My, these thieves are getting sophisticated! For those interested, that number can be found in the registry of every Windows computer. It has nothing to do with your router.