SNMP host addition

I’ve got a lot of servers (I’m going to guess 800) that I need to add an IP address to the SNMP host that it can accept packets from. I found where in the Reg that it’s located (HKLM\SYSTEM\CurrentControlSet\Services\SNMP\Parameters\PermittedManagers) But I noticed that it’s not just a normal entry becuase some may have 1 entry and others may have 7 entries. So how do I go about creating a way that I can mass deploy this since the next number in that key is going to be different on a lot of the manchines?