How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

Solution 1:

Why would you assume a range of 106 - 113? Just because it only supports up to 8 clients doesn't mean it'll only give out 8 IP addresses. The # of possible devices connected is 1) an option for security and 2) hardware limitations of the networking interface (even dedicated SOHO routers can be found with client limits of 4-10).

The DHCP shouldn’t have limited addresses even though the hardware can’t support it.

It’ll thus assign any valid IP in the subnet, starting from your beginning range. In this case, 192.168.1.106-254. There’s no reason they have to be assigned in order.

Since you’ve given no indication of the IP range being subnetted, it’s safe to assume that the valid addresses are 192.168.1.2-254, with addresses only being eliminated by your starting range.

The reason for this starting range is usually far some arbitrary way of sorting devices. Say you want DHCP for dynamic clients to use the 128-254 range, because you have your certain static devices in the 2-127 range. This way forgoes subnetting, but still lets you know at a glance if you're dealing with a static or dynamic client.