# DHCP Pool A DHCP pool is a collection of [IP addresses](/glossary/i/ip_address) available for [DHCP](/glossary/d/dhcp) allocation. The **Pool Start** number is the first available number in the pool. The **Pool Size** is the count of available numbers, counting from the pool start. Example: with Pool Start of `50` and a Pool Size of `100`, the available pool addresses are `50` to `150`.