Quick Searches:
IP blocks192.168.28 or 192. Lists all alloctions starting with that set of octets. Note that matches on the first octet MUST include the period to be considered an IP search.
CIDR blocks192.168.28/30
Lists all /30's beginning with 192.168.28 or checks for an exact match for respectively
IP address192.168.28.30Finds the alloction that IP is a part of (if any)
Customer ID:123456Find all alloctions to that customer. Customer IDs are assumed to be numeric for this search.
Description:cable or BigCustomerFind all allocations with the search term in the description. Note that searches for CustIDs with letters will fall under this category unless CustIDs are all-numeric.
A blank query will "show all"
The title in the top right hand corner is a link home.
Subnet Calculator
/   Show subnet mask, wildcard mask, and possible subnet ranges for the entered mask length.