Quick Searches:
IP blocks209.91.128 or 209. 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 blocks209.92.128/30
or 209.92.128.0/30
Lists all /30's beginning with 209.91.128 or checks for an exact match for 209.92.128.0/30 respectively
IP address209.92.128.30Finds the alloction that IP is a part of (if any)
Customer ID:705 or 6137328844 or 503101Find all alloctions to that customer. Matches on prefix (area code, area code + exchange, etc). Searches old as well as new CustIDs.
Description:cable or efniFind all allocations with the search term in the description. Note that searches for CustIDs with letters will fall under this category until CustIDs are all-numeric.
A blank query will "show all"
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Subnet Calculator
/   Show subnet mask, wildcard mask, and possible subnet ranges for the entered mask length.