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Your address is .

Use this form to calculate the number of subnets (N) of a given subnet prefix length (S) you can obtain from a given aggregate prefix length (A).

Aggregate prefix length (A):  / (decimal value, 0 - 127)
Subnet prefix length (S):  / (decimal value, 1 - 128, greater than above (may be inaccurate for diff >54 bits))
Available subnets (N):
Aggregate prefix mask:
Aggregate wildcard mask:
Subnet prefix mask:
Subnet wildcard mask:
Aggregate / Subnet XOR:


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The current time is 2014-11-24 02:18:13 UTC (+0000).
This page was last modified on 2011-06-08 19:10:20 UTC (+0000).
This page has received 55017 hits since January 14 2011.