What this calculator does:

Single Supernet CIDR mode finds the smallest single CIDR block that covers all of the subnets you enter.
CIDR Aggregation mode merges your list into the minimal set of non-overlapping CIDR prefixes.

How to use:

• Select your calculation mode at the top.
• Enter each existing subnet in CIDR format (e.g., 10.0.1.0/24).
• Click + Add Subnet to add more lines or remove rows manually in your form post-handler.
• Hit Calculate Supernet.
• In Supernet mode you’ll see the single enclosing CIDR, its network address, mask, and host range.
  In Aggregate mode you’ll get a bullet-list of the minimal aggregated CIDR blocks.
• Optionally integrate or export those results as needed.