Subnet Splitter¶
The subnet splitter divides a network into equal-sized sub-networks.
IPv4¶
After calculating an IPv4 result, the Split Subnet panel appears. Enter the desired sub-prefix (e.g. /26 to split a /24 into four /26s) and click Split.
Results are displayed as a list of CIDRs with:
- A per-row copy button
- Copy All — copies all CIDRs as newline-separated text
- Export ASCII — builds a plaintext tree and copies it to the clipboard
The maximum number of results is controlled by $split_max_subnets in config.php (default 16). When the total exceeds this limit a note is shown. The value is clamped to the range 1–256.
IPv6¶
The IPv6 splitter works identically and appears after an IPv6 result. For splits where the prefix difference is ≥ 63, the count is displayed as 2^N to avoid integer overflow.