Bounded IP Address List Generator
Enumerate a selected, limited address range.
Bounded IP Address List Generator: inputs and results
Enter an IP address, CIDR prefix, or range. Then check its first and last address below.
Calculated Boundaries & ParametersReady
Key Capabilities
- •100% Client-Side: Zero telemetry or server latency.
- •RFC Compliant: Exact 32-bit and 128-bit integer precision.
- •Quick Copy: Instant access to CIDR, mask, and range bounds.
- •Cross-Platform: Works on desktop, tablet, and mobile browsers.
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How Bounded IP Address List Generator Works?
This tool works by stepping from the start address to the end address 1 integer at a time and writing each address on its own line, up to a fixed limit.
Enter a range or CIDR
Type
192.168.1.250 – 192.168.2.5or a prefix such as10.0.0.0/28.Set the limit
The generator caps output, for example at 4,096 lines, so a large prefix never floods the browser.
Choose filters
Options skip network and broadcast addresses or keep only usable hosts.
Generate the list
The tool prints one address per line, ready for copy or download as .txt or .csv.
Bounded IP Address List Generator Formula
The formula is List = { str(n) : int(Start) ≤ n ≤ min(int(End), int(Start) + Limit − 1) }.
Entries
min(End − Start + 1, Limit)Output length.
Kth entry
str(int(Start) + k)k from 0.
Truncated
End − Start + 1 > LimitOutput stops at the limit.
File size estimate
about 14 bytes per lineFor dotted IPv4 with a newline.
Worked example: 192.168.1.250 – 192.168.2.5
Entries = 12 Output crosses the octet boundary: 192.168.1.254, 192.168.1.255, 192.168.2.0, 192.168.2.1
Bounded IP Address List Generator Conversion Table
The table lists every address from 192.168.1.250 to 192.168.2.5, with the integer value of each.
| # | Address | Integer |
|---|---|---|
| 1 | 192.168.1.250 | 3,232,236,026 |
| 2 | 192.168.1.251 | 3,232,236,027 |
| 3 | 192.168.1.252 | 3,232,236,028 |
| 4 | 192.168.1.253 | 3,232,236,029 |
| 5 | 192.168.1.254 | 3,232,236,030 |
| 6 | 192.168.1.255 | 3,232,236,031 |
| 7 | 192.168.2.0 | 3,232,236,032 |
| 8 | 192.168.2.1 | 3,232,236,033 |
| 9 | 192.168.2.2 | 3,232,236,034 |
| 10 | 192.168.2.3 | 3,232,236,035 |
| 11 | 192.168.2.4 | 3,232,236,036 |
| 12 | 192.168.2.5 | 3,232,236,037 |
What is Bounded IP Address List Generator?
The Bounded IP Address List Generator is a tool that writes out every individual address in a range or prefix, with a maximum length to keep the output manageable.
Many tools need explicit address lists: scanners, ping sweeps, allow-list imports, and test fixtures. A /16 holds 65,536 addresses, and a /8 holds over 16 million. The limit protects the browser and makes clear when a list was cut short.
The generator crosses octet boundaries correctly. After 192.168.1.255, the next line is 192.168.2.0.
What are the uses of Bounded IP Address List Generator?
There are 4 main uses of the Bounded IP Address List Generator, including scan target lists, allow-list imports, and test data.
Building scan target lists
Authorized vulnerability scans import target files with 1 address per line.
Importing allow-lists
Systems that accept only single addresses receive the expanded list.
Creating test data
Developers generate address fixtures for unit tests.
Running ping sweeps
Scripts loop over the list to check which hosts respond.