---
name: subnet-calculator
description: "IP/Subnet Calculator (IP/Subnet Calculator) via devops.majbase.com's free public API, no key required. Keywords: ip subnet mask calculator, cidr calculator, network address calculator, subnet mask."
---

# IP/Subnet Calculator

IP/Subnet Calculator. Calls devops.majbase.com's free public API — no API key or authentication required.

## Endpoint

```
GET/POST https://devops.majbase.com/subnet-calculator/api
```

## Request / Response

```
API: GET or POST /subnet-calculator/api
  cidr=<string>    (required, e.g. "192.168.1.10/24" or "2001:db8::1/64";
                     prefix defaults to /32 or /128 if omitted)
Returns network_address, broadcast_address (IPv4 only), netmask,
wildcard_mask, total_addresses, usable_hosts_count, first_usable,
last_usable, is_private.
```

## Example

```bash
curl -sS "https://devops.majbase.com/subnet-calculator/api?cidr=192.168.1.10/24"
```

## Notes

- No API key or authentication required.
- Full interactive tool: https://devops.majbase.com/subnet-calculator/