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GeekVault CIDR Calculator
x402
GeekVault CIDR Calculator is a paid API for AI agents from api.geekvault.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-28).
Calculates all key IPv4 subnet details from a CIDR notation input, including network address, broadcast, netmask, host range, and address counts.
Price / call$0.002
Success—
StatusUnknown
How this service works
Network, docs, image, web, and dev utility tools paid per call via x402. No signup, no API keys, no subscriptions — just USDC on Base.
Output
Returns a JSON object with the original CIDR, network address, broadcast address, subnet mask, wildcard mask, first usable host IP, last usable host IP, total address count, and count of usable host addresses.
Example use cases
Network range planning for VPC
“I'm designing a VPC and want to use 172.31.0.0/20 — can you tell me the network address, broadcast address, usable host range, and total number of IPs in that block?”
Firewall rule wildcard mask lookup
“I need the wildcard mask for the subnet 192.168.50.0/27 so I can configure an ACL rule on our router.”
Verifying subnetting homework
“Can you break down 10.128.0.0/9 for me — show the netmask, broadcast address, first host, last host, and how many addresses total?”
Technical details
Endpoint
GEThttps://api.geekvault.dev/dev-tools/v1/cidr-calculate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need instant, structured IPv4 subnet calculations without standing up any infrastructure or authenticating. Ideal for network automation agents, infrastructure planning scripts, or any workflow needing programmatic CIDR expansion. Prefer this over manual calculation or local tooling when operating in a pay-per-call serverless agent context using USDC on Base.
Side effects
- Invalid CIDR format (e.g. missing prefix length or malformed IP) returns an error
- Out-of-range prefix length (e.g. /33) causes a validation error
- IPv6 CIDR inputs are not supported — only IPv4
- Missing required 'cidr' parameter returns a 400-level error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| cidrrequired | string | CIDR IPv4, ej. `192.168.1.0/24`. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| cidrrequired | string | |
| netmaskrequired | string | |
| networkrequired | string | |
| broadcastrequired | string | |
| last_hostrequired | string | |
| first_hostrequired | string | |
| usable_hostsrequired | integer | |
| wildcard_maskrequired | string | |
| total_addressesrequired | integer |
Tags
x402
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