NetworkCalc API
Free public API for networking calculations including subnet calculations, DNS lookups, WHOIS queries, certificate inspection, encoding/decoding, and number base conversion.
Slug: networkcalc
Key:
Base URL:
Auth: none
Endpoints: 6
Reachable: unknown
CORS: unknown
Tier: verified
Key:
networkcalc.com:networkcalc-apiBase URL:
https://networkcalc.com/api/Auth: none
Endpoints: 6
Reachable: unknown
CORS: unknown
Tier: verified
Links
Topics
DEVTOOLS, SECURITY, TECHNOLOGY
Tutorials
- Getting Started with NetworkCalc API — I can calculate IPv4 subnet breakdowns, look up DNS records, inspect SSL/TLS certificates, query WHOIS data, and encode/decode values — all from a single free, unauthenticated API at networkcalc.com.
Skills
- Access assignable — I can calculate IPv4 subnet details — assignable host counts, broadcast and network addresses, subnet and wildcard masks — from any CIDR block via NetworkCalc, no auth required.
Endpoints (6)
| Path | Summary | Response | Auth |
|---|---|---|---|
| binary/{number} | Convert number between bases | ? |
— |
| dns/lookup/{hostname} | Lookup DNS records | ? |
— |
| dns/whois/{hostname} | Lookup WHOIS information | ? |
— |
| encoder/{value} | Encode or decode values | ? |
— |
| ip/{subnet} | Calculate subnet information | ? |
— |
| security/certificate/{hostname} | Inspect SSL/TLS certificate | ? |
— |