| name | domain-whois |
| description | Check domain name availability across 12 TLDs via direct WHOIS/RDAP lookups. No external service needed. Use when the user asks about domain availability, wants to find a domain name, or mentions registering a domain. |
| compatibility | Requires bash, whois CLI (built into macOS, install via apt on Linux), and curl. |
| metadata | {"author":"stevederico","version":"1.0"} |
Domain WHOIS Checker
Check domain availability across 12 TLDs via direct WHOIS and RDAP lookups. No API dependency.
When to use
- User asks "is example.com available?"
- User wants to find available domain names
- User is brainstorming project names and wants to check domains
How to check
Run the bundled script:
scripts/check.sh <domain>
Pass the base name only (no TLD). The script checks all 12 TLDs in parallel:
.com, .net, .org, .io, .dev, .app, .co, .xyz, .ai, .shop, .site, .tech
Output format
Pipe-delimited, sorted available first:
example.dev|Available
example.app|Available
example.com|Taken
example.shop|Unknown
Presenting results
Format as a table:
| Domain | Status |
|---|
| example.dev | Available |
| example.app | Available |
| example.com | Taken |
Checking multiple names
Run the script once per name. Can run in parallel:
scripts/check.sh name1 &
scripts/check.sh name2 &
wait
How it works
- 10 TLDs checked via
whois -h <server> (port 43 TCP)
.dev and .app checked via RDAP (HTTP to Google registry)- All 12 lookups run in parallel
- Results parsed for known available/taken patterns
