RDAP Inspector
Registration Data Access Protocol — Modern replacement for WHOIS. Query domain and IP registration data with privacy protection and standardized responses.
Look up a domain, IP address, or ASN
Enter a domain name, IP address, or ASN to view RDAP registration data
RDAP guide
Registration Data Access Protocol (RDAP) is the modern replacement for WHOIS, developed by the IETF. It provides:
Privacy Protection
Standardized redaction of personal information
Internationalization
Supports UTF-8 and non-ASCII characters
JSON Format
Machine-readable responses for automation
RESTful API
Standardized endpoints and HTTP methods
| Feature | RDAP | WHOIS |
|---|---|---|
| Format | JSON | Plain text (inconsistent) |
| Privacy | ✅ Standardized redaction | ❌ Varies by registrar |
| Internationalization | ✅ UTF-8 support | ❌ ASCII only |
| Protocol | RESTful API (HTTPS) | Port 43 (TCP) |
| Data Types | Domains, IPs, ASNs, Entities | Primarily domains |
🏷️ handle
Unique identifier for the object
🏢 entities
Registrar, registrant, admin, tech contacts
📅 events
Registration, expiration, last changed dates
🔗 links
Related resources and self links
✅ status
Object status (active, inactive, etc.)
🆔 publicIds
IANA registry identifiers