This script will take an input list of domains and retrieve WHOIS information for them using the Registration Data Access Protocol (RDAP). Depending on the TLD the domain is under will determine which RDAP server the request is made on. We are using the Bootstrap Service Registry for Domain Name Space from IANA.
From my experience, it seems every RDAP server has their employed rate limits. While I am still benchmarking and testing these limits, proxy support has been added to circumvent this issue.
| Argument | Description | Default Value |
|---|---|---|
-i, --input_file |
File containing list of domains (one per line). | |
-p, --proxy |
Proxy in user:pass@host:port format. If not supplied, none is used. |
|
-c, --concurrency |
Number of concurrent requests to make. | 25 |
-o, --output |
Output file to write successful RDAP data to. | output.json |
-f, --failed |
Output file to write failed domains to. (optional) | failed.txt |
By comparing the root TLDS and the RDAP Bootstrap data from IANA, along with querying IANA's WHOIS server to find other TLD's WHOIS servers, we can formulate coverage statistics on WHOIS/RDAP availability across all available TLDS:
| Status | Results |
|---|---|
| RDAP | 1,174 (81%) |
| No RDAP | 275 (19%) |
| Status | Results |
|---|---|
| WHOIS | 1,253 (86%) |
| No WHOIS | 196 (14%) |
- Explore other RDAP servers from RIRs, registrars, IANA (see here)
- Mass domain availability lookups
- Find available 1 or 2 letter domains.
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