Registry/Registrar WHOIS and WHOIS/HTTP Modes

Registry/Registrar WHOIS and WHOIS-HTTP Modes

Hints & Tricks:
»Tuning for best performance

Lookup Registry WHOIS

Registry WHOIS provides basic information about domain name such as its creation time, status, name servers. If you want to check domain availability using WHOIS, select this setting and clear Also Lookup Registrar WHOIS setting.

Also Lookup Registrar WHOIS

Registrar WHOIS (also called Referral WHOIS) provides as much information about domain name as possible. Usually this information includes Expiration Date, Registrant (Owner) information, Technical Contacts and so on.

WHOIS and HTTP Modes

WHOIS mode uses WHOIS servers to retrieve domain information while HTTP mode uses HTTP server if it's possible. If a request to server fails, the program can use another mode when it's allowed.
Recommended value: both WHOIS and HTTP Modes selected.

Hints & Tricks:

Tuning for best performance

WHOIS lookups are useful for brief but not too accurate domain list availability check (use Registry only) and for retrieving Expiration Dates (also select Registrar WHOIS). To scan soon-to-expire domain list, use Real-Time Availability check.
See other settings for more performance tips.