| A | ↛ | AbstractLocator removed | |
| A | ↛ | DomainLocator removed |
| ⇢ | B | Client::validateLookupArgs() added | |
| ⇢ | A | Client::parseWhoisInput() added | |
| ⇢ | A | AbstractWhoisClient::writeRequest() added | |
| A | ↛ | Client::parseWhoisDomain() removed | |
| A | ↛ | DomainLocator::findWhoisServer() removed | |
| A | ↛ | DomainLocator::getWhoisServer() removed | |
| A | ↛ | AbstractLocator::getLastMatch() removed | |
| A | ↛ | Client::getSearchableHostname() removed | |
| A | ↛ | Client::makeSafeWhoisRequest() removed | |
| A | ↛ | AbstractLocator::__construct() removed | |
| A | ↛ | AbstractWhoisClient::makeWhoisRequest() removed |