Fix for availability check in .ua zone

```
$ whois asdaaaaaaa.com.ua
% request from 84.253.97.124
% This is the Ukrainian Whois query server #I.
% The Whois is subject to Terms of use
% See https://hostmaster.ua/services/
%

% No entries found for asdaaaaaaa.com.ua
```
Seems like they've changed format.