You're find the problem is with the whois checker your using, no all online whois checkers work with all domain types so its a matter of finding one that does.
I can confirm that both GoDaddy's Whois Checker and Verisign's Checker works with the
.name domain types.
It's worth mentioning that a lot of sites use 'linux' whois command to query the domain for this information - it seems that .name is not supported using whois within linux as this results display similar to your problem:
Bybe@Megatron:~# whois webspell.name
Domain Name ID: 2889641DOMAIN-NAME
Domain Name: WEBSPELL.NAME
Domain Status: clientDeleteProhibited
Domain Status: clientRenewProhibited
Domain Status: clientTransferProhibited
Domain Status: clientUpdateProhibited
So again only certain whois checkers will work with the .name extension.