"av.tr" is a sub-domain name for Turkish which has been opened for the use of freelance lawyers/solicitors, law offices and lawyer partnerships that are registered to "Turkish Bar Association".
".k12.tr" is a sub-domain name for Turkish primary and secondary schools that are approved by the Ministry of National Education.
".edu.tr" is a sub-domain name for Turkish higher education institutes that are recognized by "Higher Education Council (YOK)"
"bel.tr" is a sub-domain name for Turkish city and town municipality organisations.
".dr.tr" is a sub-domain name for doctors of medical science, doctor partnerships, hospitals and the first level health organisations that are registered to ttb.org.tr/drtr.
"gov.tr" is a sub-domain name for Turkish governmental organisations and institutionals.
".pol.tr" is a sub-domain name for the Turkish Police organisation.
No document requested at any stage of the registration for ".biz.tr" and ".info.tr" sub-domain names.
No document requested at any stage of the registration for ".name.tr" sub-domain names. However, if any case of a conflict, inconsistency, malicious act or an evidence of domain name trade activities is determined, the domain name owner may be requested to present supportive documents; moreover, the registration may be discontinued without prior notice or warning.
No document requested at any stage of the registration for ".gen.tr" sub-domain names.
No document requested at any stage of the registration for ".web.tr" sub-domain names.
No document requested at any stage of the registration for ".tv.tr" sub-domain names.
No document requested at any stage of the registration for ".tel.tr" sub-domainnames. However, if any case of a conflict, inconsistency,malicious act or an evidence of domain name trade activities is determined, the domain name owner may be requested to present supportive documents; moreover, the registration may be discontinued without prior notice or warning.
No document requested at any stage of the registration for ".name.tr" sub-domain names. However, if any case of a conflict, inconsistency, malicious act or an evidence of domain name trade activities is determined, the domain name owner may be requested to present supportive documents; moreover, the registration may be discontinued without prior notice or warning.

Important Notes;

A) .TR DOMAINS CAN NOT SUPPORT THE WHOIS PROTECTION
B) .TR PROHIBITED USE OF THE "REGISTERED (AD-SOURCE OR COMPANY)" INFORMATION ON EXTENDED DOMAINS IS NOT USED FOR COMMERCIAL PURPOSES. 
C) .COM.TR YOU WANT TO TRANSFER YOUR EXTENDED DOMAIN TO ANOTHER IF YOU REQUIRE A PERSONAL CIRCUMSTANCE WHICH YOU WANT TO TRANSFER IN YOUR FIRM OR TRADE REGISTRATION