Yes, there are. Each registry defines registration terms and conditions specific to each top-level domain. These have to comply with ICANN guidelines and may include other provisions. The contact details of an OwnerC, AdminC and TechC are frequently of importance and documents to provide proof may be required. For certain TLDs, registrants may be required to provide proof of residency, commercial registration or may have to prove a specific area of application of the domain.
Information on individual TLDs can be found here. Our domain experts are familiar with the technical and legal registration requirements of TLDs in our portfolio, down to the very last detail. If you have any specific questions, please do not hesitate to contact us.