The UDRP applies to all generic top level domains (gTLDs), from .com to the newest top level domains. It applies to many country codes top level domains (ccTLDs) as well—sometimes even to third level domains in those ccTLDs. It also applies to third level domains registered in .co.com. You must have a trademark to use this policy.
The UDRP applies to all generic top level domains. The usDRP is the equivalent policy for the .us ccTLD.
The URS applies to all gTLDs that went live starting in 2013. It’s similar to the UDRP. Key differences include: you cannot get the domain name transferred to you (it gets suspended for a year), you must have a registered trademark, and the burden of proof is higher. The usRS is the equivalent policy for the .us ccTLD.
CentralNic’s CDRP is almost identical to the UDRP. It applies to third level domains registered in the second level domains operated by CentralNic. You must participate in CentralNic mediation before filing a complaint.