Cisco CCNA Certifications Exam 640-802

The main body involved in the distribution of IP numbers is IANA. IANA allocates blocks of IP address space to the 350-001 Regional Internet Registries (RIRs)23 , which allocate IP addresses and numbers to ISPs and large organizations. Currently, the issue of how numbers will be allocated under IPv6 has become a matter of some contention. In particular, it appears possible that national governments, which have not shown much interest in IP allocation thus far, may henceforth play a greater role. Unless this is done 350-030 with great care, the basic need to constrain the growth of routing tables could be seriously affected.
Although the IANA distributes IP space, it was the IETF, in consultation with industry and technical groups that played the leading role in developing IPv6. As noted, the IETF has also been at the forefront of ENUM development. However, given the bridging role played by ENUM between the Internet and existing telephone systems, organizations more traditionally involved in telecommunications governance have also claimed a role. In particular, as the international authority for telephone codes, the ITU has been involved in the application of ENUM; the IETF design specified a key role for the ITU in validating the topmost levels of delegation for ENUM domain names. 640-802 In addition, as PSTN numbering still remain largely the domain of national regulators, it seems likely that any widespread deployment of ENUM will by necessity involve governments too.