2 approximately how many ipv4 addresses are possible

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2. Approximately how many IPv4 addresses are possible? IPv4 provides approximately 4.3 billion addresses;
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3. Approximately how many IPv6 addresses are possible? IPv6 uses a 128-bit address, allowing 2 128 , or approximately 3.4×10 38 addresses, 4. Why do you think the world is running out of IPv4 addresses? IPv4 address exhaustion is the depletion of the pool of unallocated Internet Protocol Version 4 (IPv4) addresses, which has been anticipated since the late 1980s. This depletion is the reason for the development and deployment of its successor protocol, IPv6. Organizations that obtained IP addresses in the 1980s were often allocated far more addresses than they actually required, because the initial classful network allocation method was inadequate to reflect reasonable usage 5. How long do you think it will take before the IPv4 addresses are completely exhausted? The IP address space is managed by the Internet Assigned Numbers Authority (IANA) globally, and by five regional Internet registries (RIR) responsible in their designated territories for assignment to end users and local Internet registries, such as Internet service providers. The top-level exhaustion occurred on 31 January 2011, and the RIR APNIC's exhaustion on 15 April 2011 and some parts of the world have already exhausted their IPv4 allocations, and the remaining RIRs are expected to deplete their pools within a few years 6. Since IPv6 is the long-term solution for this issue, why do you think we are still using and assigning IPv4 addresses on the Internet? “While businesses are making great progress moving
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  • Summer '14
  • IP address, IP addresses, Internet Assigned Numbers Authority, Internet Assigned Numbers

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