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In 2012, the IETF defined a Shared Address Space [4] for use in ISP CGN deployments and NAT devices that can handle the same addresses occurring on both inbound and outbound interfaces. ARIN returned space to the IANA as needed for this allocation and [5] "The allocated address block is 100.64.0.0 / 10 ". [4] [6]
Shared address space [4] for communications between a service provider and its subscribers when using a carrier-grade NAT 127.0.0.0/8 127.0.0.0–127.255.255.255
Internet Assigned Numbers Authority (IANA). 21 December 2017 The authoritative up-to-date list of IANA assignments. "ARIN Whois Database". American Registry for Internet Numbers (ARIN) Historical IP address lists: "INTERNET PROTOCOL ADDRESS SPACE". Internet Assigned Numbers Authority (IANA). October 2000.
The address block fc00:: / 7 is reserved by IANA for unique local addresses (ULAs). [2] ... RFC 6598 – Reserved IPv4 Prefix for Shared Address Space; RFC ...
Carrier-grade NAT. Carrier-grade NAT (CGN or CGNAT), also known as large-scale NAT (LSN), is a type of network address translation (NAT) used by ISPs in IPv4 network design. With CGNAT, end sites, in particular residential networks, are configured with private network addresses that are translated to public IPv4 addresses by middlebox network address translator devices embedded in the network ...
The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet Protocol–related symbols and Internet numbers.
The IP address space is managed globally by the Internet Assigned Numbers Authority (IANA) and the five regional Internet registries (RIRs). IANA assigns blocks of IP addresses to the RIRs, which are responsible for distributing them to local Internet registries in their region such as internet service providers (ISPs) and large institutions.
The long-term solution to address exhaustion was the 1998 specification of a new version of the Internet Protocol, IPv6. [29] It provides a vastly increased address space, but also allows improved route aggregation across the Internet, and offers large subnetwork allocations of a minimum of 2 64 host addresses to end users. However, IPv4 is not ...