Question

IANA has primarily been responsible with assigning address blocks to five regional internet registries (RIR). A tech needs to research address blocks assigned in the United States. Which RIR should the tech contact?

Answer 1

Answer :

We are responsible for global coordination of the Internet Protocol addressing systems, as well as the Autonomous System Numbers used for routing Internet traffic.

Currently there are two types of Internet Protocol (IP) addresses in active use: IP version 4 (IPv4) and IP version 6 (IPv6). IPv4 was initially deployed on 1 January 1983 and is still the most commonly used version. IPv4 addresses are 32-bit numbers often expressed as 4 octets in “dotted decimal” notation (for example, 192.0.2.53). Deployment of the IPv6 protocol began in 1999. IPv6 addresses are 128-bit numbers and are conventionally expressed using hexadecimal strings (for example, 2001:0db8:582:ae33::29).

Both IPv4 and IPv6 addresses are generally assigned in a hierarchical manner. Users are assigned IP addresses by Internet service providers (ISPs). ISPs obtain allocations of IP addresses from a local Internet registry (LIR) or National Internet Registry (NIR), or from their appropriate Regional Internet Registry (RIR):

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Answer 2

Answer

• The Internet Assigned Numbers Authority (IANA) is in charge of overseeing a collection of registries that are critical to the global coordination of the DNS root zone, IP addressing, and other Internet protocol resources.  
• Antarctica, Canada, parts of the Caribbean and the United States are all served by the American Registry for Internet Numbers (ARIN).
• East Asia, Oceania, South Asia, and Southeast Asia are served by the Asia-Pacific Network Information Centre (APNIC).
• The Internet Corporation for Assigned Names and Numbers (Icann), which regulates the assignment of IP addresses on the Internet Assigned Numbers Authority, is largely responsible for the administration of the internet, which was invented by the US government (Iana).  Icann began dominating the internet in 1998, when it was founded.

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