Questions tagged [arin]

For questions about or involving the American Registry for Internet Numbers (ARIN), where they are the Regional Internet Registry (RIR) for Canada, the United States, and many Caribbean and North Atlantic islands.

Filter by
Sorted by
Tagged with
14
votes
2answers
9k views

What is a non-portable IPv4 address block?

For example, a Whois query for 4.4.4.0 says: ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE Does the owner simply declare the block or a subnet are not up for sale? Or does non-portable have a ...