United States IPv4 Overview
Key facts about IPv4 address allocation and usage in United States.
ARIN — Regional Internet Registry
ARIN is the Regional Internet Registry responsible for managing IP address allocation in the region that includes United States. All IPv4 transfers involving United States-based organizations must be processed through ARIN.
IPv4 Market in United States
The demand for IPv4 addresses in United States continues to grow as organizations expand their network infrastructure. With the global IPv4 pool fully exhausted, businesses in United States must acquire addresses through the secondary market — either by purchasing or leasing from existing holders.
IPv4Center facilitates IPv4 transactions for organizations in United States through the ARIN transfer process. Whether you need a /24 block (256 addresses) or a larger allocation, our marketplace connects buyers and sellers across the ARIN region with competitive pricing and managed transfers.
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Frequently Asked Questions
How do I buy IPv4 addresses in United States?
How do I buy IPv4 addresses in United States?
To buy IPv4 addresses in United States, you can browse listings on the IPv4Center marketplace filtered by the ARIN region. The transfer will be processed through ARIN and typically takes 2-4 weeks to complete.
Which RIR manages IP addresses in United States?
Which RIR manages IP addresses in United States?
IP addresses in United States are managed by ARIN. All transfers and allocations for United States-based organizations go through ARIN.
How many IPv4 addresses are allocated to United States?
How many IPv4 addresses are allocated to United States?
United States has approximately ~1.6 billion IPv4 addresses allocated through ARIN. These are distributed among ISPs, enterprises, government agencies, and other organizations.
Can I lease IPv4 addresses in United States?
Can I lease IPv4 addresses in United States?
Yes, IPv4 leasing is available for organizations in United States. Leasing provides immediate access to IPv4 addresses without the upfront cost of purchasing, with automated ROA, RPKI, and route object configuration.