Final answer:
The 4 out of 5 RIRs no longer have enough IPv4 addresses to allocate to customers on a regular basis. Therefore the statement is True.
Step-by-step explanation:
The statement True or False: 4 out of 5 RIRs no longer have enough IPv4 addresses to allocate to customers on a regular basis is True.
RIRs, or Regional Internet Registries, are organizations that distribute IP addresses and manage the registration of IP resources within their respective regions. There are currently five RIRs, which are responsible for allocating and managing IPv4 and IPv6 addresses globally.
Due to the rapid growth of internet usage and the limited supply of IPv4 addresses, it is true that 4 out of 5 RIRs, specifically the Asia-Pacific Network Information Centre (APNIC), the Latin American and Caribbean Internet Addresses Registry (LACNIC), the Réseaux IP Européens Network Coordination Centre (RIPE NCC), and the American Registry for Internet Numbers (ARIN), have exhausted their supply of IPv4 addresses.
These RIRs now have limited or no IPv4 address blocks available for regular allocation to customers.