IP addresses under the IPv4, or version 4 internet protocol, use 12 digits. This allows for 4.3 billion addresses, of which 3.7 billion are usable.
Although that seems like a very big number, the reality is that because IP addresses are crucial for everyone’s internet communication across the globe, we are running out of IPv4 addresses to use. Millions can be used up in a month alone.
As a result, newer Internet Service Providers are forced to be more discretionary in offering customers a IPv4 addresses. This is why MyRepublic uses private dynamic IP, with a Network Address Translation (NAT) service allowing customers to share a IPv4 address.
The next-to-be adopted internet standard of IPv6 comes with 39 digits, allowing for an almost unlimited number of addresses. Unfortunately, for IPv6 to be deployed successfully, all content and servers on the internet would need to support IPv6, which will take a few years.
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