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IPv4 explained

# IPv4

The widely deployed 32-bit internet address family.

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## IN THIS DOCUMENT

[What it means](https://koalavps.com/glossary-ipv4/#section-1)[For hosting](https://koalavps.com/glossary-ipv4/#section-2)[What is included with the address?](https://koalavps.com/glossary-ipv4/#section-3)[Knowledge base](https://koalavps.com/resources/)

## What it means

IPv4 scarcity often affects address pricing and allocation. A public address can make a service reachable, but reachability still depends on routing, firewall and application configuration.

## For hosting

Confirm included addresses, reverse-DNS control and any extra-address terms. An IP address does not by itself establish reputation or guaranteed mail delivery.

## What is included with the address?

Check whether the address is dedicated, whether reverse DNS can be changed and what an extra address costs. Mail reputation and application reachability need their own verification.

KEEP EXPLORING

## Continue reading.

[Learn ### The words behind the infrastructure. A compact reference for reading a hosting specification and asking the next useful question.…](https://koalavps.com/glossary/)[Learn ### A field guide to your own infrastructure. Useful reading for the first deployment and the next careful improvement. Start with the decision you need to make today.…](https://koalavps.com/guides/)[Network ### A network should explain itself. Understand the Nordic region choices, the difference between a port speed and real throughput, and what evidence a hosting network…](https://koalavps.com/network/)

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