What Is an IP Address? Think of a Street Address

When someone asks what an IP address is, think of a street address. A delivery needs a destination. Information traveling across a network needs one too.

Think of sending a package

You would not tell a delivery driver, “Take this to the blue house somewhere.” You would give an address. When your computer requests a web page, network equipment uses IP addresses to help send information to the right destination and return the reply.

The comparison is useful, but an IP address is a network address. It is not your actual street address.

Your home is like an apartment building

Many home networks work like a building with one outside address and different apartment numbers inside.

• Public IP address: The address used for your internet connection on the outside.
• Private, or local, IP address: An address used by a device inside your home network.

Your laptop, phone, and printer can each have a different local address. Your router helps their traffic reach the internet. A local address might look like 192.168.1.25. That is an example, not a setting you need to enter.

This describes a common home setup. Some providers share a public address among several customers, and newer networks can give devices their own public addresses.

Why do we type website names instead of numbers?

Remembering a name is easier than remembering an address. DNS works like an address book: it helps your browser find the IP address associated with a website name. A name can lead to more than one address.

Can an IP address change?

Yes. Many addresses are assigned automatically and can change. Moving from home Wi-Fi to mobile data also changes the connection you use. An IP address is not a permanent name tag for a person.

Why would I need to know one?

A printer problem is a good example. Your computer needs to reach the printer on your network. If the printer’s local address changes, an old saved connection may stop finding it.

Usually your devices handle addresses automatically. Start with our offline printer guide or Wi-Fi connected but no internet guide before changing network settings.

What should you remember?

IP address = a destination for network information. Public and local addresses describe different parts of the journey. Website names help you avoid memorizing the numbers.

Further reading: Cloudflare’s IP address explanation and how DNS works.

Keep learning: What Is a Web Browser? · More beginner guides