Understanding IP Addresses

by Barry Dysert
(last updated March 15, 2021)

1

An IP (Internet Protocol) address is required for every device connected to an IP-governed network. IP addresses are part of the "conversation" that occurs between clients and servers over DHCP. (See the tip titled Understanding DHCP for more information.)

There are two types of IP addresses: IPv4, which uses 32-bit numbers to store the address, and IPv6, which uses 128-bit numbers to store the address. IPv6 was established because it was predicted in the 1990's that all 32-bit addresses would soon be spoken for.

An IPv4 address is a sequence of four groups of numbers separated by periods (called the dot-decimal notation). For example, the "google.com" domain uses (among others) an IPv4 address of 74.125.225.114. Behind each of the four groups of an IPv4 address is an eight-bit number, so each group can range from 0 to 255. This implies that a little over four billion unique addresses (256 x 256 x 256 x 256) can be represented by an IPv4 address. Because of the IPv4 specification and reserved addresses, though, not all potential addresses are actually available.

An IPv6 address is a sequence of eight groups of numbers separated by colons. Behind each of the eight groups is a 16-bit number, so each group can range from 0 to FFFF (hex). Hex numbers can appear as part of an IPv6 address, so a theoretical IPv6 address may look something like this: 2002:0715:44D5:C4AE:2910:0AE7:D29F:948D.

 This tip (13104) applies to Windows 7, 8, and 10.

Author Bio

Barry Dysert

Barry has been a computer professional for over 35 years, working in different positions such as technical team leader, project manager, and software developer. He is currently a software engineer with an emphasis on developing custom applications under Microsoft Windows. When not working with Windows or writing Tips, Barry is an amateur writer. His first non-fiction book is titled "A Chronological Commentary of Revelation." ...

MORE FROM BARRY

Deleting a Saved Search

Windows Explorer has a good search utility built into it. As you use it, you may wish to delete a previously saved search ...

Discover More

Scheduling a Program to Run on a Schedule

If you have certain programs that you want to have run automatically, you can use Windows Task Scheduler to quickly set ...

Discover More

ConFavor

Navigating to favorite files or folders need not be a time waster of click through a tree structure. ConFavor makes this ...

Discover More
More WindowsTips

Microsoft Edge Extensions

Like all good browsers, Microsoft Edge supports extensions. Although getting and using them may be a little rough around ...

Discover More

Scanning Your System for Open Ports

For security reasons, you may want to scan your system for open ports. This tip explains a bit about ports and how to see ...

Discover More

Saving System Resources with Sleeping Tabs

When more system resources are used by your web browser, your computer will slow down. Turn on sleeping tabs to help free ...

Discover More
Subscribe

FREE SERVICE: Get tips like this every week in WindowsTips, a free productivity newsletter. Enter your address and click "Subscribe."

View most recent newsletter.

Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] (all 7 characters, in the sequence shown) in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is 3 - 1?

2021-03-15 11:08:17

bonzadog

Hello,
IP addresses - what information do they contain. Such a which country??


Newest Tips
Subscribe

FREE SERVICE: Get tips like this every week in WindowsTips, a free productivity newsletter. Enter your address and click "Subscribe."

(Your e-mail address is not shared with anyone, ever.)

View the most recent newsletter.