Address allocation kicks off IPv4 endgame

Two new allocations will force the last big address blocks to be assigned

The Internet Assigned Numbers Authority has assigned two large blocks of IPv4 addresses to the Asia-Pacific Network Information Centre, activating a rule under which the agency will give out the last of its IPv4 addresses.

The rule states that when only five large blocks of IP addresses remain, one will be handed out to each of the world's five regional Internet registries. With the latest allocation to APNIC, the number of remaining IP address blocks is down to five.

IANA is expected to assign the remaining blocks within a matter of days or less. After that, the regional bodies will have no higher source of addresses to turn to when they have assigned the addresses they hold.

IPv4's address space allows for only about 4.3 billion unique Internet addresses, which client and server computers use to connect with the Internet. The remaining IPv4 addresses have been dwindling over the past few years. The latest version of Internet Protocol, IPv6, has a nearly unlimited number of addresses but is not yet widely used.

As expected, APNIC, the regional Internet registry for Asia, has requested and been assigned two "/8" -- or "slash-8" -- address blocks, each of which contains about 16 million IP addresses. The newly assigned blocks are 39/8 and 106/8, which as recently as last week were unallocated. Now only 102/8, 103/8, 179/8 and 185/8 remain unallocated. Some other /8 blocks are reserved for special purposes such as multicasting.

Stephen Lawson covers mobile, storage and networking technologies for The IDG News Service. Follow Stephen on Twitter at @sdlawsonmedia. Stephen's e-mail address is stephen_lawson@idg.com

Join the Good Gear Guide newsletter!

Error: Please check your email address.

Tags Asia-Pacific Network Information CentreInternet Assigned Numbers Authorityinternet

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Stephen Lawson

IDG News Service
Show Comments

Essentials

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre x360

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga 910

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Kathy Cassidy

STYLISTIC Q702

First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni

STYLISTIC Q572

For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?