IPv4 Archives | APNIC Blog

Prefixes are fundamental to routing. How do they work?

Guest Post: Searching for the perfect data structure to store and retrieve a full table of IP prefixes, while maintaining the hierarchical relations.

By Geoff Huston on 27 Apr 2021

How significant is the advertising of US Department of Defense IPv4 address space?

By Danny Pinto on 3 Mar 2021

Guest post: In 2014, there were problems when the IPv4 Internet routing table hit 512k routes. What will happen when it hits 1024k?

By Geoff Huston on 15 Jan 2021

Geoff Huston reports on IPv4 and IPv6 addressing in 2020 and makes some predictions for the future.

By Geoff Huston on 6 Jan 2021

Part two of Geoff Huston’s 2020 BGP report investigates whether the stability of the routing system is changing.

By Geoff Huston on 5 Jan 2021

Geoff Huston analyses recent and historical BGP routing table growth and forecasts IPv4 and IPv6 BGP routing table growth for the next five years.

By Timothy Winters on 11 Aug 2020

Guest Post: Knowing the potential roadblocks associated with IPv6 transition mechanisms helps network operators avoid them.

By Guangliang Pan on 23 Jul 2020

APNIC can now begin processing IPv4 transfers between the APNIC and LACNIC regions.

By Sanjaya on 15 Jul 2020

On the third week of May 2020, APNIC welcomed its 8,000th direct Member.