169.254.0.0/16 (APIPA)
169.254.0.0/16 is the APIPA range — a device self-assigns one of these addresses when it cannot reach a DHCP server.
What it is used for
Seeing a 169.254 address almost always means DHCP failed. Fix DHCP or the network link.
Where you will see it
Understanding reserved addresses like this is core CCNA knowledge — they appear constantly in routing tables, DHCP and troubleshooting.
Frequently asked questions
What is 169.254.0.0/16?
169.254.0.0/16 is the APIPA range — a device self-assigns one of these addresses when it cannot reach a DHCP server.
Is 169.254.0.0/16 routable on the internet?
No — it is a reserved special-purpose address and is not routed on the public internet.
Where is it used?
Seeing a 169.254 address almost always means DHCP failed. Fix DHCP or the network link.
Related
Learn networking hands-on
Master IP addressing, subnetting and Cisco configuration on real lab devices with placement support at Attila Technologies, Ahmedabad.