/14 subnet mask (255.252.0.0)

A /14 network has 18 host bits, 262,144 addresses and 262,142 usable hosts. It is 1,024 /24 networks.

/14 at a glance

Netmask: 255.252.0.0
Wildcard mask: 0.3.255.255
Hex mask: 0xFFFC0000
Binary mask: 11111111.11111100.00000000.00000000
Host bits: 18
Total addresses: 262,144
Usable hosts: 262,142 (minus network and broadcast)
Compared with a /24: 1,024 /24 networks

Calculate a /14 in the subnet calculator

Typical uses of a /14

A /14 (four /16s) is a common allocation for a large Kubernetes cluster pod range, or for an environment (prod, staging) inside a 10.0.0.0/8 plan.

Example /14 ranges

Network	Network address	First usable	Last usable	Broadcast	Next /14
10.0.0.0/14	10.0.0.0	10.0.0.1	10.3.255.254	10.3.255.255	10.4.0.0/14	calculate
172.16.0.0/14	172.16.0.0	172.16.0.1	172.19.255.254	172.19.255.255	172.20.0.0/14	calculate

The /14 boundary falls in the second octet, so /14 networks start every 4 in that octet (64 per /8): 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, ....

How many /14s fit

In a	Number of /14 subnets
/8	64

What a /14 contains

Smaller block	How many
/16	4
/24	1,024
/26	4,096
/28	16,384
/29	32,768
/30	65,536
/32	262,144

Splitting a /14

Into	Subnets	Usable hosts each
/15	2	131,070
/16	4	65,534
/17	8	32,766
/18	16	16,382

/14 in AWS, Azure and Google Cloud

Platform	Allowed subnet sizes	/14 allowed?	Usable after reservation
AWS VPC	/16 to /28	No	-
Azure VNet	/2 to /29	Yes	262,139 (5 reserved)
Google Cloud VPC	/4 to /29	Yes	262,140 (4 reserved)

Cloud providers reserve addresses in every subnet (first four and the last address (network, VPC router, DNS, future use, broadcast) on AWS), so the usable count there differs from the classic 2^n - 2.