SubnetPad

/22 Subnet Calculator

Results update as you type

A /22 block contains 1,024 addresses with 1,022 usable. A popular size for medium office networks and cloud VPC subnets that need room for hundreds of hosts.

/1
/32

/22 = mask 255.255.252.0 • 1,022 usable addresses

Results for 192.168.0.0/22

Private (RFC 1918)Class C
Network addressThe first address — identifies the subnet itself
Broadcast addressThe last address — used to reach every device at once
Subnet maskSame as /22 in CIDR notation
First usable hostThe first IP you can assign to a device
Last usable hostThe last IP you can assign to a device
Usable hosts1,024 total addresses in this subnet
More detailsNeighboring subnets, wildcard mask, hex, reverse DNS, and binary breakdown

Neighboring /22 subnets

Wildcard mask
Used in Cisco ACLs and OSPF
CIDR notation
IP in hexadecimal
IP as 32-bit integer
Reverse DNS (PTR)
Host bits / subnet bits

Binary breakdown

IP address11000000.10101000.00000000.00000000
Subnet mask11111111.11111111.11111100.00000000
Network11000000.10101000.00000000.00000000
Broadcast11000000.10101000.00000011.11111111

Quick facts for /22

/22 reference guideBit split, overview, sizing tables, notable networks, and FAQ

Binary bit split

Network bits (22)Host bits (10)
Network bits
22
Host bits
10
Subnet mask
255.255.252.0
Wildcard mask
0.0.3.255
Total addresses
1,024
Usable hosts
1,022
Hosts formula
2^10 − 2
/24 relationship
4 × /24 networks

Overview

A /22 block contains 1,024 addresses with 1,022 usable. A popular size for medium office networks and cloud VPC subnets that need room for hundreds of hosts.

Common use cases

  • Medium office or campus segment
  • Cloud VPC subnet for application tiers
  • Kubernetes node subnet
  • Wi-Fi dense environment (stadium, hotel)

Subnet sizing reference

Divide /22 into…

PrefixSubnetsHosts each
/232510
/244254
/258126
/261662

/22 fits inside…

SupernetHosts/22s inside
/212,0462
/204,0944
/198,1908
/1816,38216

Notable /22 networks

  • 192.168.0.0/22Common medium office block

Frequently asked questions

Common questions about /22 networks, subnet masks, and use cases.

All CIDR prefix sizes

/0/1/2/3/4/5/6/7/8/9/10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25/26/27/28/29/30/31/32