SubnetPad

/26 Subnet Calculator

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A /26 block contains 64 addresses with 62 usable. It is one quarter of a /24 and is used for department-level subnets, cloud micro-segments, and guest network isolation.

/1
/32

/26 = mask 255.255.255.192 • 62 usable addresses

Results for 192.168.1.0/26

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 /26 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 hosts64 total addresses in this subnet
More detailsNeighboring subnets, wildcard mask, hex, reverse DNS, and binary breakdown

Neighboring /26 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 address11000000.10101000.00000001.00000000
Subnet mask11111111.11111111.11111111.11000000
Network11000000.10101000.00000001.00000000
Broadcast11000000.10101000.00000001.00111111

Quick facts for /26

/26 reference guideBit split, overview, sizing tables, notable networks, and FAQ

Binary bit split

Network bits (26)Host bits (6)
Network bits
26
Host bits
6
Subnet mask
255.255.255.192
Wildcard mask
0.0.0.63
Total addresses
64
Usable hosts
62
Hosts formula
2^6 − 2
/24 relationship
4 fit per /24

Overview

A /26 block contains 64 addresses with 62 usable. It is one quarter of a /24 and is used for department-level subnets, cloud micro-segments, and guest network isolation.

Common use cases

  • Department or team subnet within a /24
  • Cloud security-group micro-segment
  • Guest Wi-Fi isolation
  • Small server cluster network

Subnet sizing reference

Divide /26 into…

PrefixSubnetsHosts each
/27230
/28414
/2986
/30162

/26 fits inside…

SupernetHosts/26s inside
/251262
/242544
/235108
/221,02216

Notable /26 networks

  • 192.168.1.0/26.0–.63 quarter
  • 192.168.1.64/26.64–.127 quarter
  • 192.168.1.128/26.128–.191 quarter
  • 192.168.1.192/26.192–.255 quarter

Frequently asked questions

Common questions about /26 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