IPRangeExplorer

91.154.236.0/22

Public

Class A — /22 prefix — 1,022 usable hosts

Network Address
91.154.236.0
Broadcast Address
91.154.239.255
Subnet Mask
255.255.252.0
Usable Hosts
1,022
First Usable IP
91.154.236.1
Last Usable IP
91.154.239.254
Total IPs
1,024
Prefix Length
/22

Network address — the base address of the block (91.154.236.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 91.154.239.255 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 1,022 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.252.0 is the dotted-decimal equivalent of /22. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 91.154.236.0/22
Network Address 91.154.236.0
Broadcast Address 91.154.239.255
Subnet Mask 255.255.252.0
Wildcard Mask 0.0.3.255
Prefix Length /22
IP Address Class Class A
Total IP Addresses 1,024
Usable Host Addresses 1,022
First Usable IP 91.154.236.1
Last Usable IP 91.154.239.254
Network (Hex) 0x5B9AEC00
Broadcast (Hex) 0x5B9AEFFF
Address Type Public / Globally Routable

Binary Representation

Network Address
01011011.10011010 01011011.10011010.11101100.00000000
Subnet Mask
11111111.11111111.11111100.00000000

The first 22 bits (1s in the mask) identify the network. The remaining 10 bits identify hosts within the network.

Split into Equal Subnets

Split 91.154.236.0/22 into 2 equal /23 subnets (510 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 91.154.236.0/23 91.154.236.0 91.154.236.1 91.154.237.254 91.154.237.255 510
2 91.154.238.0/23 91.154.238.0 91.154.238.1 91.154.239.254 91.154.239.255 510

/22 Subnet Reference

Total IPs 1,024
Usable Hosts 1,022
Subnet Mask 255.255.252.0
Wildcard 0.0.3.255
Full /22 reference →

Related Ranges

Parent /21 block 91.154.232.0/21 Sibling /22 block 91.154.232.0/22

Adjacent Prefix Sizes

/20 4,094 hosts /21 2,046 hosts /22 1,022 hosts /23 510 hosts /24 254 hosts

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