IPRangeExplorer

23.91.1.0/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address
23.91.1.0
Broadcast Address
23.91.1.63
Subnet Mask
255.255.255.192
Usable Hosts
62
First Usable IP
23.91.1.1
Last Usable IP
23.91.1.62
Total IPs
64
Prefix Length
/26

Network address — the base address of the block (23.91.1.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 23.91.1.63 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 62 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask — 255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 23.91.1.0/26
Network Address 23.91.1.0
Broadcast Address 23.91.1.63
Subnet Mask 255.255.255.192
Wildcard Mask 0.0.0.63
Prefix Length /26
IP Address Class Class A
Total IP Addresses 64
Usable Host Addresses 62
First Usable IP 23.91.1.1
Last Usable IP 23.91.1.62
Network (Hex) 0x175B0100
Broadcast (Hex) 0x175B013F
Address Type Public / Globally Routable

Binary Representation

Network Address
00010111.01011011.00000001 00010111.01011011.00000001.00000000
Subnet Mask
11111111.11111111.11111111.11000000

The first 26 bits (1s in the mask) identify the network. The remaining 6 bits identify hosts within the network.

Split into Equal Subnets

Split 23.91.1.0/26 into 2 equal /27 subnets (30 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 23.91.1.0/27 23.91.1.0 23.91.1.1 23.91.1.30 23.91.1.31 30
2 23.91.1.32/27 23.91.1.32 23.91.1.33 23.91.1.62 23.91.1.63 30

IP Address Sample

Showing first 16 of 64 total IPs.

23.91.1.0 net
23.91.1.1
23.91.1.2
23.91.1.3
23.91.1.4
23.91.1.5
23.91.1.6
23.91.1.7
23.91.1.8
23.91.1.9
23.91.1.10
23.91.1.11
23.91.1.12
23.91.1.13
23.91.1.14
23.91.1.15
… 48 more IPs …

/26 Subnet Reference

Total IPs 64
Usable Hosts 62
Subnet Mask 255.255.255.192
Wildcard 0.0.0.63
Full /26 reference →

Related Ranges

Parent /25 block 23.91.1.0/25 Sibling /26 block 23.91.1.64/26

Adjacent Prefix Sizes

/24 254 hosts /25 126 hosts /26 62 hosts /27 30 hosts /28 14 hosts

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