31.187.17.0/26

Public

Class A — /26 prefix — 62 usable hosts

Network Address
31.187.17.0
Broadcast Address
31.187.17.63
Subnet Mask
255.255.255.192
Usable Hosts
62
First Usable IP
31.187.17.1
Last Usable IP
31.187.17.62
Total IPs
64
Prefix Length
/26

Network address — the base address of the block (31.187.17.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 31.187.17.63 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 mask255.255.255.192 is the dotted-decimal equivalent of /26. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 31.187.17.0/26
Network Address 31.187.17.0
Broadcast Address 31.187.17.63
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 31.187.17.1
Last Usable IP 31.187.17.62
Network (Hex) 0x1FBB1100
Broadcast (Hex) 0x1FBB113F
Address Type Public / Globally Routable

Binary Representation

Network Address
00011111.10111011.00010001 00011111.10111011.00010001.00000000
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 31.187.17.0/26 into 2 equal /27 subnets (30 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 31.187.17.0/27 31.187.17.0 31.187.17.1 31.187.17.30 31.187.17.31 30
2 31.187.17.32/27 31.187.17.32 31.187.17.33 31.187.17.62 31.187.17.63 30

IP Address Sample

Showing first 16 of 64 total IPs.

31.187.17.0 net
31.187.17.1
31.187.17.2
31.187.17.3
31.187.17.4
31.187.17.5
31.187.17.6
31.187.17.7
31.187.17.8
31.187.17.9
31.187.17.10
31.187.17.11
31.187.17.12
31.187.17.13
31.187.17.14
31.187.17.15
… 48 more IPs …

/26 Subnet Reference

Total IPs 64
Usable Hosts 62
Subnet Mask 255.255.255.192
Wildcard 0.0.0.63

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