188.159.90.0/25

Public

Class B — /25 prefix — 126 usable hosts

Network Address
188.159.90.0
Broadcast Address
188.159.90.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
188.159.90.1
Last Usable IP
188.159.90.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (188.159.90.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 188.159.90.127 are delivered to every device in the subnet. Also reserved — not assignable.

Usable hosts — the 126 addresses between those two that you can assign to servers, VMs, or interfaces.

Subnet mask255.255.255.128 is the dotted-decimal equivalent of /25. Older tools and Cisco configs use this format instead of CIDR slash notation.

Full Details

CIDR Notation 188.159.90.0/25
Network Address 188.159.90.0
Broadcast Address 188.159.90.127
Subnet Mask 255.255.255.128
Wildcard Mask 0.0.0.127
Prefix Length /25
IP Address Class Class B
Total IP Addresses 128
Usable Host Addresses 126
First Usable IP 188.159.90.1
Last Usable IP 188.159.90.126
Network (Hex) 0xBC9F5A00
Broadcast (Hex) 0xBC9F5A7F
Address Type Public / Globally Routable

Binary Representation

Network Address
10111100.10011111.01011010 10111100.10011111.01011010.00000000
Subnet Mask
11111111.11111111.11111111.10000000

The first 25 bits (1s in the mask) identify the network. The remaining 7 bits identify hosts within the network.

Split into Equal Subnets

Split 188.159.90.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 188.159.90.0/26 188.159.90.0 188.159.90.1 188.159.90.62 188.159.90.63 62
2 188.159.90.64/26 188.159.90.64 188.159.90.65 188.159.90.126 188.159.90.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

188.159.90.0 net
188.159.90.1
188.159.90.2
188.159.90.3
188.159.90.4
188.159.90.5
188.159.90.6
188.159.90.7
188.159.90.8
188.159.90.9
188.159.90.10
188.159.90.11
188.159.90.12
188.159.90.13
188.159.90.14
188.159.90.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

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