173.211.242.0/25

Public

Class B — /25 prefix — 126 usable hosts

Network Address
173.211.242.0
Broadcast Address
173.211.242.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
173.211.242.1
Last Usable IP
173.211.242.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (173.211.242.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 173.211.242.127 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 173.211.242.0/25
Network Address 173.211.242.0
Broadcast Address 173.211.242.127
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 173.211.242.1
Last Usable IP 173.211.242.126
Network (Hex) 0xADD3F200
Broadcast (Hex) 0xADD3F27F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101101.11010011.11110010 10101101.11010011.11110010.00000000
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 173.211.242.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 173.211.242.0/26 173.211.242.0 173.211.242.1 173.211.242.62 173.211.242.63 62
2 173.211.242.64/26 173.211.242.64 173.211.242.65 173.211.242.126 173.211.242.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

173.211.242.0 net
173.211.242.1
173.211.242.2
173.211.242.3
173.211.242.4
173.211.242.5
173.211.242.6
173.211.242.7
173.211.242.8
173.211.242.9
173.211.242.10
173.211.242.11
173.211.242.12
173.211.242.13
173.211.242.14
173.211.242.15
… 112 more IPs …

/25 Subnet Reference

Total IPs 128
Usable Hosts 126
Subnet Mask 255.255.255.128
Wildcard 0.0.0.127

Calculate Another