172.212.29.0/25

Public

Class B — /25 prefix — 126 usable hosts

Network Address
172.212.29.0
Broadcast Address
172.212.29.127
Subnet Mask
255.255.255.128
Usable Hosts
126
First Usable IP
172.212.29.1
Last Usable IP
172.212.29.126
Total IPs
128
Prefix Length
/25

Network address — the base address of the block (172.212.29.0). All devices in this subnet share this prefix. Cannot be assigned to a host.

Broadcast address — packets sent to 172.212.29.127 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 172.212.29.0/25
Network Address 172.212.29.0
Broadcast Address 172.212.29.127
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 172.212.29.1
Last Usable IP 172.212.29.126
Network (Hex) 0xACD41D00
Broadcast (Hex) 0xACD41D7F
Address Type Public / Globally Routable

Binary Representation

Network Address
10101100.11010100.00011101 10101100.11010100.00011101.00000000
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 172.212.29.0/25 into 2 equal /26 subnets (62 usable hosts each).

# CIDR Network First Usable Last Usable Broadcast Hosts
1 172.212.29.0/26 172.212.29.0 172.212.29.1 172.212.29.62 172.212.29.63 62
2 172.212.29.64/26 172.212.29.64 172.212.29.65 172.212.29.126 172.212.29.127 62

IP Address Sample

Showing first 16 of 128 total IPs.

172.212.29.0 net
172.212.29.1
172.212.29.2
172.212.29.3
172.212.29.4
172.212.29.5
172.212.29.6
172.212.29.7
172.212.29.8
172.212.29.9
172.212.29.10
172.212.29.11
172.212.29.12
172.212.29.13
172.212.29.14
172.212.29.15
… 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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