🧮 IP Calculator
Subnet calculation, ranges, masks and CIDR notation
Subnet Mask Selector
Network
| CIDR Notation | 172.0.0.0/25 |
| Network Address | 172.0.0.0 |
| Broadcast Address | 172.0.0.127 |
| First Host | 172.0.0.1 |
| Last Host | 172.0.0.126 |
Mask & Stats
| Subnet Mask | 255.255.255.128 |
| Wildcard Mask | 0.0.0.127 |
| Total Hosts | 128 |
| Usable Hosts | 126 |
| IP Class | Class B |
| Address Type | Public |
Binary Representation
IP IP in Binary
10101100.00000000.00000000.00000000
█ network bits
█ host bits
Mask in Binary
11111111.11111111.11111111.10000000
Subnet Splitter
| # | Subnet (/29) | Range | Broadcast Address | Usable Hosts |
|---|---|---|---|---|
| 1 | 172.0.0.0/29 | 172.0.0.1 — 172.0.0.6 | 172.0.0.7 | 6 |
| 2 | 172.0.0.8/29 | 172.0.0.9 — 172.0.0.14 | 172.0.0.15 | 6 |
| 3 | 172.0.0.16/29 | 172.0.0.17 — 172.0.0.22 | 172.0.0.23 | 6 |
| 4 | 172.0.0.24/29 | 172.0.0.25 — 172.0.0.30 | 172.0.0.31 | 6 |
| 5 | 172.0.0.32/29 | 172.0.0.33 — 172.0.0.38 | 172.0.0.39 | 6 |
| 6 | 172.0.0.40/29 | 172.0.0.41 — 172.0.0.46 | 172.0.0.47 | 6 |
| 7 | 172.0.0.48/29 | 172.0.0.49 — 172.0.0.54 | 172.0.0.55 | 6 |
| 8 | 172.0.0.56/29 | 172.0.0.57 — 172.0.0.62 | 172.0.0.63 | 6 |
| 9 | 172.0.0.64/29 | 172.0.0.65 — 172.0.0.70 | 172.0.0.71 | 6 |
| 10 | 172.0.0.72/29 | 172.0.0.73 — 172.0.0.78 | 172.0.0.79 | 6 |
| 11 | 172.0.0.80/29 | 172.0.0.81 — 172.0.0.86 | 172.0.0.87 | 6 |
| 12 | 172.0.0.88/29 | 172.0.0.89 — 172.0.0.94 | 172.0.0.95 | 6 |
| 13 | 172.0.0.96/29 | 172.0.0.97 — 172.0.0.102 | 172.0.0.103 | 6 |
| 14 | 172.0.0.104/29 | 172.0.0.105 — 172.0.0.110 | 172.0.0.111 | 6 |
| 15 | 172.0.0.112/29 | 172.0.0.113 — 172.0.0.118 | 172.0.0.119 | 6 |
| 16 | 172.0.0.120/29 | 172.0.0.121 — 172.0.0.126 | 172.0.0.127 | 6 |
Converter
IP → Integer
2885681152
Mask → CIDR
/ 25
Range (hex)
0xAC000000 — 0xAC00007F
Quick Converter (no reload)
IP → Integer
Integer → IP
📊 Subnet Visualization
172.0.0.0
172.0.0.127
Network
▲ 172.0.0.0
Broadcast
Usable hosts: 126
Reserved: 2
your_ip
📋 Subnet Cheat Sheet
| CIDR | Mask | Hosts | Usage |
|---|---|---|---|
| /8 | 255.0.0.0 | 16,777,214 | Large Class A networks |
| /16 | 255.255.0.0 | 65,534 | Medium corporate networks |
| /24 | 255.255.255.0 | 254 | Typical home/office network |
| /25 | 255.255.255.128 | 126 | Half of /24 |
| /26 | 255.255.255.192 | 62 | Small department |
| /27 | 255.255.255.224 | 30 | Small office |
| /28 | 255.255.255.240 | 14 | Micro-segment |
| /29 | 255.255.255.248 | 6 | Point-to-point with hosts |
| /30 | 255.255.255.252 | 2 | Point-to-point link |
| /31 | 255.255.255.254 | 2 | P2P (RFC 3021) |
| /32 | 255.255.255.255 | 1 | Single host route |