🧮 IP Calculator
Subnet calculation, ranges, masks and CIDR notation
Subnet Mask Selector
Network
| CIDR Notation | 172.16.0.0/20 |
| Network Address | 172.16.0.0 |
| Broadcast Address | 172.16.15.255 |
| First Host | 172.16.0.1 |
| Last Host | 172.16.15.254 |
Mask & Stats
| Subnet Mask | 255.255.240.0 |
| Wildcard Mask | 0.0.15.255 |
| Total Hosts | 4,096 |
| Usable Hosts | 4,094 |
| IP Class | Class B |
| Address Type | Private |
Binary Representation
IP IP in Binary
10101100.00010000.00000000.00000000
█ network bits
█ host bits
Mask in Binary
11111111.11111111.11110000.00000000
Subnet Splitter
| # | Subnet (/25) | Range | Broadcast Address | Usable Hosts |
|---|---|---|---|---|
| 1 | 172.16.0.0/25 | 172.16.0.1 — 172.16.0.126 | 172.16.0.127 | 126 |
| 2 | 172.16.0.128/25 | 172.16.0.129 — 172.16.0.254 | 172.16.0.255 | 126 |
| 3 | 172.16.1.0/25 | 172.16.1.1 — 172.16.1.126 | 172.16.1.127 | 126 |
| 4 | 172.16.1.128/25 | 172.16.1.129 — 172.16.1.254 | 172.16.1.255 | 126 |
| 5 | 172.16.2.0/25 | 172.16.2.1 — 172.16.2.126 | 172.16.2.127 | 126 |
| 6 | 172.16.2.128/25 | 172.16.2.129 — 172.16.2.254 | 172.16.2.255 | 126 |
| 7 | 172.16.3.0/25 | 172.16.3.1 — 172.16.3.126 | 172.16.3.127 | 126 |
| 8 | 172.16.3.128/25 | 172.16.3.129 — 172.16.3.254 | 172.16.3.255 | 126 |
| 9 | 172.16.4.0/25 | 172.16.4.1 — 172.16.4.126 | 172.16.4.127 | 126 |
| 10 | 172.16.4.128/25 | 172.16.4.129 — 172.16.4.254 | 172.16.4.255 | 126 |
| 11 | 172.16.5.0/25 | 172.16.5.1 — 172.16.5.126 | 172.16.5.127 | 126 |
| 12 | 172.16.5.128/25 | 172.16.5.129 — 172.16.5.254 | 172.16.5.255 | 126 |
| 13 | 172.16.6.0/25 | 172.16.6.1 — 172.16.6.126 | 172.16.6.127 | 126 |
| 14 | 172.16.6.128/25 | 172.16.6.129 — 172.16.6.254 | 172.16.6.255 | 126 |
| 15 | 172.16.7.0/25 | 172.16.7.1 — 172.16.7.126 | 172.16.7.127 | 126 |
| 16 | 172.16.7.128/25 | 172.16.7.129 — 172.16.7.254 | 172.16.7.255 | 126 |
| 17 | 172.16.8.0/25 | 172.16.8.1 — 172.16.8.126 | 172.16.8.127 | 126 |
| 18 | 172.16.8.128/25 | 172.16.8.129 — 172.16.8.254 | 172.16.8.255 | 126 |
| 19 | 172.16.9.0/25 | 172.16.9.1 — 172.16.9.126 | 172.16.9.127 | 126 |
| 20 | 172.16.9.128/25 | 172.16.9.129 — 172.16.9.254 | 172.16.9.255 | 126 |
| 21 | 172.16.10.0/25 | 172.16.10.1 — 172.16.10.126 | 172.16.10.127 | 126 |
| 22 | 172.16.10.128/25 | 172.16.10.129 — 172.16.10.254 | 172.16.10.255 | 126 |
| 23 | 172.16.11.0/25 | 172.16.11.1 — 172.16.11.126 | 172.16.11.127 | 126 |
| 24 | 172.16.11.128/25 | 172.16.11.129 — 172.16.11.254 | 172.16.11.255 | 126 |
| 25 | 172.16.12.0/25 | 172.16.12.1 — 172.16.12.126 | 172.16.12.127 | 126 |
| 26 | 172.16.12.128/25 | 172.16.12.129 — 172.16.12.254 | 172.16.12.255 | 126 |
| 27 | 172.16.13.0/25 | 172.16.13.1 — 172.16.13.126 | 172.16.13.127 | 126 |
| 28 | 172.16.13.128/25 | 172.16.13.129 — 172.16.13.254 | 172.16.13.255 | 126 |
| 29 | 172.16.14.0/25 | 172.16.14.1 — 172.16.14.126 | 172.16.14.127 | 126 |
| 30 | 172.16.14.128/25 | 172.16.14.129 — 172.16.14.254 | 172.16.14.255 | 126 |
| 31 | 172.16.15.0/25 | 172.16.15.1 — 172.16.15.126 | 172.16.15.127 | 126 |
| 32 | 172.16.15.128/25 | 172.16.15.129 — 172.16.15.254 | 172.16.15.255 | 126 |
Converter
IP → Integer
2886729728
Mask → CIDR
/ 20
Range (hex)
0xAC100000 — 0xAC100FFF
Quick Converter (no reload)
IP → Integer
Integer → IP
📊 Subnet Visualization
172.16.0.0
172.16.15.255
Network
▲ 172.16.0.0
Broadcast
Usable hosts: 4,094
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 |