Networking & Infrastructure Suite
Subnet & CIDR IP Calculator
Calculate IPv4 subnets, usable host ranges, broadcast addresses, wildcard masks, and binary bitwise notations in real-time.
/1 (2B IPs)
/8
/16
/24 (256 IPs)
/32 (1 IP)
Computed Network Specifications
CIDR Notation
192.168.1.1/24
Network Address (First IP)
192.168.1.0
Broadcast Address (Last IP)
192.168.1.255
Subnet Mask
255.255.255.0
Wildcard Inverse Mask
0.0.0.255
Usable Host Range
192.168.1.1 - 192.168.1.254
Total Host Addresses
256
Usable Host Hosts
254
IP Class & Type
Class C (Private)
Binary Representation
IP Address: 11000000.10101000.00000001.00000001
Subnet Mask: 11111111.11111111.11111111.00000000
Complete IPv4 Subnetting & CIDR Reference Guide
| CIDR | Subnet Mask | Total IPs | Usable Hosts | Class / Common Use |
|---|---|---|---|---|
| /32 | 255.255.255.255 | 1 | 1 (Host Route) | Single Device / Loopback |
| /30 | 255.255.255.252 | 4 | 2 | Point-to-Point WAN Links |
| /29 | 255.255.255.248 | 8 | 6 | Small Office / DMZ Subnets |
| /28 | 255.255.255.240 | 16 | 14 | Small Server VLANs |
| /24 | 255.255.255.0 | 256 | 254 | Standard Local LAN (Class C) |
| /16 | 255.255.0.0 | 65,536 | 65,534 | Enterprise Campus Network (Class B) |
| /8 | 255.0.0.0 | 16,777,216 | 16,777,214 | Carrier / ISP Allocation (Class A) |
Frequently Asked Questions (FAQ)
In standard IPv4 subnets, the very first address is reserved as the Network Identifier (e.g.
192.168.1.0), and the very last address is reserved as the Broadcast Address (e.g. 192.168.1.255). Devices cannot use these two special addresses.
Classless Inter-Domain Routing (CIDR) is a method for allocating IP addresses and IP routing. Instead of fixed Class A, B, and C boundaries, CIDR specifies the exact count of leading bits in the routing prefix (such as
/24 for 24 bits).