Subnet Mask • Usable Host Range • Binary Breakdown
IP Subnet & CIDR Calculator
Calculate network addresses, broadcast IDs, usable host ranges, and wildcard masks in real-time with binary breakdown.
255.255.255.0
Network Address:
192.168.1.0/24
Broadcast Address:
192.168.1.255
Usable Host Range:
192.168.1.1 - 192.168.1.254
Total Usable Hosts:
254 (256 total)
Subnet Mask:
255.255.255.0
Wildcard Mask:
0.0.0.255
IP Classification:
Class C (Private RFC 1918)
Reverse DNS Zone:
1.168.192.in-addr.arpa
Binary Representation:
IP (Binary):11000000.10101000.00000001.00000001
Mask (Binary):11111111.11111111.11111111.00000000
| CIDR | Subnet Mask | Usable Hosts | Use Case |
|---|---|---|---|
| /32 | 255.255.255.255 | 1 | Single Host / Loopback |
| /30 | 255.255.255.252 | 2 | Point-to-Point WAN |
| /29 | 255.255.255.248 | 6 | Small Server Subnet |
| /28 | 255.255.255.240 | 14 | Branch Office LAN |
| /27 | 255.255.255.224 | 30 | Small Business LAN |
| /24 | 255.255.255.0 | 254 | Standard Class C LAN |
| /16 | 255.255.0.0 | 65,534 | Enterprise VPC / Class B |
| /8 | 255.0.0.0 | 16,777,214 | Major Cloud Region / Class A |
Dedicated IPv4 & /64 IPv6 Subnet Included
Deploy Cloud VPS with automated reverse DNS (PTR), DDoS mitigation, and firewall rules.
How Subnet Masking and CIDR Routing Work
Subnetting is the process of partitioning a single physical network into multiple logical subnetworks. By applying a bitwise AND operation between an IP address and its subnet mask, network routers instantly determine whether destination packets belong to the local network or must be routed across gateways.
RFC 1918 Private Address Allocation
Private networks rely on non-routable IP ranges that are translated to public IPs via NAT (Network Address Translation):
- 10.0.0.0/8: 10.0.0.0 to 10.255.255.255 (16,777,216 addresses)
- 172.16.0.0/12: 172.16.0.0 to 172.31.255.255 (1,048,576 addresses)
- 192.168.0.0/16: 192.168.0.0 to 192.168.255.255 (65,536 addresses)
Routing & IP Management