IP Address Info
Analyze IP addresses and find your public IP.
Analyze IP Address
Common CIDR Notation
| CIDR | Subnet Mask | Hosts |
|---|---|---|
| /8 | 255.0.0.0 | 16,777,214 |
| /16 | 255.255.0.0 | 65,534 |
| /24 | 255.255.255.0 | 254 |
| /25 | 255.255.255.128 | 126 |
| /26 | 255.255.255.192 | 62 |
| /27 | 255.255.255.224 | 30 |
| /28 | 255.255.255.240 | 14 |
| /30 | 255.255.255.252 | 2 |
| /32 | 255.255.255.255 | 1 |
Private IP Ranges (RFC 1918)
10.0.0.0/8Class A private network10.0.0.1 - 10.255.255.254
172.16.0.0/12Class B private network172.16.0.1 - 172.31.255.254
192.168.0.0/16Class C private network192.168.0.1 - 192.168.255.254
127.0.0.0/8Loopback127.0.0.1
169.254.0.0/16Link-local (APIPA)169.254.0.1 - 169.254.255.254
About IP Addresses
An IP (Internet Protocol) address is a unique identifier assigned to devices on a network. There are two versions: IPv4 (32-bit, e.g., 192.168.1.1) and IPv6 (128-bit, e.g., 2001:0db8::1).
Public vs Private
- Public IPs - Globally unique, routable on the internet
- Private IPs - Used within local networks, not routable on the internet
IP Classes (IPv4)
- Class A - 1.0.0.0 to 126.255.255.255
- Class B - 128.0.0.0 to 191.255.255.255
- Class C - 192.0.0.0 to 223.255.255.255