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Subnet CIDR IP Calculator
Analyze IP ranges, netmasks, broadcast zones, wildcard boundaries, and binary metrics locally.
IP Address
Subnet Mask (CIDR / Prefix)
/0 - (4,294,967,294 hosts)
/1 - (2,147,483,646 hosts)
/2 - (1,073,741,822 hosts)
/3 - (536,870,910 hosts)
/4 - (268,435,454 hosts)
/5 - (134,217,726 hosts)
/6 - (67,108,862 hosts)
/7 - (33,554,430 hosts)
/8 - (16,777,214 hosts)
/9 - (8,388,606 hosts)
/10 - (4,194,302 hosts)
/11 - (2,097,150 hosts)
/12 - (1,048,574 hosts)
/13 - (524,286 hosts)
/14 - (262,142 hosts)
/15 - (131,070 hosts)
/16 - (65,534 hosts)
/17 - (32,766 hosts)
/18 - (16,382 hosts)
/19 - (8,190 hosts)
/20 - (4,094 hosts)
/21 - (2,046 hosts)
/22 - (1,022 hosts)
/23 - (510 hosts)
/24 - (254 hosts)
/25 - (126 hosts)
/26 - (62 hosts)
/27 - (30 hosts)
/28 - (14 hosts)
/29 - (6 hosts)
/30 - (2 hosts)
/31 - (0 hosts)
/32 - (0 hosts)
CIDR Classes
**Class A:** /8 Netmask (16,777,214 hosts)
**Class B:** /16 Netmask (65,534 hosts)
**Class C:** /24 Netmask (254 hosts)
**Loopbacks:** /32 Netmask (1 host)
