IP CIDR Subnet Calculator
Calculate IP ranges, subnets, and network boundaries from CIDR notation. Visually split blocks and check IP range matches in real-time.
CIDR Notation
Quick Templates
10.0.0.0/8 (Class A)
172.16.0.0/12 (Class B)
192.168.1.0/24 (Class C)
192.168.0.0/16
Range Membership Checker
Instantly test if a specific IP address is routed inside the active CIDR block boundaries.
Recent Queries
Network Boundaries
Network Address
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Subnet Mask
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Broadcast Address
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Usable IP Range
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Usable Host IPs
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Total Subnet Size
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Binary Allocation Display
IP Address Binary
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Subnet Mask Binary
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Network Bits
Host Bits
Subnet Splitter & Explorer
Divide your primary CIDR block into smaller sub-networks. Select your target prefix boundaries and filter/search matches in real-time. You can load any sub-network as your parent CIDR to drill down.
| Subnet | CIDR Notation | Network Address | Usable IP Range | Action |
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