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subnet calculator · IPv4
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Subnet Calculator
Network address, broadcast, hosts, masks and binary breakdown.
Enter any IP with CIDR notation.
Calculate
Quick:
/8 Class A
/12 Class B
/16 Class C
/24 LAN
/25 Half
/30 P2P
/0 All
Loopback
subnet.calc
Network Address
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Broadcast Address
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First Host
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Last Host
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Usable Hosts
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Total IPs
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Subnet Mask
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Wildcard Mask
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CIDR / Prefix
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IP Range · Visual
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Network
First host
Last host
Broadcast
Binary Breakdown
Subnet Split — divide into smaller networks
New prefix
Subnets
Hosts each
Example