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IPv4 Subnet Calculator
Enter a valid IPv4 address
Enter subnet mask or CIDR notation
Network Information
Network Address:
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Broadcast Address:
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First Usable IP:
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Last Usable IP:
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Subnet Details
Usable Hosts:
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Wildcard Mask:
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CIDR Notation:
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IP Class:
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Subnet Mask Details
Subnet Mask (Decimal):
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Subnet Mask (Binary):
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IPv4 Class Reference
| Class | Range | Default Subnet Mask |
|---|---|---|
| A | 1.0.0.0 – 126.255.255.255 | 255.0.0.0 |
| B | 128.0.0.0 – 191.255.255.255 | 255.255.0.0 |
| C | 192.0.0.0 – 223.255.255.255 | 255.255.255.0 |
| D | 224.0.0.0 – 239.255.255.255 | Reserved (Multicast) |
| E | 240.0.0.0 – 255.255.255.255 | Reserved (Experimental) |
Network Tools
IP Range to CIDR Converter
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CIDR to IP Range Converter
Wildcard Mask Calculator
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IPv6 CIDR to IP Range Converter
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Ping Traceroute
Binary to Decimal Converter
Decimal to Binary Converter
CIDR Prefix Length Converter
Binary to Hexadecimal Converter