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IPv4 network
Enter an IPv4 address and choose a CIDR prefix to inspect the network it belongs to.
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Subnet Mask — Binary
—Network bitsHost bits
Subnet details
Usable host range
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Network / CIDR—
Network address—
Subnet mask—
Broadcast address—
Total addresses—
Usable addresses—
RFC 1918 private IPv4 ranges
RFC 1918 reserves these address blocks for private networks. They are not globally routable on the public Internet and are commonly used inside homes, businesses and cloud networks.
| Private range | CIDR | Addresses |
|---|---|---|
10.0.0.0 – 10.255.255.255 | 10.0.0.0/8 | 16,777,216 |
172.16.0.0 – 172.31.255.255 | 172.16.0.0/12 | 1,048,576 |
192.168.0.0 – 192.168.255.255 | 192.168.0.0/16 | 65,536 |
Private addressing is defined by RFC 1918. Other special-purpose IPv4 ranges exist for loopback, link-local, documentation, carrier-grade NAT and other uses.
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General information only. Results are estimates and may differ from provider calculations, market outcomes or local rules.