IP Info & Subnet Calculator
View your public IP, calculate subnets, and reference IP standards.
Your Public IP
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Subnet Calculator
CIDR Reference
/8 —
255.0.0.0 — 16,777,214 hosts (Class A)/16 —
255.255.0.0 — 65,534 hosts (Class B)/24 —
255.255.255.0 — 254 hosts (Class C)/25 —
255.255.255.128 — 126 hosts/26 —
255.255.255.192 — 62 hosts/27 —
255.255.255.224 — 30 hosts/28 —
255.255.255.240 — 14 hosts/29 —
255.255.255.248 — 6 hosts/30 —
255.255.255.252 — 2 hosts (point-to-point)/32 —
255.255.255.255 — 1 host (single address)IPv4 vs IPv6
IPv4 — 32-bit address,
192.168.1.1, ~4.3 billion addresses, NAT commonIPv6 — 128-bit address,
2001:0db8::1, ~340 undecillion addresses, no NAT neededPrivate IPv4 Ranges —
10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16Loopback — IPv4:
127.0.0.1, IPv6: ::1Link-Local — IPv4:
169.254.0.0/16, IPv6: fe80::/10