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What is My IP Address?

IP Subnet Calculator

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Pro Tip

Private IP ranges not routed on the internet: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16. Your home router uses these. The 127.0.0.0/8 block is the loopback range — 127.0.0.1 is always "this computer".

Difficulty:Intermediate

Did you know?

IPv4 has only ~4.3 billion addresses (2³²). The internet ran out of unallocated IPv4 addresses in 2011. IPv6 with 2¹²⁸ addresses provides enough for ~340 undecillion addresses — more than a billion addresses per atom on Earth's surface.

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Reviewed May 2026
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