What is an IP address class?

IPv4 addresses are divided into classes A–E based on the leading bits of the first octet. Class A (1–126), B (128–191), C (192–223), D (224–239, multicast), E (240–255, reserved).

How do I know if an IP is private?

Private IPv4 ranges are 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. These are used on local networks and are not routable on the public internet.

Can I look up geolocation here?

This tool focuses on technical IP analysis. Geolocation requires a third-party API service. Use the technical details here and a dedicated geo-IP service for location data.

What is the binary representation used for?

Seeing an IP in binary helps understand subnet masking and CIDR notation. Each octet becomes an 8-bit group, making it easy to see network vs. host portions.

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IP Address Info

Analyze IPv4/IPv6 address technical details

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关于此工具

Enter any IPv4 or IPv6 address to instantly see its class, type (public, private, loopback, link-local), binary representation, subnet info, and broadcast address. Use the 'My IP' button to auto-fill your current public IP via a free API. All analysis runs locally in your browser.

使用方法

1 Enter an IPv4 or IPv6 address in the input field, or click 'My IP' to use your current public IP.
2 The tool validates the format and highlights any errors.
3 View the IP class, type, and binary representation instantly.
4 For IPv4, see the default /24 subnet mask, network address, and broadcast address.

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