Network, mask, broadcast and usable range. Calculated on your device. The starting /24 is illustrative, not your detected network; IPv6 connections use a documentation IPv4 example.
Supports /0 through /32, including point-to-point /31 networks.
Get to Know an Address.
Check IPv4 or IPv6 format, address scope and reverse DNS.
Use
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More than a string of numbers.Inspect an address to see its structure.
Address scope does not establish ownership or reachability. IPv4 vs IPv6 ↗
40 requests / minuteOne rolling allowance per source IP across the site.
30 DNS lookups / minuteDNS and reverse DNS share this budget within the total.
Your provider may assign addresses dynamically. Switching Wi-Fi, mobile networks, VPN endpoints or IP protocols can change the address a service sees.
Can an IP address tell someone where I live?
Not precisely. IP location databases are approximate and can describe a provider’s network rather than your device. ABOUTIP does not request GPS location. The time zone above comes from your browser.
Does the subnet calculator detect my network?
No. The starting prefix is an example, not a measured network mask. Enter the IPv4 address and prefix you actually want to calculate. The calculation runs locally in your browser.
Can I use ABOUTIP in a script?
Yes. Use the CLI / API guide. The overall allowance is 40 requests per source IP in a rolling 60 seconds. Pages and API requests share it; DNS and reverse DNS have an additional shared lookup budget.
Both carry internet traffic. They use different address formats, and your device may use both.
IPv4: four familiar numbers
An IPv4 address contains 32 bits, normally written as four numbers from 0 to 255, such as 192.0.2.10. The address space is limited, which is one reason NAT is common.
IPv6: a much larger address space
IPv6 uses 128-bit addresses written in hexadecimal, such as 2001:db8::10. Leading zeros can be omitted, and a single :: can stand for consecutive groups of zeros. IPv6 has no broadcast addresses; multicast handles many equivalent tasks.
Your connection chooses
A dual-stack network supports both protocols. Your browser selects a working route to a service. The IP on this page describes this request; it does not prove that the other protocol is unavailable. A VPN can affect the two protocols differently.
Are IPv6 addresses private?
IPv6 has different address scopes. ::1 is loopback, fe80::/10 is link-local, and fc00::/7 is unique-local. A globally scoped address does not automatically mean a device is reachable: firewall policy still controls inbound traffic.