Free Online IP Subnet Calculator from get-ip-address.com

CIDR stands for Classless Inter-Domain Routing, an IP addressing scheme. A single IP address can designate many unique IP addresses using CIDR. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number, the IP network prefix. CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations.

CIDR to IP Range
CIDR notation converter

Calculate IP range based on CIDR notation to display Total Host, Netmask, Wildcard Bits, the first IP, and the last IP in the subnet range.

Recently searched CIDR addresses:

Need web hosting for your projects?

If you need web hosting for your latest project or your webshop, be sure to visit our technical partner sites. These hosting and cloud providers can help you get the best results from your web applications and e-commerce.

If you are looking for hosting in the EU, visit 4bis.nl EU Webhosting. If you are looking for web hosting in the US and America, then US and America's Webhosting with thehostmasters.com is the best choice for web hosting and cloud.

Popular IP Tools & Questions Answered
  • What is my IP address?
  • Look up IP address owner
  • Find IP address location
  • Search public or private IP address
  • Reverse IP domain lookup
  • IP to location tool
  • IPv4 vs IPv6 explained
  • How to find your IP address
  • What is an IP address used for?
  • Whois & network diagnostics
  • Can someone track my location from IP?
  • Is my IP blacklisted?
  • What is a dynamic vs static IP?
  • How to hide or change your IP address
  • What does my IP reveal about me?
Explore All Network Tools

📘 What Is an IP Address and Why Does It Matter?

An IP address (Internet Protocol address) identifies a device on a local or global network. It's like a digital street address that allows devices to communicate and exchange data.

IPv4: A 32-bit address format, such as 127.0.0.1. Still widely used across the internet.

IPv6: A 128-bit format like 2001:db8:85a3::8a2e:370:7334, created to handle the growing number of connected devices.

With our free online tools, you can:

❓ Frequently Asked Questions

No, your IP address alone cannot reveal your personal identity. It may show your approximate location and your internet service provider (ISP), but not your name or exact address.

IP geolocation is generally accurate to the city or region level. Accuracy can vary depending on the database used and the ISP’s infrastructure.

Public IP addresses are assigned by your ISP and visible on the internet. Private IPs are used within local networks and are not directly reachable from the internet.

You can perform a WHOIS lookup to find out the organization, ISP, or company associated with an IP address, along with contact information and location.

Yes, you can block IPs using firewalls, server configuration files like .htaccess, or web application firewalls (WAFs) to prevent unwanted access or abuse.

Use our blacklist checker to scan multiple DNS-based blacklists (DNSBLs) to see if the IP is flagged for spam, malware, or abusive behavior.
🔍 What Is My IP?🛠 Network Tools