IPScope

When working with IPv4 networks, you will almost always see an IP address paired with a subnet mask or written in CIDR notation . Understanding subnet masks is essential for network troubleshooting, router configuration, setting up local servers, and passing basic networking certifications. Quick answer: A subnet mask separates an IP address into two parts: the network portion and the host portion . CIDR notation (like /24 ) is a shorthand way of expressing how many bits belong to the network portion. What is a subnet mask? An IPv4 address consists of 32 bits divided into four octets. However, an IP address alone does not tell a device which part identifies the network and which part identifies the specific device on that network. The subnet mask acts as a filter or template that tells the operating system and router where the network address ends and the host address begins. Common home network subnet mask example...

Every device connected to the internet actually uses two main types of IP addresses: a local (private) IP address and a public IP address . Understanding the difference between these two addresses helps when setting up home networks, troubleshooting connection issues, configuring remote access, or setting up game servers. Quick answer: Your Local IP is assigned by your home router and identifies your device inside your local network. Your Public IP is assigned by your ISP and identifies your entire network on the global internet. Public vs Local IP Address: What is the difference? Feature Local (Private) IP Public IP Assigned By Your Wi-Fi Router (DHCP) Your Internet Service Provider (ISP) Scope Internal home/office network only Global Internet ...