@itlandytech: Ever wondered how devices communicate securely inside a network without exposing themselves directly to the public internet? That’s where RFC 1918 Private IP Ranges come in. Here is a quick cheat sheet on how private IP addresses are broken down and where they are used: 🔹 Class A: 10.0.0.0/8 * Range: 10.0.0.0 – 10.255.255.255 * Total IPs: ~16.7 Million addresses * Best For: Large enterprises, cloud infrastructure, and service providers requiring massive internal scale. 🔹 Class B: 172.16.0.0/12 * Range: 172.16.0.0 – 172.31.255.255 * Total IPs: ~1.04 Million addresses * Best For: Medium-sized business networks, schools, and corporate branch locations. 🔹 Class C: 192.168.0.0/16 * Range: 192.168.0.0 – 192.168.255.255 * Total IPs: 65,536 addresses * Best For: Home Wi-Fi setups, small offices (SOHO), and local lab environments. 💡 Bonus Special-Use Ranges: * 169.254.0.0/16 (APIPA): Assigned automatically when a device can't reach a DHCP server to get an IP address. * 127.0.0.0/8 (Loopback): Used for internal local testing (localhost) on your own machine. Save this reference for your next networking setup or certification prep! Which range do you work with most in your environment? Let me know in the comments below! 👇 #Networking #ITInfra #CyberSecurity #SystemAdministration #CCNA

itlandytech

Open In TikTok:

Region: GB

Monday 28 September 2026 20:45:28 GMT