IP Subnet Netmask Cheatsheet w/ Cisco Wildcards. Fri, 2011-10-07 17:32; Retrobits: Show 100: An Interview with Bil Herd, former Commodore Engineer (Part I) Fri, 2011-10-07 22:40; I had a great time with Earl Evans who makes interviewing look easy (It's not).
Subnet Mask Cheat Sheet | OpenVPN Hosts Netmask Amount of a Class C /30: 4: 255.255.255.252: 1/64 /29: 8: 255.255.255.248: 1/32 /28: 16: 255.255.255.240: 1/16 /27: 32: 255.255.255.224: 1/8 /26: 64 Subnetting Reference Sheet Class: Size: Subnet Mask: Range of IPs: Class A: 10.0.0.0/8: 255.0.0.0: 10.0.0.0 - 10.255.255.255: Class B: 172.16.0.0/12: 255.240.0.0: 172.16.0.0 - 172.31.255.255 Netmask Quick Reference Chart - Unixwiz.net
Jul 17, 2005
IP Calculator / IP Subnetting IP Calculator. ipcalc takes an IP address and netmask and calculates the resulting broadcast, network, Cisco wildcard mask, and host range. By giving a second netmask, you can design subnets and supernets. It is also intended to be a teaching tool and presents the subnetting results as easy-to-understand binary values. Subnet Calculator
Online IP Subnet Calculator
Calculate all the subnet information you may need. It's fast, it's easy, it allows you to cut and paste and it accepts both CIDR (/24) and netmask notation (255.255.255.0). You may also want to learn how to subnet or check out the more advanced calculator which will allow you to plan a whole network out.