Subnet Calculator and

I was recently contacted by the owner the website,, and asked to further develop my Subnet Calculator (mentioned in previous posts) from a WordPress template page to a full-blown plugin. NetTrain provides technical training to individuals seeking to acquire various Cisco Certifications. Thanks to their funding, I was able to allot time and convert the php code […]

Subnet Calculator

Recently, I’ve decided to begin working toward the CCNP certification and have required significant review of CCNA material. As such, in order to review some of the subnet math, I decided to write a subnet calculator in PHP. I’ve spent most of today working on it and hopefully it works well in all cases. However, […]