<commit_before>---
title: Using sipcalc The Great Subnet Calculator
author: <NAME>
layout: post
date: 2015-02-20 11:20:01
image: osx-001.jpg
twitter_image: osx-001.jpg
description: In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for this site. It's good to know that it wouldn't quite work (bit boundaries and all)
summary: In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for this site. It's good to know that it wouldn't quite work (bit boundaries and all)...
permalink: 2015/02/sipcalc-subnet-calculator/
categories:
  - Networking
tags:
  - sipcalc
  - using sipcalc
  - subnetting
  - subnet calculator
  - osx
  - os x
  - mac os x
  - os x subnet calculator
  - linux
  - ubuntu
  - bsd
---
<hr>
![](http://ipyandy.net/images/osx-001.jpg)
<hr>

In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for *this* site. It's good to know that it wouldn't quite work (bit boundaries and all). 

Though doing an IP design/scheme for an Enterprise entirely in your head is not feasible and extremely error prone (things are always error prone). Enter **sipcalc** a nix (linux, bsd, os x) command-line utility that's fast and supports IPv6, yes that's right IPv6 and all.
<!--more-->
<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script><commit_msg>updated, space between add<commit_after>---
title: Using sipcalc The Great Subnet Calculator
author: <NAME>
layout: post
date: 2015-02-20 11:20:01
image: osx-001.jpg
twitter_image: osx-001.jpg
description: In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for this site. It's good to know that it wouldn't quite work (bit boundaries and all)
summary: In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for this site. It's good to know that it wouldn't quite work (bit boundaries and all)...
permalink: 2015/02/sipcalc-subnet-calculator/
categories:
  - Networking
tags:
  - sipcalc
  - using sipcalc
  - subnetting
  - subnet calculator
  - osx
  - os x
  - mac os x
  - os x subnet calculator
  - linux
  - ubuntu
  - bsd
---
<hr>
![](http://ipyandy.net/images/osx-001.jpg)
<hr>

In the CCNA days we all had to learn how to subnet and work with binary. This was either on paper or in your head if you were quick enough to do it. This really is an invaluable skill when speaking, talking IP design and more. When someone throws out a lets just use the 10.98.0.0/12 for *this* site. It's good to know that it wouldn't quite work (bit boundaries and all). 

Though doing an IP design/scheme for an Enterprise entirely in your head is not feasible and extremely error prone (things are always error prone). Enter **sipcalc** a nix (linux, bsd, os x) command-line utility that's fast and supports IPv6, yes that's right IPv6 and all.
<!--more-->

<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
{'fraction_non_alphanumeric': 0.07516339869281045, 'fraction_numerical': 0.02815485168426345, 'mean_word_length': 3.568312284730195, 'pattern_counts': {'":': 0, '<': 15, '<?xml version=': 0, '>': 15, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 6, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5315947', 'n_tokens_mistral': 1279, 'n_tokens_neox': 1146, 'n_words': 628}