# Extension default namespaces - Host: [mediawiki.org](https://links.thingelstad.xyz/hosts/mediawiki.org/) - Saved: May 29, 2013 (2013-05-29T19:55:49Z) - Record: https://links.thingelstad.xyz/links/5750afb22f1b/ - JSON: https://links.thingelstad.xyz/links/5750afb22f1b.json ## What Jamie wrote Learning a little too late that 100-199 is the user namespace area. > The namespaces in 100-199 are reserved for site-specific namespaces, and should not be used by extensions. A few extensions have apparently used this area, so be careful using them. If you're writing a new extension you should never hardcode any namespaces inside the 100-199 range. ## Facts - Kind: [Page](https://links.thingelstad.xyz/kinds/page/) ## Same host - [Hosting services - MediaWiki](https://links.thingelstad.xyz/links/4e89e21185c5/) (mediawiki.org, February 15, 2013) - [Software bundles - MediaWiki](https://links.thingelstad.xyz/links/666dffc1872c/) (mediawiki.org, February 15, 2013) - [Scribunto Lua reference manual](https://links.thingelstad.xyz/links/99541bc2baf0/) (mediawiki.org, February 22, 2013) - [Wikimedia Hackathon Amsterdam 2013](https://links.thingelstad.xyz/links/33a528de71e4/) (mediawiki.org, April 20, 2013) - [Mediawiki-Vagrant](https://links.thingelstad.xyz/links/3f3e3cc6ca9d/) (mediawiki.org, May 7, 2013) ## Saved the same week - [Mwparserfromhell](https://links.thingelstad.xyz/links/c4e89e4a7095/) (github.com, May 29, 2013) - [Pure](https://links.thingelstad.xyz/links/7768008034d4/) (purecss.io, May 29, 2013) - [Coding Horror: A Visual Explanation of SQL Joins](https://links.thingelstad.xyz/links/b5590466fe8f/) (blog.codinghorror.com, May 29, 2013) - [Coffee vs. beer: which drink makes you more creative? What I Learned Today Medium](https://links.thingelstad.xyz/links/46fb2607a039/) (medium.com, May 29, 2013) - [EFF and Facebook Stand Up for User Privacy and Control in California Case](https://links.thingelstad.xyz/links/557c876fc4d1/) (eff.org, May 29, 2013) ## Elsewhere - Wayback Machine: https://web.archive.org/web/*/http://www.mediawiki.org/wiki/Extension_default_namespaces