Wikipedia:WikiProject User scripts/Scripts/RBL check

 /* This script adds an "[[DNSBL|RBL]] check" link to the toolbox on IP user/talk/contribs pages.

 <strong style="color: red;">Important:</strong> Some care is required in interpreting the results of this tool. In particular, some of the RBLs shown on the results page are lists of dial-up and/or broadband user IPs, and will thus include the IPs of ''most legitimate Wikipedia editors''. Others are combined lists that may or may not include dial-up and broadband addresses. Being listed on such RBLs does '''not''' mean the IP is an [[WP:OP|open proxy]]. In general, before blocking or reporting an IP as a proxy based on an RBL listing, make sure you carefully read the listing criteria for the matching RBLs first.

 <pre><nowiki>*/

 $.when($.ready,mw.loader.using('mediawiki.util')).then(function(){
 varaddr;
 if(mw.config.get('wgCanonicalNamespace')=="Special"&&mw.config.get('wgCanonicalSpecialPageName')=="Contributions")
 addr=document.forms[0].target.value;
 elseif(mw.config.get('wgCanonicalNamespace')=="User"||mw.config.get('wgCanonicalNamespace')=="User_talk")
 addr=mw.config.get('wgTitle');

 if(!/^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$/.test(addr))return;// not an IP

 mw.util.addPortletLink('p-tb','http://www.robtex.com/rbls/'+addr+'.html',
 'RBL check','t-rblcheck','Multi-RBL check');
 });

 // </nowiki></pre>