We're still getting a few requests for old chat urls.
Could you all please clear browser caches and flush dns cache if possible?
How to clear your browser cache
Firefox
From the History menu, select Clear Recent History. ...
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Next to "Details", click the down arrow to choose which elements of the history to clear; to clear your entire cache, select all items.
Chrome
Open Chrome.
On your browser toolbar, tap the 3-dot icon .
Tap History, and then tap Clear browsing data.
Under "Clear browsing data," select the checkboxes for Cookies and site data and Cached images and files.
Use the menu at the top to select the amount of data that you want to delete. ...
Tap Clear browsing data.
IE
Clearing the cache
Open Internet Explorer.
IE 8: From the Tools menu choose Internet Options. ...
On the General tab, under Browsing history, click Delete.
Un-check the Preserve Favorites website data box.
Check the Temporary Internet files, Cookies, and History boxes.