For the past several years I have managed a site for a client and they ranked quite well for about 5 key terms.
Over this time, one word ranked page #1 (top 5) consistently and the others fluctuated between page 1 and 2. Not super competitive but the top keyword produced 5,300,000 results in google.
On Dec. 2 this particular keyword ranked #5 for my clients site and the other words were in the top 10 and top 20 positions.
Today, when I checked, the keywords do not rank at all. I have checked through 10 pages of results and no listing of my clients website.
The site is still indexed, we have not made any major changes in the last few months and nothing at all in the last few weeks.
We also checked in Webmaster Tools and there are no errors, sitemap.xml is OK with pages submitted and pages indexed.
Does anyone know if anything happened to Google recently?
The site is hosted on Network Solutions and the IP address does not appear to be banned.
Any help is appreciated.