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Just a few days back my site ranked at 1st place in msn for the terms "pertusis disease". Now it is nowhere to be seen. I made some changes to the site by including 17 new sub-domains. Can this be a reason? Should I remove the sub-domains? Also how do I change the site from http://xyzxyz.com to http://www.xyzxyz.com?
Thank you in advance for your advice.

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Brief, practical checklist for a sudden rank drop after adding many subdomains (applies to xyzxyz.com). Building on points from , and , here are steps to diagnose and recover without repeating earlier suggestions.

First, immediate checks to run now: verify that www and the bare domain both resolve to the correct IP and that the server returns a 200 for the preferred pages; check the HTTP headers for accidental noindex or X-Robots directives; look at your server logs for recent 4xx/5xx spikes or a drop in crawler visits; use the search engines' site: operator (for example site:xyzxyz.com) to compare what is indexed under each host and whether the top page is indexed at all.

Next, consolidation and fixes to apply: pick one canonical host (either xyzxyz.com or www.xyzxyz.com) and make all public URLs point to it. Use permanent redirects from the non-preferred host to the preferred host, ensure your XML sitemap lists only canonical URLs, add rel=canonical links where appropriate, and make internal links consistent (use the canonical host in internal absolute links). If subdomains are duplicating content, either merge the content under the main host or ensure each subdomain has unique, valuable content and its own crawlable configuration.

Finally, monitoring and cautions: after making changes expect re-crawl and re-ranking to take days or weeks. Watch crawl logs and your webmaster tools for errors or messages. Avoid spawning many low-quality subdomains — they dilute signals and crawl budget. If rankings do not recover after several weeks and logs/search console show nothing obvious, gather specific examples (URL, response headers, log excerpts) and escalate to support/forums for targeted troubleshooting.

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Member Avatar for stymiee

Just a few days back my site ranked at 1st place in msn for the terms "pertusis disease". Now it is nowhere to be seen. I made some changes to the site by including 17 new sub-domains. Can this be a reason? Should I remove the sub-domains?

MSN does this as they continue to tweak their algorithm. Couldn't hurt to try though as you have nothing to lose.

Also how do I change the site from http://xyzxyz.com to http://www.xyzxyz.com?
Thank you in advance for your advice.

RewriteEngine On
RewriteCond %{HTTP_HOST} !^(.*)\.domain\.com$ [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]
Member Avatar for newonlineinfo

Hi,

Please check for the website's cache in MSN. i.e try to find info, when you type the entire URL in the MSN search box. Add as many one-way links, which will greatly help you in rankings :)

Let me know if you need one-way links :)

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