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Some of these are old product tags that no longer exist, some are product tags with parameters like "?orderby=price"
When I use "Fetch as Google", asking Googlebot to crawl one of the 522 pages again, it crawls it just fine.
This status code is not specified in any RFCs, but is used by Cloudflare's reverse proxies to signal that a server connection timed out.
[en.wikipedia.org...]When I use "Fetch as Google", asking Googlebot to crawl one of the 522 pages again, it crawls it just fine.
It could be Google hits CloudFlare's URLs referencing your site hard enough to have CloudFlare access limited to your server by your host, so since you now CloudFlare's IPs are allowed, I'd start by asking if they have a request rate limit that might "kick in" if GoogleBot [or anyone else] hits CloudFlare hard enough to get blocked dynamically -- Sometimes, "allowing access" means they say, "Don't block these IPs", but when those IPs hit a server too hard some other system, such as DDoS attack blocking, kicks in and they get blocked at the firewall anyway, so that's what I'd start asking questions about.
... maybe they think it's an attack. It makes sense to me.
[edited by: brotherhood_of_LAN at 9:30 pm (utc) on Jul 21, 2014]
[edit reason] edited [specifics] out of email. [/edit]