; <<>> DiG 9.8.3-P1 <<>> @208.122.23.22 cloudflare.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12445 ;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;cloudflare.com. IN A
;; ANSWER SECTION: cloudflare.com. 300 IN A 173.245.60.249 cloudflare.com. 300 IN A 173.245.60.250 cloudflare.com. 300 IN A 173.245.61.248 cloudflare.com. 300 IN A 173.245.61.249 cloudflare.com. 300 IN A 173.245.61.250
;; Query time: 61 msec ;; SERVER: 208.122.23.22#53(208.122.23.22) ;; WHEN: Sun Dec 2 01:24:29 2012 ;; MSG SIZE rcvd: 112
No they don't. CloudFlare just has a security mechanism where known bad or risky IPs are presented with a captcha. However on sites with "max" security, I believe it simply blocks them entirely.
Cloudflare makes websites unavailable if you use services like unblock-us.com (see below)
High amount of 404 I get from cloudflare when browsing /r/pics makes me wonder who is to blame.
Cloudflare is short on locations.
Cloudfront is cheaper if you use SSL.
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➜ ~ dig cloudflare.com
; <<>> DiG 9.8.3-P1 <<>> cloudflare.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 3675 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;cloudflare.com. IN A
;; Query time: 4847 msec ;; SERVER: 208.122.23.22#53(208.122.23.22) ;; WHEN: Sat Dec 1 18:42:43 2012 ;; MSG SIZE rcvd: 32