: Why is my site showing as being down for some places and not others? If I go to my website it loads fine. I can use my VPN to jump to various different countries and it also loads fine.

@Heady270

This can be caused by DNS. If your DNS records return different results to different people, you could have a problem.

There are two ways that could happen:


You have multiple A records with different values
You have to have multiple DNS servers that have different information.


Here is how to check using the command line program dig:


Look up the name servers using dig NS:

$ dig NS copyin.com
;; ANSWER SECTION:
copyin.com. 86225 IN NS anuj.ns.cloudflare.com.
copyin.com. 86225 IN NS daisy.ns.cloudflare.com.

Look up the records on each of the nameservers using dig @

$ dig @anuj .ns.cloudflare.com copyin.com
;; ANSWER SECTION:
copyin.com. 300 IN A 104.24.124.141
copyin.com. 300 IN A 104.24.125.141

$ dig @daisy .ns.cloudflare.com copyin.com
;; ANSWER SECTION:
copyin.com. 300 IN A 104.24.124.141
copyin.com. 300 IN A 104.24.125.141



Your two nameservers appear to have consistent information, however they each have two A records with different IP addresses. This implementation is called "round robin DNS" and it will cause clients to randomly get one IP address or the other.

It could be that this is on purpose and those two IP addresses are both available to serve your site. It could be that only one is correct and users that get the other get errors. It could be that they are both correct, but sometimes one or the other goes down.

When users are having problems you can test it two ways:


Edit your /etc/hosts or hosts.txt file to manually point your local machine to a specific IP address. Then visit the site in your browser.

104.24.124.141 copyin.com

Use the command line program curl like this:

$ curl -H Host:copyin.com --head 'http://104.24.124.141/'
HTTP/1.1 301 Moved Permanently
Location: copyin.com/
$ curl -H Host:copyin.com --head 'http://104.24.125.141/'
HTTP/1.1 301 Moved Permanently
Location: copyin.com/
$ curl -s --resolve copyin.com:443:104.24.124.141 'https://copyin.com/' | grep -i title
<title ng-bind='PageMeta.title'></title>
<meta content='Copyin' name='apple-mobile-web-app-title'>
<page-meta title='Copyin - Next Generation Email Groups'></page-meta>

$ curl -s --resolve copyin.com:443:104.24.125.141 'https://copyin.com/' | grep -i title
<title ng-bind='PageMeta.title'></title>
<meta content='Copyin' name='apple-mobile-web-app-title'>
<page-meta title='Copyin - Next Generation Email Groups'></page-meta>



It does appear to me that both servers are up and running with your site right now. You should try the same thing when somebody reports having problems.

Since you are using Cloudflare, it could also be somewhat more complicated than this. Cloudflare is a content delivery network (CDN) that uses DNS tricks to try to route users to their "edge network". That is they host servers all around the globe and the DNS somehow points to different places for different users. I'm really not sure how to debug all the possibilities that Cloudflare might put in DNS. My only suggestion would be to ask them to open a command line and ping your site. Ask them for the IP address and test against that yourself.

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@Alves908

Are they trying to access your page from a School or Corporate network? IT might be due to a filtering policy enforced on their network. There also could be other issues inhibiting them from seeing your page. such as Ad blockers and so forth.

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