IP Change Cause Apache Page

[E-IndiaWeb]

I have 5 IP addresses with my server 2 of them used. I moved one site of mine example.com from ip xx.xx.xx.x1 to xx.xx.xx.x3 . Now i see apache welcome page. I noticed that this page only displays when there is no account configured on the server for domain.
Anyone explains the issue ?

[E-IndiaWeb]

I left one domain on test and found after 12 hours it stared working on new page.

[darren.nolan]

Yes correct - DNS propergation.

Let's take this for example.

123.456.789.1 - Taken (reserved)
123.456.789.2 - Taken (reserved)
123.456.789.3 - www.your-website.com
123.456.789.4 - <nothing>

So you're checking out your site, then change your IP of the website. The list is as follows.

123.456.789.1 - Taken (reserved)
123.456.789.2 - Taken (reserved)
123.456.789.3 - <nothing>  "What you looking for? Can't find it - I'll show the apache page"
123.456.789.4 - www.your-website.com

But your computer (until DNS updates) will still look at the orginal IP, for usually 4 hours. Of course, DNS can take up to 72 to fully do it's thing.

Change IPs sparingly, or take note it can take a while to sort itself