Nginx 1.6.2 - Redirect users base on 4 digits number provide

[mottycruz]

Hello All, 

I am trying to redirect users base on four digits number they provide. For
instance, if they provide a number 4024 they will be redirect to web server
name fly.fqdn.com, if digits are 5025 they will be directed to another web
server name guide.fqdn.com. if this possible? if so, can someone point to
instructions, I am confuse. New to Nginx. 

Thanks in advance, 
Motty

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,253708,253708#msg-253708