Thanks for the explanation.
Sorry, not able to understand you fully.
My PCRE is something like this (have tested it through
https://regex101.com/)
.+\..{3}(?P<route>.{6})[^\.]*$
Now, to achieve this what should I put in the nginx.conf
Please let me know.
Posted at Nginx Forum: http://forum.nginx.org/read.php?2,258636,258646#msg-258646