Get domain "referrer" name on instances that behind Load Balancer

Dear all,

I have setup load balancer and 2 instance behind it, and we make a services that client can put like external script on their site and call my script…so like call, so like this scenario

on website client inside the html call “” to get the data from my services…but i need domain name which is “” on my php script on server…but the server is behind the load balancer which is what i got is the IP from load balancer to instance / server…

but what i want or need is get the domain name of the domain that access or call my function…because from access log i just can see all same ip which is i believe from load balancer (what i want is the real domain that access my server)

is there is any tutorial for this? thank you so much before…sorry if my english hard to understand…thank you again!

Submit an answer
Answer a question...

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Bobby Iliev
Site Moderator
Site Moderator badge
October 22, 2022

Hi there,

What is the framework that you are using? For example with Node this should be achievable with something like req.headers.referrer || req.headers.referer.

Another quick solution would be to accept the referrer domain as a GET parameter, eg.`.