How can I read cookie value using by frames

I need to check cookie value using by frames on browser.
mean I need to check which server is currently my browser hitting this time so I can read that and can log into my test logs so we can get exact all details regarding any issue.

Manually I am doing this by below steps

1) open chrome and hit url

2) inspect browser and go to Application >> Cookies >> url>> here I need to check value for ROUTEID

Can anyone please help me how can I get this value by using script?