Example Run:
spalusa@user-1f71bc:~$ python BigipCookieDecoder.py -c rd5o00000000000000000000ffffc0000201o80
[*] Cookie Value String to decode: rd5o00000000000000000000ffffc0000201o80
[*] Decoded IP and port from the cookie with RouteDomain ID is : 192.0.2.1%5:80
spalusa@user-1f71bc:~$ python BigipCookieDecoder.py -c 4044032035.39455.0000
[*] Cookie Value String to decode: 4044032035.39455.0000
[*] Decoded IP and port value from the cookie is : 35.8.11.241:8090
REFERENCE LINK: https://support.f5.com/csp/article/K6917
Reference : https://penturalabs.wordpress.com/2011/03/29/how-to-decode-big-ip-f5-persistence-cookie-values/ . Thanks to Pentura Labs