Per the following document, the last CPU/PSU patch for 184.108.40.206 was released in Oct 2013:
Quick Reference to Patch Numbers for Database PSU, SPU(CPU), Bundle Patches and Patchsets (Doc ID 1454618.1)
You should upgrade to 220.127.116.11 or higher (18.104.22.168 is strongly recommended).
yes, the premier support for 22.214.171.124 was ended in Jan 2015 and 126.96.36.199 seems to be July 2015.
So it makes sense to upgrade to 188.8.131.52
Thanks for the quick reply.