I'm not sure what you are asking. Do you want to know if these are already "named" and published? Don't rely on Google! Do a search for the 16S rDNA in your organism in a scholarly website (PubMed, Web of Science, etc.). And yes, if your mean 925F and 1392R, these are already published and widely used.
Sometimes I heard come people say V3 V4 variable region 3 and variable region 4, respectively. Or maybe the primers have special name! I looked it up I did not fine any answer.
Abhijeet Singh yes, it is widely used! but I used stagger + barcode when I chose the primer sets and designed in terms of primer dimer and self-complementary that's why I said 'I designed'. Anyway, thanks for the reply!
I have a relevant question:
If it is possible, could you please tell me how we can know which part/ region of 16S rRNA gene are universal?