ISOGG Phylogenetic name: R1b1a1a2a1a2c1d2, as of July 2016

R-Z253 is one subclade of R-L21. According to the YFull tree, it was formed 4.3 kya and the TMRCA is 4.3 kya.

Subclades, downstream SNPs:

From https://www.familytreedna.com/groups/r-z253/about/background on 17 Jul 2016.

If you are Z253+ then you can do further SNP testing to determine which subclade of Z253 you might belong to. The currently known structure of Z253 and its subclades is as follows: