If you are I1 per 23andme, then you would be M253+, which is just one of the many different SNPs (a kind of mutation) which define the YDNA haplogroup I1. It's not unusual to be a member. I1 is strongly a northern European haplogroup; so being a member of it would suggest your paternal line likely immigrated from somewhere in northern Europe (UK, Netherlands, Denmark, Germany, Sweden, Norway, western Finland, etc). 23andme's test is a great intro test to consumer genetics, as you get a sample of all the different things you can do with it (medical propensity, autosomal traits, some autosomal genetic genealogy, etc), but being the jack of all trades means it's the master of none; so if you are looking to your Y chromosome for clues to your paternal line, you would likely require different, more specialized tests.