It's also worth noting that since Gen 6, they start the next generation at a new ID rounded to 100

So 649 is last Gen 5, then 701 is the first Gen 6
774 is the last Gen 6 (gaps in the middle), then 801 is the first Gen 7

Now, this falls into the list before 900. Just saying

— Joe Merrick (@JoeMerrick) September 24, 2018