And the middle digit was the biggest factor in dialing length, because before 1995 is was required to be 0 or 1. But the fastest "0" area code (202, Washington

And the middle digit was the biggest factor in dialing length, because before 1995 is was required to be 0 or 1. But the fastest "0" area code (202, Washington DC) was still two pulses faster than the slowest "1" area code (916, northern California.)