Absolutely thinking this may be counting upwards from 300,000 (mostly). Going off Zenmaster's list:
In-store (EST)
3/31 9:30am 370xxx
3/31 10:00am 36xxxx
3/31 10:00am 37xxxx
3/31 10:05am 371xxx
3/31 2:35pm 36xxxx (france)
3/31 10:08am 371xxx
3/31 10:10am 371xxx
3/31 10:15am 37xxx2
3/31 10:30am...