Yes you read it right, mine started from EAC180.. See notes section above to get your second answer...... There is no H4EAD premium processing rule, even if you apply with H1/H4 premium processing.Sometimes you might get lucky though.
Thanks for the reply. Please update in the thread when you get the EAD in postal mail. Also till when it is valid. That information will be really helpful to others. All the best, lets all hope the H4 EAD stays !