Hi @Drake E. De Haan,
Best practice would be to split the dial plans for each block, So if you have a user that will always want it to dial block one, then you assign that user the dial plan for that block.
If the used might need to dial all the block then you might need to change your rules, if you have the same 4 digits across all block then you could maybe get the user to dial 14567 and then translate it to block one removing the 1, and then if they need to dial the number in block 4 they will use 44567.
Hope this helps.
Regards,
T