Now that we’re facing the first overlay in Chicago (backround-- the CHI area was suppose to have an overlay 630 but it was opposed so they divided up into 847 AND 630 to not have this - but we will wind up with it anyway)
What I read in a Tribune article was that it wasn’t until 2000 that ALL the phone numbers in 312 and 773 were actually used. The area code 312 was split into 312 and 773 around 1990.
(which in a way makes no sense as you can still get a 312 number so how can they all be used --but that is what the newspaper said)
Now I understand that because numbers are issued in blocks that we run out faster. But if they weren’t just how many WORKING numbers could you get out of an area code?
Obviously you can’t have any starting with 1 and you have to give up the 111.211…911 prefexes
I looked on a couple of area code sites and found lots of info but not this number.