Wikipedia has a section dedicated to the perimeter section (of course, take it with a grain of salt)
Taking that grain of salt is strongly advised.
Originally Posted by Wikipedia
In the end the restriction was not lifted, but the FAA was permitted to add additional exemptions, which went not to AWA but to competitor Alaska Airlines. America West (now US Airways) would later gain additional exemptions for non-stop service to Phoenix in 2004.
The original award by the DOT can be read
here. (Warning, large PDF)
My memory has faded so my original post should also be read with a grain of salt; the original awards were
HP LAS x1
HP PHX x2
N7 (National Airlines) LAS x1
TW LAX x1
F9 DEN x1
Alaska didn't even apply in round 1. Wikipedia's commentary is wrong.
Also TZ applied for DCA-SFO in this round.
Then TWA filed Ch11 and the slots went back up for grabs. Alaska applied and won those to SEA.
DOT order here.
Then N7 shut down and their slots were reallocated. DL won them to SLC.
DOT order here.
Round 2 saw the following winners:
AS SEA x1
AS LAX x1
F9 DEN x2
HP PHX x1
UA DEN x1
DOT order here.
I refer to roundtrips and not slots in my post btw.