Rat covered the mid-west and I may repeat a few but I can cover the Northeast and Mid-Atlantic for you.
XCV - Carlstadt, NJ
XNJ - Newark, NJ
XAB - Albany, NY
XNW - Newburgh, NY
XPB - Pittsburgh, Pa
XLF - Clearfield, Pa
XMI - Milton (New Columbia), Pa
XHG - Hagerstown, Md (Greencastle, Pa)
NRM - Richmond, Va
NCH - Charlotte, NC
XPP - Portland, Me
XSX - Springfield, Ma
XKR - Scarborough, Ontario Ca
NAT - Atlanta, Ga
XTO - Toledo, Oh
Some Southern ones I know from building loads and talking with Southern drivers.
NBM - Birmingham, Al
NOF - Orlando, Fl
LJS - Jackson, Ms
Shreveport, La - LSL? not sure if that's the code.
LTU - Tulsa, OK
Some meet locations..
XJN - Bedford, Pa Columbus, Oh meets the Mid-Atlantic terminals here. Huge miles for Columbus.
NRO - Roanoke, Va XHG meets Knoxville, Tn here on days and nights.
NLE - Lexington, Va XHG meets Charlotte, NC here on days and nights.
XHG - Greencastle, Pa Newburgh, NY meets Roanoke, Va on days.
XET - Marengo, Oh (ex 140 on 71) Clearfield, Pa meets Louisville and Indy on days.
XEL - Milan, OH Gary, IN meets Lordstown, OH and Clearfield, Pa on days.
XLD - Lodi, Oh Milton, Pa meets Indy on days. Huge miles for both.
XCO - Columbus, Oh Pittsburgh, Pa meets someone - probably Indy.
NAT - Atlanta, Ga I believe Charlotte, NC meets Tallahassee, Fl here.
Some random FAC thoughts.. The good ones are XCV, XNJ, XTO, NRM, and XAY - the bad are XMI, XHG, and XNW in my opinion.. The best I was ever at was XAH Ann Arbor, MI till it was closed as a re-ship. XNW - Newburgh, NY gives me indigestion just thinking about it.. Terrible winter road conditions through Pennsylvania and a dump for a terminal once you get there.. And stay there till 6 AM for no good reason..