They're not called regions but for the last couple of years the groups were very much, eh, alligned...
http://en.wikipedia.org/wiki/2011%E2..._round#Seeding
http://en.wikipedia.org/wiki/2010%E2..._round#Seeding
The year before that was the first year of the new Europa League and was completely random, but apparently there was a backlash about that. They won't call them regions, because they want to keep their options open to keep the sme amount of seeded/unseeded in all groups. So last year The 10 Northern seeds came from Ireland (Pats), Sweden x 2, Norway x 2, England, Iceland, Finland, Wales and, eh, Macedonia. The 10 unseeded teams came from Northern Ireland x 2, Faroes x 2, Luxembourg x 2, Latvia, Estonia, Iceland and Wales. Of those countries, Macedonia had another seed in a different group (cental/eastern) and Estonia and Lithuania had unseeded in that same group.
Once again its liekly the 3 fair play spots will be from 'Northern' countries. At the moment I'm confident Pats/Bohs will get one of these...
EB/Streymur Faroes
FK Šiauliai Lithuania
JJK ( Jyväskylä) Finland
Cliftonville Northern Ireland
Daugava Daugavpils Latvia
Llanelli Wales
Crusaders Northern Ireland
Jeunesse d'Esch Luxembourg
Žalgiris (Vilnius) Lithuania
IBV Iceland
Trans (Narva) Estonia
Por Akureyri (1st Div) Iceland
Kalju (Tallinn) Estonia
NSÍ Runavík Faroes
Portadown Northern Ireland
CS Grevenmacher Luxembourg
Víkingur Faroes
Cefn Druids Wales
Only those in bold haven't been confirmed. if a fair play qualifier comes from the lieks of Finland or maybe Norway, they'd be added to this