| Ab | Ab(A) Azerbaijan (core)
Ab(N) Nakhchivan | Es | Estonia | Ma | Morocco, with Spanish Territories |
| AE | AE(G) Greek East Aegean Islands
AE(T) Turkish East Aegean Islands | Fa | Faeroe Islands | Md | Madeira archipelago: Md(D) Desertas
Md(M) Madeira
Md(P) Porto Santo |
| Ag | Algeria | Fe | Finland | Mk | North Macedonia |
| Al | Albania | Ga | Ga(C) Channel Islands
Ga(F) mainland France (without Co)
Ga(M) Monaco | Mo | Moldova |
| Ar | Armenia | Ge | Germany | No | Norway (without Sb) |
| Au | Au(A) Austria
Au(L) Liechtenstein | Gg | Gg(A) Abkhazia
Gg(D) Adjara
Gg(G) Georgia (core) | Po | Poland |
| Az | Azores: Az(C) Corvo
Az(F) Faial
Az(G) Graciosa
Az(J) São Jorge
Az(L) Flores
Az(M) São Miguel
Az(P) Pico
Az(S) Santa Maria
Az(T) Terceira | Gr | Greece,
with Ionian, N and W Aegean Islands and Kiklades
(without AE(G) and Cr) | Rf | Russian Federation: Rf(A) Novaya Zemlya and Franz Joseph Land
Rf(C) C European Russia
Rf(CS) North Caucasus
Rf(E) E European Russia
Rf(K) Kaliningrad region
Rf(N) N European Russia
Rf(NW) NW European
Russia
Rf(S) S European Russia |
| Be | Be(B) Belgium
Be(L) Luxembourg | Hb | Hb(E) Ireland
Hb(N) Northern Ireland | Rm | Romania |
| BH | Bosnia-Herzegovina | He | Switzerland | Sa | Sardinia |
| Bl | Balearic Islands: Bl(I) Ibiza
Bl(M) Mallorca
Bl(N) Menorca | Ho | Netherlands | Sb | Svalbard: Spitsbergen, Björnöya and Jan Mayen |
| Br | United Kingdom (without Ga(C) and Hb(N)) | Hs | Hs(A) Andorra
Hs(G) Gibraltar
Hs(S) mainland Spain (without Bl and Ca) | Se | Serbia |
| Bt | Baltic countries (Es + La + Lt + Rf(K)) | Hu | Hungary | Sg | Salvage Islands |
| Bu | Bulgaria | IJ | Israel/Palestine and Jordan (Ir + Jo) | Si | Si(M) Malta
Si(S) Sicily |
| By | Belarus | Ir | Israel/Palestine | Sk | Slovakia |
| Ca | Canary Islands Ca(C) Gran Canaria
Ca(F) Fuerteventura
Ca(G) Gomera
Ca(H) Hierro
Ca (L) Lanzarote
Ca(P) La Palma
Ca(T) Tenerife | Is | Iceland | Sl | Slovenia |
| Cc | Caucasia (Ab + Ar + Gg + Rf(CS)) | It | Italy, with San Marino and Vatican City (without Sa and Si(S)) | Sn | Sinai |
| Cg | Montenegro | Jo | Jordan | Sr | Serbia with Kosovo |
| Cm | Crimea | Ju | Former Yugoslavia (BH+Cg+Ct+Ko+Mk+Se+Sl) | Su | Sweden |
| Co | Corsica | Ko | Kosovo | Sy | Syria |
| Cr | Crete and Karpathos island groups | La | Latvia | Tcs | South Caucasian countries (Ab + Ar + Gg) |
| Cs | Czech Republic | Le | Lebanon | Tn | Tunisia |
| Ct | Croatia | Li | Libya | Tu | Tu(A) Turkey, Asiatic part (without AE(T))
Tu(E) Turkey-in-Europe |
| Cy | Cyprus | LS | Lebanon and Syria (Le+Sy) | Uk | Ukraine (without Cm) |
| Da | Denmark (without Fa) | Lt | Lithuania | | |
| Eg | Egypt (without Sn) | Lu | Portugal
(without Az, Md and Sg) | | |
