| Code | Schemes | English name | Owner |
|---|---|---|---|
| ABT | Tirana | — | — |
| BGS | Sofia | — | — |
| BLB | Bruxelles or Brussels | Belgium | — |
| BYM | Minsk | — | — |
| CIJ | Jersey | — | — |
| CTS | Colombian Tree Scheme | Colombia | — |
| CYC | Nicosia | — | — |
| CZIP | Montenegro Bird Ringing Scheme | Montenegro | — |
| CZP | Praha | — | — |
| DEH | Hiddensee | — | — |
| DER | Radolfzell | — | — |
| DEW | Wilhelmshaven (Helgoland) | — | — |
| DKC | Copenhagen | — | — |
| ESA | San Sebastian (Aranzadi) | Spain | — |
| ESI | Madrid (ICONA) | — | — |
| ETM | Matsalu | — | — |
| FRP | Paris | — | — |
| GBT | London (British Museum; Tring; Thetford) | — | — |
| GET | Georgia Bird Ringing Scheme | Georgia | — |
| GRA | Athens | — | — |
| HES | Sempach | — | — |
| HGB | Budapest | — | — |
| HRZ | Zagreb (Ornit. Inst.) | — | — |
| IAB | Bologna Ozzano (BO) | — | — |
| ISR | Reykjavik | — | — |
RingBase adheres to EURING codes.
