In this section you can find information about the towns included in the study
| Town | Dialects | Maps | Records |
| Aritzu | 4 | ||
| Áriz | 0 | ||
| Arizcuren | 0 | ||
| Arizkun | 36 | ||
| Arleta | 1 | ||
| Armendarits | 3 | ||
| Arnéguy | 13 | ||
| Aróstegui | 4 | ||
| Arraioz | 12 | ||
| Arraitz-Orkin | 4 | ||
| Arrarats | 18 | ||
| Arraute-Charritte | 2 | ||
| Arre | 1 | ||
| Arribe | 5 | ||
| Arrieta | 0 | ||
| Arróniz | 0 | ||
| Arruazu | 72 | ||
| Arruitz | 6 | ||
| Artajona | 0 | ||
| Artaza | 0 | ||
| Artazu | 0 | ||
| Artica | 0 | ||
| Artozqui | 0 | ||
| Ascarat | 3 | ||
| Astitz | 3 | ||
| Astráin | 0 | ||
| Atallu | 2 | ||
| Atondo | 0 | ||
| Auritz/Burguete | 7 | ||
| Aurizberri/Espinal | 3 | ||
| Aurtitz | 7 | ||
| Auza | 11 | ||
| Ayegui | 0 | ||
| Ayherre | 3 | ||
| Azkarate | 4 | ||
| Azoz | 0 | ||
| Azparren | 0 | ||
| Azpilkueta | 10 | ||
| Azpirotz | 6 | ||
| Bakaiku | 45 | ||
| Banca | 8 | ||
| Baquedano | 2 | ||
| Baraibar | 5 | ||
| Barásoain | 0 | ||
| Barbarin | 1 | ||
| Béguios | 7 | ||
| Béhasque-Lapiste | 1 | ||
| Béhorléguy | 1 | ||
| Beintza-Labaien | 22 | ||
| Belascoáin | 0 |
