Telephone Code Index - 01690
| 710292 | Anna Davies - Conwy |
| 710766 | Beics Betws - Betws Y Coed |
| 770393 | Brodwaith - Conwy |
| 760200 | Brymar Plastics - Betws Y Coed |
| 770395 | Gwniadur - Betws Y Coed |
| 770345 | Hafod Elwy Estate Ltd. - Denbigh |
| 710332 | I B Williams - Llanrwst |
| 710375 | John Vaughan & Son - Llanrwst |
| 710240 | Jones Gwyn L - Llanrwst |
| 710470 | R Parry - Llanrwst |
| 750273 | Robert G Williams - Dolwyddelan |
| 770240 | Roberts, Arfon - Conway |
| 710426 | Snowdonia National Park Visitor Centre (Betws Y Coed) - Betws Y Coed |
| 710117 | Ty-Mawr Lime Ltd - Conwy |
| 720263 | Valkris Communications - Snowdonia - Llanrwst |
| 710309 | Williams Emlyn Clwyd - Llanrwst |