| Country: | Liechtenstein |
| Country Link: | Liechtenstein |
| Continent: | Europe |
| Number Format: | xxx xx xx |
| Country Calling Code: | +423 (formerly: +41 75) |
| International Prefix: | 00 |
| Trunk Prefix: | None |
Liechtenstein previously used the Swiss telephone numbering plan (+41) under area code 075.[1] (This was dialled as +41 75 from outside Switzerland and Liechtenstein).[2] However, on 5 April 1999, it adopted its own international code +423.[3] Consequently, calls from Switzerland now require international dialling, using the 00423 prefix and the seven-digit number.[4]
| 1 | 3-4 | Access codes | |
| 2 | 7 | Fixed-line services | |
| 3 | 7 | Fixed-line services | |
| 4 | 7 | reserved | |
| 5 | 9 | reserved | |
| 60-68 | 9 | International mobile services | |
| 69 | 9 | Voicemail services for national mobile services | |
| 7 | 7 | National mobile services | |
| 80 | 7 | Special services: Free services | |
| 81-83 | 7 | Special services (reserved) | |
| 84 | 7 | Special services: Split-cost services | |
| 85-86 | 7 | Special services (reserved) | |
| 87 | 7 | Special services: Fixed-cost services | |
| 88 | 7 | Special services (reserved) | |
| 89 | 7 | Special services: Personal number services | |
| 900 | 7 | Premium services: Business, marketing | |
| 901 | 7 | Premium services: Entertainment, games, callback | |
| 902-905 | 7 | Premium services (reserved) | |
| 906 | 7 | Premium services: Adult entertainment | |
| 907-999 | 7 | Premium services (reserved) |