Liechtenstein Phone Number Format

Country code +423 — Complete guide to Liechtenstein phone number formats, mobile and landline structures, and area codes.

How Liechtenstein Phone Numbers Are Written

Phone numbers in Liechtenstein have 7 or 9 digits for mobiles and 7 for landlines after the country code +423. A number is written 66X XXX XXX at home and +423 66X XXX XXX in international format. Numbers that take the trunk prefix 0 for domestic calls lose it after +423.

Country code	+423
Digits after +423	7 or 9 digits for mobiles and 7 for landlines
Trunk prefix (domestic calls)	0, dropped after +423
Mobile numbers start with	64–66, 73–75 or 77–79
Exit code (to call abroad from Liechtenstein)	00
Dial from the US	011 423 66X XXX XXX

Mobile vs. Landline Numbers

Mobile numbers

7 or 9 digits after +423, starting with 64–66, 73–75 or 77–79.

66X XXX XXX at home

+423 66X XXX XXX international

Landline numbers

7 digits after +423.

234 XX XX at home

+423 234 XX XX international

Liechtenstein Number Types

Type	Starts with	Written at home	International	From the US
Mobile	64–66, 73–75 or 77–79	`66X XXX XXX`	`+423 66X XXX XXX`	`011 423 66X XXX XXX`
Landline	20–23, 26, 29, 32–34 or 37–39	`234 XX XX`	`+423 234 XX XX`	`011 423 234 XX XX`
Toll-free	80	`800 XX XX`	`+423 800 XX XX`	`011 423 800 XX XX`
Premium rate	90	`900 XX XX`	`+423 900 XX XX`	`011 423 900 XX XX`
Company number (UAN)	—	`870 XX XX`	`+423 870 XX XX`	`011 423 870 XX XX`

X stands for any digit. Source: libphonenumber metadata (phonenumbers 9.0.40), Google's open numbering data.

Checking a number from Liechtenstein? The phone number checker tells you if it is valid, mobile or landline, and gives its international format.

Dialing Tips

Remove the leading 0: When dialing internationally, drop the trunk prefix (0) that is used for domestic calls in Liechtenstein.
Use the + notation: From a US mobile phone, use +423 instead of 011 423.
Verify the number length: Numbers in Liechtenstein have 7 or 9 digits for mobiles and 7 for landlines after +423. If your call does not connect, check that no digit is missing or doubled.
Save contacts in international format: Always store phone numbers with the full +423 prefix so they work from any country.

Liechtenstein Phone Number FAQ

How many digits does a phone number in Liechtenstein have?

Phone numbers in Liechtenstein have 7 or 9 digits for mobiles and 7 for landlines after the country code +423.

What do mobile numbers in Liechtenstein start with?

Mobile numbers in Liechtenstein start with 64–66, 73–75 or 77–79, for example 66X XXX XXX.

How do I write a phone number from Liechtenstein in international format?

Start with +423, then the national number. For example, a mobile number written 66X XXX XXX at home becomes +423 66X XXX XXX. From a US landline, dial 011 423 66X XXX XXX.

What is the toll-free prefix in Liechtenstein?

Toll-free numbers in Liechtenstein start with 80, for example 800 XX XX. Many toll-free numbers can't be reached from abroad.

How do I call the US from Liechtenstein?

Dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX. From a mobile phone you can use + instead of 00: +1 XXX XXX XXXX.

Liechtenstein Quick Info

Country Code +423

ISO Code LI

Capital Vaduz

International Prefix 011 (from US)

Full Country Profile

Nearby Countries