Liechtenstein phone number format
How do you format a Liechtenstein phone number?
Write a Liechtenstein phone number with the country code +423. A mobile looks like 660 234 567 inside Liechtenstein and +423 660 234 567 from abroad. Mobiles have 7 or 9 digits after the country code, and the E.164 form is +423660234567. A format check confirms the digits fit the numbering plan, not that the number is in service.
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Paste your Liechtenstein numbers (a mixed list is fine). They are counted here at once; the free checker then gives every number its E.164 form, country and line type, with a file to download.
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See the phone add-onLiechtenstein number format at a glance
| Country calling code | +423 |
|---|---|
| International prefix (calling out of Liechtenstein) | 00 |
| Trunk prefix (domestic dialling) | None |
| Mobile number length | 7 or 9 digits after +423 |
| Landline number length | 7 digits after +423 |
| Mobile vs landline from the digits | Yes, separate ranges |
In short: +423, 7 or 9 digits for a mobile. The checker below formats any Liechtenstein number free in your browser; it can't say whether a line is live. Bulk phone number validator · Pro + Phone plan
Example Liechtenstein phone numbers
These are the example numbers from Google’s libphonenumber data, the same numbering-plan data our validator uses, written three ways.
| Format | Mobile | Landline |
|---|---|---|
| National (inside Liechtenstein) | 660 234 567 | 234 56 78 |
| International | +423 660 234 567 | +423 234 56 78 |
| E.164 | +423660234567 | +4232345678 |
How to write a Liechtenstein number in E.164
- Remove spaces, dashes, dots and brackets so only digits are left.
- Liechtenstein has no trunk prefix, so keep every digit of the national number.
- Put +423 in front. The result has 7 or 9 digits after the country code for a mobile.
So 660 234 567 becomes +423660234567. E.164 is the format SMS gateways, dialers and most CRMs store; see the E.164 format explained for why.
Mobile or landline?
Liechtenstein allocates separate number ranges to mobiles and landlines, so a numbering-plan check reads the line type straight from the digits, for free. That type describes the range the number came from. It doesn’t prove the number is connected today.
Mobile, landline and special number ranges in Liechtenstein
A Liechtenstein mobile number starts with 645–649, 65, 660–668, 73, 742, 756, 77–79 after +423. Every valid number of each type below starts with one of the digit groups shown. A number that starts the right way can still be unassigned: the groups say what a range is for, not that a number is connected.
| Type | Starts with, after +423 | Digits | Example |
|---|---|---|---|
| Mobile | 645–649, 65, 660–668, 73, 742, 756, 77–79 | 7 or 9 | +423 660 234 567 |
| Landline (fixed line) | 20–23, 26, 29, 32–34, 37–39 | 7 | +423 234 56 78 |
| Toll-free | 8002, 8005, 809 | 7 or 9 | +423 800 22 22 |
| Premium rate | 9002, 9012, 9013, 9066 | 7 | +423 900 22 22 |
| Universal access (UAN) | 8702, 8708 | 7 | +423 870 28 12 |
| Voicemail access | 6974, 6975, 6977, 6978 | 9 | +423 69 786 1234 |
More on Liechtenstein’s free-to-call and charged ranges: toll-free and premium numbers in Liechtenstein.
Sources, checked 5 November 2026
- Ranges, lengths and examples: Google libphonenumber numbering-plan data (libphonenumber-js 1.13.15), the data our validator uses.
- Official plan: ITU-T E.164 national numbering plan for Liechtenstein. The regulator’s filing is the authority when the two disagree.
Validate a list of Liechtenstein numbers
Check a single number with the free phone number validator. For a whole file, upload the CSV to the verifier: every row gets a status, the E.164 number, the country and the line type, and emails in the same file get a live mailbox check. The Pro + Phone plan ($49.99 a month) adds 5,000 live carrier lookups a month for the real line type and current carrier.
Common questions
- What is the country code for Liechtenstein?
- The country calling code for Liechtenstein is +423. When you call Liechtenstein from abroad, dial your international prefix (or +) followed by 423 and the number.
- How many digits is a Liechtenstein phone number?
- A Liechtenstein mobile number has 7 or 9 digits after the country code +423, and a landline has 7.
- How do I write a Liechtenstein number in international format?
- Start with +423, then add the rest of the number. The mobile number 660 234 567 becomes +423 660 234 567, or +423660234567 in E.164, the form most CRMs and SMS tools expect.
- Can you tell if a Liechtenstein number is a mobile?
- Usually, yes. Liechtenstein numbers come from ranges allocated separately to mobiles and landlines, so a numbering-plan check reads the line type from the digits. It tells you what the range is for, not whether the number is in service.
- Does a valid format mean a Liechtenstein number is in service?
- No. A valid format means the digits fit a range Liechtenstein's numbering plan allocates. It cannot tell whether the number is connected today or who carries it, because numbers are reassigned and ported. A live carrier lookup reports the current carrier and line type, but even that does not prove someone answers.
- Can I check a list of Liechtenstein numbers for free?
- Yes. Paste them in the list tab above or upload a CSV to the bulk phone number validator: E.164, country, format status and numbering-plan line type are free for every row, with no account. Live carrier and line-type lookups come with Pro + Phone at $49.99/mo (5,000 a month).
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