This free Polish phone number checker shows whether a number is valid.
A Polish phone number checker tells you whether a number is real, which means it follows Poland's numbering rules and is assigned. Enter a +48 number above and 1Lookup's free checker returns valid or invalid in seconds, with the line type and country, checked against Poland's numbering plan.
Pick the country, then enter the number without the country code.
Free & rate-limited. No signup required to try.
- Country code
- +48
- Mobile numbers
- 9 digits after +48
- Landlines
- 7 or 9 digits after +48, such as +48聽12聽XXX聽XX聽XX
- Written at home
- 512 345 678
- Written for apps and SMS
- +48512345678
- Dialed from the US
- 011 48 512 345 678
A Polish mobile number is +48 followed by 9 digits, and a landline has 7 or 9 digits.
Written with the country code
- +48Country code
- 5First digit
- 12 345 6788 more digits
The +48 comes before the number and is dropped when you dial inside Poland.
A Polish phone number checker reads a number's format first and then checks it against Poland's numbering plan.
This is the path one check takes. A number can be written correctly and still not be assigned to anyone, so the format check alone is not the answer.
- You enter the numberType it the way it is written at home, such as 512 345 678, or paste it with +48.
- Its format is checkedEach type of number has its own rules. A mobile needs 9 digits after +48 and a landline needs 7 or 9 digits.
- It is checked against the numbering planNumbers outside the US and Canada are checked against the numbering plan of their country, which for this page is Poland's.Nothing is sent to the number, so it never rings and its owner is never told.
- You see valid or invalidWith the line type and country in a few seconds, and the carrier or network where one is listed.
A Polish mobile number has 9 digits after +48 and a landline has 7 or 9 digits, and neither the length nor the first digit alone always shows which one it is.
These lengths come from the numbering data for Poland. Mobile and landline numbers can start with the same digit, so the first digit alone does not give the type, and the line type in the result does.
| Number type | Digits after +48 | Written at home |
|---|---|---|
| Mobile | 9 | 512 345 678 |
| Landline | 7 or 9 | 12 XXX XX XX |
Three common mistakes make a Polish number fail the check, and each one is quick to fix.
Repeating +48 adds digits.
Write +48 512 345 678 once, with the country code at the front.
Typing too few or too many digits makes a number invalid.
A mobile number has 9 digits after +48 and a landline has 7 or 9 digits. With fewer than 7 or more than 9 a number cannot be valid, so look for a missing or doubled digit.
Leaving the wrong country selected changes how the number is read.
The checker reads a number by the rules of the country selected above, so keep Poland selected for a +48 number. Paste a number with its + and country code and the country is read from the number itself.
These are the questions people ask most about checking Polish phone numbers.
How do I check if a Polish phone number is valid?
Enter the number in the box above with Poland selected. The free checker returns valid or invalid in seconds, with the line type and country. Type it the way it is written at home, such as 512 345 678, or in full as +48 512 345 678.
How many digits is a Polish phone number?
A mobile number has 9 digits after +48. A landline has 7 or 9 digits after +48, such as +48 12 XXX XX XX.
Can I tell a Polish mobile number from a landline by its digits?
Not by the first digit alone, because mobile and landline numbers can start with the same digit. A mobile has 9 digits after +48 and a landline has 7 or 9 digits, so some lengths fit both. The line type in the result gives the type.
How do I write a Polish number for an app or an SMS tool?
Use the E.164 form: a plus sign, 48, then the number and no spaces, such as +48512345678.
Does the Polish phone number checker show the carrier?
It shows the carrier or network where one is listed. Numbers outside the US and Canada are checked against the numbering plan of their country rather than live carrier data, so some come back with no carrier name.
Does valid mean the Polish number is active?
No. Valid means the number is real, correctly written for Poland and assigned. Whether a line is switched on and reachable right now is a different question, and the free HLR lookup answers it.
Can I check a whole list of Polish phone numbers?
Yes. This free tool checks one number at a time. A 7-day free trial opens CSV upload and the API, at 1 credit a number.
Does the person know I checked their number?
No. The check reads records only. No call or text goes to the number, so its owner is never told.
What are the landline area codes of Warsaw, Krak贸w and Gda艅sk?
The codes are 22 for Warsaw, 12 for Krak贸w and 58 for Gda艅sk. From abroad you dial +48 and then the code, so Warsaw is +48 22. The area code is part of the digits of a landline number.
You can check numbers from other countries on their own pages.
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- +1Canadian phone number checker
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These free tools answer the next question about a number.
- The +48 country code pageHow to dial Poland, the time there now and the landline places.
- HLR lookupCheck whether a mobile number is switched on and reachable right now.
- Line type lookupSee whether a number is a mobile, a landline or VoIP.
- Carrier lookupFind the carrier or network behind a number.
- Phone validator for any countryThe same check with the country picker open to every country.
- Phone validation APIRun the same check from your own software, one request per number.
Sources: Google's libphonenumber numbering data for lengths, mobile starts and landline starts, as of September 24, 2026; the ITU list of country codes.