This free Peruvian phone number checker shows whether a number is valid.
A Peruvian phone number checker tells you whether a number is real, which means it follows Peru's numbering rules and is assigned. Enter a +51 number above and 1Lookup's free checker returns valid or invalid in seconds, with the line type and country, checked against Peru's numbering plan.
Pick the country, then enter the number without the country code.
Free & rate-limited. No signup required to try.
- Country code
- +51
- Mobile numbers
- 9 digits after +51, starting 9
- Landlines
- 8 digits after +51, starting 1, 4, 5, 6, 7 or 8, such as +51Â 1Â XXXXXXX
- Written at home
- 912 345 678
- Written for apps and SMS
- +51912345678
- Dialed from the US
- 011 51 912 345 678
A Peruvian mobile number is +51 followed by 9 digits, and the first one is 9.
Written with the country code
- +51Country code
- 9Mobile start
- 12 345 6788 more digits
The +51 comes before the number and is dropped when you dial inside Peru.
A Peruvian phone number checker reads a number's format first and then checks it against Peru'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 912 345 678, or paste it with +51.
- Its format is checkedEach type of number has its own rules. A mobile needs 9 digits after +51 and starts with 9 at home.
- 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 Peru'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 Peruvian mobile number has 9 digits after +51 and starts with 9, so any other length is not a valid mobile.
These lengths come from the numbering data for Peru.
| Number type | Starts with at home | Digits after +51 | Written at home |
|---|---|---|---|
| Mobile | 9 | 9 | 912 345 678 |
| Landline | 1, 4, 5, 6, 7 or 8 | 8 | (01) XXXXXXX |
Three common mistakes make a Peruvian number fail the check, and each one is quick to fix.
Repeating +51 adds digits.
Write +51 912 345 678 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 +51. With 8 or 10 it cannot be a valid mobile, 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 Peru selected for a +51 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 Peruvian phone numbers.
How do I check if a Peruvian phone number is valid?
Enter the number in the box above with Peru 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 912 345 678, or in full as +51 912 345 678.
How many digits is a Peruvian phone number?
A mobile number has 9 digits after +51. A landline has 8 digits after +51, such as +51 1 XXXXXXX.
What does a Peruvian mobile number start with?
Mobile numbers start with 9 at home, which is 9 after +51.
How do I write a Peruvian number for an app or an SMS tool?
Use the E.164 form: a plus sign, 51, then the number and no spaces, such as +51912345678.
Does the Peruvian 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 Peruvian number is active?
No. Valid means the number is real, correctly written for Peru 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 Peruvian 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 Lima, Arequipa and Cusco?
The codes are 1 for Lima, 54 for Arequipa and 84 for Cusco. From abroad you dial +51 and then the code, so Lima is +51 1. The area code is part of the digits of a landline number.
You can check numbers from other countries on their own pages.
- +61Australian phone number checker
- +1Canadian phone number checker
- +44UK phone number checker
- +353Irish phone number checker
- +91Indian phone number checker
- +65Singapore phone number checker
- +234Nigerian phone number checker
- +64New Zealand phone number checker
- +60Malaysian phone number checker
- +66Thai phone number checker
- +63Philippine phone number checker
- +27South African phone number checker
- +254Kenyan phone number checker
- +233Ghanaian phone number checker
- +971UAE phone number checker
- +92Pakistani phone number checker
- +880Bangladeshi phone number checker
- +94Sri Lankan phone number checker
- +852Hong Kong phone number checker
- +256Ugandan phone number checker
- +255Tanzanian phone number checker
- +260Zambian phone number checker
- +356Maltese phone number checker
- +357Cypriot phone number checker
- +31Dutch phone number checker
- +49German phone number checker
- +62Indonesian phone number checker
- +966Saudi phone number checker
- +251Ethiopian phone number checker
- +962Jordanian phone number checker
- +52Mexican phone number checker
- +55Brazilian phone number checker
- +34Spanish phone number checker
- +33French phone number checker
- +39Italian phone number checker
- +81Japanese phone number checker
- +82South Korean phone number checker
- +84Vietnamese phone number checker
- +20Egyptian phone number checker
- +90Turkish phone number checker
- +972Israeli phone number checker
- +48Polish phone number checker
- +54Argentine phone number checker
- +57Colombian phone number checker
- +56Chilean phone number checker
- +32Belgian phone number checker
- +41Swiss phone number checker
- +46Swedish phone number checker
- +351Portuguese phone number checker
- +58Venezuelan phone number checker
- +593Ecuadorian phone number checker
- +502Guatemalan phone number checker
- +1Dominican phone number checker
- +591Bolivian phone number checker
- +598Uruguayan phone number checker
- +506Costa Rican phone number checker
- +507Panamanian phone number checker
These free tools answer the next question about a number.
- The +51 country code pageHow to dial Peru, 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.