This free Indonesian phone number checker shows whether a number is valid.
An Indonesian phone number checker tells you whether a number is real, which means it follows Indonesia's numbering rules and is assigned. Enter a +62 number above and 1Lookup's free checker returns valid or invalid in seconds, with the line type and country, checked against Indonesia's numbering plan.
Pick the country, then enter the number without the country code.
Free & rate-limited. No signup required to try.
- Country code
- +62
- Mobile numbers
- 9 to 12 digits after +62, starting 08
- Landlines
- 7 to 11 digits after +62, starting 02, 03, 04, 05, 06, 07 or 09, such as +62Â 21Â XXXXXXX
- Written at home
- 0812-345-678
- Written for apps and SMS
- +62812345678
- Dialed from the US
- 011 62 812 345 678
An Indonesian mobile number is +62 followed by 9 to 12 digits, and the first one is 8.
Written with the country code
- +62Country code
- 8Mobile start
- 12 345 6788 more digits
Written at home
- 0Replaces +62
- 8Mobile start
- 12 345 6788 more digits
The +62 and the 0 do the same job, so a number is never written with both.
An Indonesian phone number checker reads a number's format first and then checks it against Indonesia'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 0812-345-678, or paste it with +62.
- Its format is checkedEach type of number has its own rules. A mobile needs 9 to 12 digits after +62 and starts with 08 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 Indonesia'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.
An Indonesian mobile number has 9 to 12 digits after +62 and starts with 08, so any other length is not a valid mobile.
These lengths come from the numbering data for Indonesia.
| Number type | Starts with at home | Digits after +62 | Written at home |
|---|---|---|---|
| Mobile | 08 | 9 to 12 | 0812-345-678 |
| Landline | 02, 03, 04, 05, 06, 07 or 09 | 7 to 11 | (021) XXXXXXX |
Three common mistakes make an Indonesian number fail the check, and each one is quick to fix.
Keeping the 0 after +62 adds a digit.
The 0 is only for dialing inside Indonesia, so +62 0812 345 678 is wrong. Drop the 0 and write +62 812 345 678.
Typing too few or too many digits makes a number invalid.
A mobile number has 9 to 12 digits after +62. With fewer than 9 or more than 12 it cannot be a valid mobile, and inside that range the first digits decide how many are needed, 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 Indonesia selected for a +62 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 Indonesian phone numbers.
How do I check if an Indonesian phone number is valid?
Enter the number in the box above with Indonesia 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 0812-345-678, or in full as +62 812 345 678.
How many digits is an Indonesian phone number?
A mobile number has 9 to 12 digits after +62. A landline has 7 to 11 digits after +62, such as +62 21 XXXXXXX.
What does an Indonesian mobile number start with?
Mobile numbers start with 08 at home, which is 8 after +62. The next digit is 1, 2, 3, 5, 6, 7, 8 or 9.
How do I write an Indonesian number for an app or an SMS tool?
Use the E.164 form: a plus sign, 62, then the number without its leading 0 and no spaces, such as +62812345678.
Does the Indonesian 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 Indonesian number is active?
No. Valid means the number is real, correctly written for Indonesia 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 Indonesian 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 Jakarta, Bandung and Surabaya?
At home the codes are 021 for Jakarta, 022 for Bandung and 031 for Surabaya. From abroad the 0 is dropped, so Jakarta is +62 21. The area code is part of a landline's digits, and a mobile number has none.
You can check numbers from other countries on their own pages.
- +61Australian phone number checkerCheck numbers from Australia
- +1Canadian phone number checkerCheck numbers from Canada
- +44UK phone number checkerCheck numbers from the UK
- +353Irish phone number checkerCheck numbers from Ireland
- +91Indian phone number checkerCheck numbers from India
- +65Singapore phone number checkerCheck numbers from Singapore
- +234Nigerian phone number checkerCheck numbers from Nigeria
- +64New Zealand phone number checkerCheck numbers from New Zealand
- +60Malaysian phone number checkerCheck numbers from Malaysia
- +66Thai phone number checkerCheck numbers from Thailand
- +63Philippine phone number checkerCheck numbers from the Philippines
- +27South African phone number checkerCheck numbers from South Africa
- +254Kenyan phone number checkerCheck numbers from Kenya
- +233Ghanaian phone number checkerCheck numbers from Ghana
- +971UAE phone number checkerCheck numbers from the UAE
- +92Pakistani phone number checkerCheck numbers from Pakistan
- +880Bangladeshi phone number checkerCheck numbers from Bangladesh
- +94Sri Lankan phone number checkerCheck numbers from Sri Lanka
- +852Hong Kong phone number checkerCheck numbers from Hong Kong
- +256Ugandan phone number checkerCheck numbers from Uganda
- +255Tanzanian phone number checkerCheck numbers from Tanzania
- +260Zambian phone number checkerCheck numbers from Zambia
- +356Maltese phone number checkerCheck numbers from Malta
- +357Cypriot phone number checkerCheck numbers from Cyprus
- +31Dutch phone number checkerCheck numbers from the Netherlands
- +49German phone number checkerCheck numbers from Germany
- +966Saudi phone number checkerCheck numbers from Saudi Arabia
- +251Ethiopian phone number checkerCheck numbers from Ethiopia
- +962Jordanian phone number checkerCheck numbers from Jordan
These free tools answer the next question about a number.
- The +62 country code pageHow to dial Indonesia, 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.