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This free Kenyan phone number checker shows whether a number is valid.

A Kenyan phone number checker tells you whether a number is real, which means it follows Kenya's numbering rules and is assigned. Enter a +254 number above and 1Lookup's free checker returns valid or invalid in seconds, with the line type and country, checked against Kenya's numbering plan.

Country code
+254
Mobile numbers
9 digits after +254, or 10 written at home, starting 01 or 07
Landlines
7 to 9 digits after +254, starting 02, 04, 05 or 06, such as +254 2X XXXXXXX
Written at home
0712 123456
Written for apps and SMS
+254712123456
Dialed from the US
011 254 712 123456

A Kenyan mobile number is +254 followed by 9 digits, and the first one is 1 or 7.

How a Kenyan mobile number is built

Written with the country code

  1. +254Country code
  2. 7Mobile start
  3. 12 1234568 more digits

Written at home

  1. 0Replaces +254
  2. 7Mobile start
  3. 12 1234568 more digits

The +254 and the 0 do the same job, so a number is never written with both.

A Kenyan phone number checker reads a number's format first and then checks it against Kenya'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.

What one Kenyan phone number check does
  1. You enter the numberType it the way it is written at home, such as 0712 123456, or paste it with +254.
  2. Its format is checkedEach type of number has its own rules. A mobile needs 9 digits after +254 and starts with 01 or 07 at home.
  3. 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 Kenya's.Nothing is sent to the number, so it never rings and its owner is never told.
  4. You see valid or invalidWith the line type and country in a few seconds, and the carrier or network where one is listed.

A Kenyan mobile number has 9 digits after +254 and starts with 01 or 07, so any other length is not a valid mobile.

These lengths come from the numbering data for Kenya. A mobile number has 10 digits when it is written at home with its 0.

Number typeStarts with at homeDigits after +254Written at home
Mobile01 or 0790712 123456
Landline02, 04, 05 or 067 to 902X XXXXXXX

Three common mistakes make a Kenyan number fail the check, and each one is quick to fix.

  1. Keeping the 0 after +254 adds a digit.

    The 0 is only for dialing inside Kenya, so +254 0712 123456 is wrong. Drop the 0 and write +254 712 123456.

  2. Typing too few or too many digits makes a number invalid.

    A mobile number has 9 digits after +254. With 8 or 10 it cannot be a valid mobile, so look for a missing or doubled digit.

  3. 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 Kenya selected for a +254 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 Kenyan phone numbers.

How do I check if a Kenyan phone number is valid?

Enter the number in the box above with Kenya 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 0712 123456, or in full as +254 712 123456.

How many digits is a Kenyan phone number?

A mobile number has 9 digits after +254, or 10 written at home. A landline has 7 to 9 digits after +254, such as +254 2X XXXXXXX.

What does a Kenyan mobile number start with?

Mobile numbers start with 01 or 07 at home, which is 1 or 7 after +254.

How do I write a Kenyan number for an app or an SMS tool?

Use the E.164 form: a plus sign, 254, then the number without its leading 0 and no spaces, such as +254712123456.

Does the Kenyan 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 Kenyan number is active?

No. Valid means the number is real, correctly written for Kenya 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 Kenyan 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 Nairobi, Mombasa and Kisumu?

At home the codes are 020 for Nairobi, 041 for Mombasa and 057 for Kisumu. From abroad the 0 is dropped, so Nairobi is +254 20. 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.

Sources: Google's libphonenumber numbering data for lengths, mobile starts and landline starts, as of September 24, 2026; the ITU list of country codes.

You can check a whole list of numbers with a 7-day free trial.

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.