National Telecommunications Commission(NTC)

Good day NTC!
Just by looking at a mobile phone number, how do we know if it is invalid (i.e., not working at all or a fake mobile number)?
For example, a number 0999-999-9999 is invalid (?) due to its formatting (repeated digits). A number of 0954-645-98543 is invalid because it is 12 digits. A number of 0912-345-6789 is invalid (?) because it is a sequential.
Without using an OTP, how do we ascertain a mobile number's validity just by its format?
Is there a documented criteria for making phone numbers?
Thanks for the response.

August 29, 2023

Dear Citizen,

Greetings!

Thank you for your request dated Aug 25, 2023 under Executive Order No. 2 (s. 2016) on Freedom of Information in the Executive Branch.

Your request

You asked for Criteria/ Format of Valid Mobile Phone Numbers.

Response to your request

While our aim is to provide information whenever possible, in this instance this Office does not have the information you have requested. 

Your right to request a review

If you are unhappy with this response to your FOI request, you may ask us to carry out an internal review of the response by writing to:

THE COMMISSIONER
NTC Bldg., East Triangle, Diliman, Q.C. 

Your review request should explain why you are dissatisfied with this response, and should be made within 15 calendar days from the date when you received this letter. We will complete the review and tell you the result within 30 calendar days from the date when we receive your review request.

If you are not satisfied with the result of the review, you then have the right to appeal to the Office of the President under Administrative Order No. 22 (s. 2011).

Thank you.

Respectfully,

Divina Daquioag
FOI Officer