Why Do Some Mobile Prefixes in the Philippines Work on Multiple Networks?

I’ve noticed that in the Philippines, some mobile number prefixes seem to work on multiple networks. For example, a number starting with a specific prefix might be originally from one telecom provider but is now active on another. This can make it confusing to determine which network a number belongs to.

Is this due to mobile number portability (MNP) or are there other reasons why prefixes aren’t always tied to a single telecom provider? How do networks in the Philippines handle this, and is there an easy way to check the correct network for a number?"*

  • This is an interesting question! In the Philippines, the reason why some mobile prefixes seem to work on multiple networks is due to Mobile Number Portability (MNP). This allows users to switch from one network to another without changing their number, making it difficult to determine the original network based on prefix alone.

    Another reason is that telecom providers sometimes lease or acquire number ranges, leading to cases where a prefix once exclusive to a specific network is now shared or reassigned.

    For those who frequently need to check which network a number belongs to, there are online tools available that can help. One such website is Whatnetwork, which provides a quick way to determine the correct network for any mobile number in the Philippines.

    Hope this helps! Has anyone else noticed prefixes that seem to belong to more than one carrier?