Have you seen a number starting with 0991 and wondered, “0991 what network?” In the Philippines, mobile prefixes play a crucial role in identifying the original telecom provider of a number. Knowing the network helps you pick the right promos, manage costs, and ensure device compatibility. This guide covers everything you need to know about the 0991 prefix and which network it belongs to.
Understanding the Mobile Prefix 0991
What Is a Mobile Prefix?
A mobile prefix is the first four or five digits of an 11-digit mobile phone number in the Philippines. For example, in the number 0991-123-4567, the prefix is 0991. These prefixes help identify which telecom company initially issued the number.
0991 Is What Network?
Official Network Assignment
The 0991 prefix is officially assigned to DITO Telecommunity, the newest major telecommunications provider in the Philippines.
| Prefix | Network Provider | Type |
| 0991 | DITO Telecommunity | Prepaid and Postpaid |
The 0991 prefix is used for both DITO prepaid and postpaid subscribers.
Why It’s Important to Know 0991’s Network
Maximize Promo and Plan Benefits
Recognizing 0991 as a DITO number allows you to:
- Select DITO-to-DITO call and text promos for cheaper rates
- Avoid unexpected inter-network call charges
- Take advantage of DITO-exclusive promos, especially data-heavy bundles
Compatibility with Devices and Services
Since 0991 is a DITO Telecommunity number, this means:
- SIM cards must be inserted into DITO-compatible or unlocked phones
- Subscribers can enjoy DITO’s 4G and 5G network speeds
- Access to DITO’s VoLTE (Voice over LTE) services for clearer call quality
Mobile Number Portability (MNP)
Thanks to Mobile Number Portability (MNP) in the Philippines:
- 0991 users can switch to another network without changing their number
- If ported out, the number will still appear as 0991 but will operate under a new provider
- Some DITO-exclusive features may no longer be available after porting
Prepaid vs Postpaid Usage of 0991
Both Prepaid and Postpaid
Unlike some older prefixes linked specifically to either prepaid or postpaid, 0991 is used for both:
- DITO prepaid SIM users enjoy affordable data promos and call bundles
- DITO postpaid subscribers access mobile plans with unlimited data and higher speeds
Growing Usage
As DITO continues to expand nationwide, the 0991 prefix is becoming increasingly common among new mobile subscribers.
Related DITO Prefixes
Here’s a look at other prefixes associated with DITO Telecommunity:
| Prefix | Network |
| 0991 | DITO Telecommunity |
| 0992 | DITO Telecommunity |
| 0993 | DITO Telecommunity |
| 0994 | DITO Telecommunity |
These prefixes are all relatively new compared to older Globe, Smart, and Sun prefixes.
FAQs
0991 What network in the Philippines?
0991 belongs to DITO Telecommunity and is used for both prepaid and postpaid subscribers.
Is 0991 a prepaid or postpaid number?
0991 can be assigned to both prepaid and postpaid subscribers, depending on the user’s plan with DITO Telecommunity.
Will a 0991 SIM card work on any phone?
A 0991 SIM card will work on DITO-compatible phones or any device that is open-line (unlocked) and supports DITO’s network bands.
Can a 0991 number be transferred to another network?
Yes. Mobile Number Portability (MNP) allows 0991 users to switch to another network while keeping their existing number.
Is 0991 the same as 0992 or 0993?
No, but they are all DITO Telecommunity prefixes. 0991, 0992, and 0993 are different batches of numbers assigned by DITO for new subscribers.