Ported (transferred) by users who switch providers but keep their number.
Due to this continuous churn, any static "list" would be outdated almost immediately.
Security and Misuse: Such lists could be easily exploited for spamming, telemarketing, phishing scams, or other illegal activities.
How to Legally and Ethically Acquire a sri lanka phone number list Cell Phone Number:
If you are looking to get a new cell phone number, whether in Bangladesh or elsewhere, you must do so through a legitimate telecommunications service provider.
Through a Mobile Network Operator (MNO):
This is the most common way. You purchase a SIM card (or eSIM) and sign up for a mobile plan (prepaid or postpaid). The operator will assign you a number from their available pool.
You usually visit a retail store, provide identification (like your NID in Bangladesh), and choose a package. They will then assign you a number. You might be able to choose from a small, dynamically generated list of numbers they have readily available, but not a comprehensive public list.
Through a Voice over IP (VoIP) Service / Virtual Phone Number Provider.