HLR (Home Location Register)
HLR is an abbreviation of Home Location Register. This is part of the telecommunication infrastructure used in mobile networks to store information about subscribers and it supports connection pooling.
As you are logged to platform, just pick More functions and Check number - HLR tab. Simply put the number you want to check in text field.
After a few seconds you'll get information about checked number's network and if number has been ported before.
If you want to check more numbers, you can simply upload them to platform from .csv file.
In this case, process can take slightly longer, so there is availability to provide an email address on which the alert will be sent to, when the report will be downloadable in customer panel.