Carrier, Line Type, and International Number Formats
How country codes, mobile or landline types, and number formatting affect research.
A correct country code brings a local number closer to E.164 format and reduces false matches.
Essential checklist
- Do not repeat a local trunk prefix after the country code.
- Number portability means a prefix may not show the current carrier.
- Virtual and fixed lines can have different risk contexts.
Remember the limits
Phone number research provides supporting context; it is not definitive proof of identity, safety, or intent.