VOX-TEL| ROUTE REQUIREMENT (CHINA )(RUSSIA )( KENYA )(NIGEIA)(ZIMBABWE)(EGYPT) TDM & NCLI CC

Useful thread for anyone handling wholesale route requests. Before you commit TDM/NCLI routes for a destination list, it pays to sanity-check the numbers you will actually route against:

1. Syntax / E.164 format - country code, length, no stray characters. Cheap and catches obvious junk, but it only proves the string is well-formed.

2. Line type - mobile vs landline vs VoIP. Route economics and downstream acceptance differ sharply by line type; some destinations reject whole classes of numbers at the terminating side.

3. Port / routing state - numbers get ported and carrier routing tables go stale. A number that was on one operator six months ago may be on another today, which changes both cost and completion.

4. App / platform registration - for customers who need WhatsApp, Telegram, or RCS delivery, whether the number is actually registered on that channel is a separate question from whether it routes on the PSTN.

The usual failure mode is treating all of these as one "valid/invalid" flag. If you're vetting lists before pricing or committing routes, we run exactly these labeled checks (syntax, carrier/line-type, porting, app-registration signals) in bulk or via API, with a free preflight on sample lists before any spend: https://phoneveriflo.com

Happy to compare notes on how others vet destination lists before committing routes.