How to Screen Overseas Numbers: From the Global SIM Real-Name Shutdown Wave to Country-Specific, Ecosystem-Specific Precise Screening

With over 155 countries enforcing mandatory SIM real-name registration and mass number shutdowns, plus a highly fragmented regional social and communication ecosystem, broad-brush overseas number screening can no longer meet the needs of overseas customer acquisition. This article combines national telecom regulatory trends and mainstream channel distribution to break down the complete implementation path: local E.164 format deduplication, country-specific baseline risk control, and multi-platform layered verification.