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Reference material and safety playbooks, written in plain language and updated as networks and scam tactics change.
🇵🇭 Reference
Philippine mobile prefixes, explained
Globe, Smart, Sun and DITO prefixes, portability and why 0933 is a Sun number.
🇻🇳 ReferenceVietnam's 093 and the 10-digit numbering plan
MobiFone's 093 range, the 2018 conversion and every operator's prefixes.
SafetyHow to spot a scam text in 10 seconds
Seven red flags that catch most smishing — links, OTPs, prizes, jobs, deliveries.
RecoveryClicked a link or sent money? Do this now
The first-hour checklist, plus where to report in PH, VN and TW.
DevelopersE.164 for PH & VN numbers: a developer's guide
Normalising, validating and storing mobile numbers — with regex you can use.
BusinessVanity & “golden” numbers: what makes them valuable
Why 3333 endings sell at a premium, and how to choose a memorable business line.