2 ms·
Why is "222-222-2222" not a valid phone number?
by GFK_of_xmaspast 11y ago
Why is "222-222-2222" not a valid phone number?
- bdarnell 11y agoThe phone numbers library isn't just counting digits; it has a database of which area codes exist (as well as other lesser-known rules, depending on the country). This makes it more effective at filtering out invalid/fake phone numbers, but it does mean you need to stay on top of the latest version as its database changes over time.