Schema

PhonNumber

• https://en.wikipedia.org/wiki/National_conventions_for_writing_telephone_numbers

US 10 digits

^(\+\d{1,2}\s?)?\(?\d{3}\)?[\s.-]?\d{3}[\s.-]?\d{4}$

• https://stackoverflow.com/a/16699507/1870054
• https://regex101.com/r/j48BZs/2

中国

• Landlines
  • (0XXX) YYY YYYY
    • XXX ,2-3 位, trunks
    • YYYY YYYY, 7-8 位, subscriber/local number
• 手机号
  • 1WX YYYY ZZZZ
    • W 3-9
• Toll Free
  • 400 XXX XXXX
  • 800 XXXX XXXX
• Service numbers
  • 3-5 位