Related Clues:

• Three-part fig
• Kind of no
• Nine digit no
• No. to call
• With 1 Down, big city in the 'Silicon Wadi'
• Aviv header
• Contacts-list abbr
• Word with Aviv
• Digital identifier
• 123-45-6789, on a sample doc
• ID first issued in 1936
• ID on a W-9 form
• Many a tax filer's need: Abbr
• Tax form fig
• ID that many memorize