Related Clues:

• The "O" in NATO (Abbr.)
• Amazon extension?
• Alternative to .com or .net
• Delivery aid
• Net alternative
• Edu cousin
• E-mail address suffix
• Ending of some URLs
• URL tag
• Web address ending, perhaps
• Internet address ending, typically
• U.R.L. ender
• End of some Web addresses
• Web-address piece
• Pt. of NATO