Prefixes for countries with the initial U

• A
• B
• C
• D
• E
• F
• G
• H
• I
• J
• K
• L
• M
• N
• O
• P
• Q
• R
• S
• T
• U
• V
• W
• X
• Y
• Z

• U.S. Virgin Islands
• Uganda
• Ukraine
• United Arab Emirates
• United Kingdom
• United Kingdom
• United Kingdom
• United States
• United States
• United States
• United States
• United States Minor Outlying Islands
• Uruguay
• Uzbekistan