+1-301-(2820000...2829999), Layhill, Maryland

• For trunk calls: 0 301 2820000 (Trunk Code + National Destination Code + Subscriber Number)
• For international calls: 011 1 301 2820000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number)

2820000 ~ 2829999 (จำนวน: 10,000)

Example:

• +1-301-2820000 / 0111-301-2820000 (1301-2820000 / 1-301-2820000)
• +1-301-2820001 / 0111-301-2820001 (1301-2820001 / 1-301-2820001)
• +1-301-2820002 / 0111-301-2820002 (1301-2820002 / 1-301-2820002)
• +1-301-2820003 / 0111-301-2820003 (1301-2820003 / 1-301-2820003)
• +1-301-2820004 / 0111-301-2820004 (1301-2820004 / 1-301-2820004)
• ...
• +1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx)
• ...
• +1-301-2829995 / 0111-301-2829995 (1301-2829995 / 1-301-2829995)
• +1-301-2829996 / 0111-301-2829996 (1301-2829996 / 1-301-2829996)
• +1-301-2829997 / 0111-301-2829997 (1301-2829997 / 1-301-2829997)
• +1-301-2829998 / 0111-301-2829998 (1301-2829998 / 1-301-2829998)
• +1-301-2829999 / 0111-301-2829999 (1301-2829999 / 1-301-2829999)