Lookup International Access Codes

To make an international call to Baltimore, Maryland from most landline phones and most mobile phones, you first need to dial the international access code for your originating country to secure an international line from your telephone carrier.

International access codes are also known as international direct dial codes or IDDs.

When using most international calling cards and VoIP services, you do not need to dial an international access code - but you should check with your specific service to determine dialing procedures.

Use the widget below to look up your country's international access code.

Once you know your IDD, then follow the Baltimore dialing instructions here to complete your call.

Lookup International Access Codes

You can lookup the international access code for your country using the widget below. Or you can check the country list here to see if your country and IDD are shown.

Find an International Access Code / IDD
Calling from...
Your IDD
Your IDD will print here


  • Insert your IDD at the maroon 'ddd' to create a complete international phone number for calling Baltimore.
    • For a Baltimore landline number: 'ddd 1 aaa nnn nnnn'
    • For a Baltimore mobile number: 'ddd 1 aaa nnn nnnn'
  • Some countries, e.g., Australia, France, Singapore, use more than one IDD to designate specific carriers, specific countries, or other purposes. Be sure to use the correct code for your carrier or calling plan.
  • A '~' symbol indicates a dialing pause. Dial any numbers before the '~', then wait for tone before continuing.
  • Dial only the numerical digits shown. Non-numeric characters are informational only.

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