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  • #1 State

    Telephone Area Codes

    Maryland Telephone Area Code Boundaries represents the telephone area codes for the State of Maryland. They are also known as Numbering Plan Areas (NPA). The Numbering Plan Areas reflect current...

    Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:49 PM
  • #2 State

    Telephone Area Codes

    Maryland Telephone Area Code Boundaries represents the telephone area codes for the State of Maryland. They are also known as Numbering Plan Areas (NPA). The Numbering Plan Areas reflect current...

    Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 06:50 PM

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