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Original
2026-01-01
Modified
2026-03-10
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<p>A<strong>Numbering Plan Area</strong>(NPA), also known as an area code, is typically a 3-digit code that identifies a telephone service region within a country. NPAs are a key component of the<a>North American Numbering Plan</a>(NANP), a standardized telephone numbering system used across North America, the Caribbean, and some Pacific territories.</p>
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<p>A<strong>Numbering Plan Area</strong>(NPA), also known as an area code, is typically a 3-digit code that identifies a telephone service region within a country. NPAs are a key component of the<a>North American Numbering Plan</a>(NANP), a standardized telephone numbering system used across North America, the Caribbean, and some Pacific territories.</p>
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<p>For mobile marketers, NPA codes can help identify the location of<a>subscribers</a>or potential customers so that they can<a>segment</a>their<a>target audience</a>to deliver:</p>
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<p>For mobile marketers, NPA codes can help identify the location of<a>subscribers</a>or potential customers so that they can<a>segment</a>their<a>target audience</a>to deliver:</p>
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<ul><li>Geotargeted messages</li>
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<ul><li>Geotargeted messages</li>
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<li>Event notifications</li>
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<li>Event notifications</li>
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<li>Personalized in-store offers</li>
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<li>Personalized in-store offers</li>
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<li>Other geotargeted messages</li>
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<li>Other geotargeted messages</li>
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</ul><h2>Types of NPA codes</h2>
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</ul><h2>Types of NPA codes</h2>
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<p>NPA codes can have several formats depending on where and how they are used:</p>
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<p>NPA codes can have several formats depending on where and how they are used:</p>
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<h3>1. Fixed length NPA code</h3>
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<h3>1. Fixed length NPA code</h3>
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<p>Some telephone numbering plans specify NPA codes with the same length. For instance, North American NPA codes have a fixed 3-digit length.</p>
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<p>Some telephone numbering plans specify NPA codes with the same length. For instance, North American NPA codes have a fixed 3-digit length.</p>
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<h3>2. Variable length NPA codes</h3>
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<h3>2. Variable length NPA codes</h3>
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<p>Several countries, such as the UK, Germany, and Japan, use NPA codes that vary in length. These codes can span anywhere between 2 to 5 digits.</p>
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<p>Several countries, such as the UK, Germany, and Japan, use NPA codes that vary in length. These codes can span anywhere between 2 to 5 digits.</p>
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<h3>3. Easily recognizable codes</h3>
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<h3>3. Easily recognizable codes</h3>
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<p>Easily recognizable codes (ERCs) are 3-digit NANP NPA codes where the last 2 digits are identical to make them easier to remember, such as 866 for toll-free service.</p>
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<p>Easily recognizable codes (ERCs) are 3-digit NANP NPA codes where the last 2 digits are identical to make them easier to remember, such as 866 for toll-free service.</p>
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<h2>What are NPA codes used for?</h2>
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<h2>What are NPA codes used for?</h2>
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<p>NPA codes stand for one of two things:</p>
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<p>NPA codes stand for one of two things:</p>
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<ul><li><strong>Geographic location</strong>: The general role of the NPA is to divide a country’s numbering system into smaller geographic regions by assigning a unique number to each area within that country.</li>
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<ul><li><strong>Geographic location</strong>: The general role of the NPA is to divide a country’s numbering system into smaller geographic regions by assigning a unique number to each area within that country.</li>
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<li><strong><a>Toll-free numbers</a>:</strong>In NANP, toll-free numbers start with the 8XX prefix and include 800, 833, 844, 855, 866, 877, and 888. Area codes 822, 880 through 887, and 889 are reserved for future use.</li>
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<li><strong><a>Toll-free numbers</a>:</strong>In NANP, toll-free numbers start with the 8XX prefix and include 800, 833, 844, 855, 866, 877, and 888. Area codes 822, 880 through 887, and 889 are reserved for future use.</li>
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</ul><p>Ready to start geotargeting SMS subscribers based on area code?<a>Sign up for Klaviyo</a>and start sending targeted SMS messages today.</p>
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</ul><p>Ready to start geotargeting SMS subscribers based on area code?<a>Sign up for Klaviyo</a>and start sending targeted SMS messages today.</p>
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