0 added
0 removed
Original
2026-01-01
Modified
2026-03-10
1
<p><strong>RFC3966</strong>is a standardized format for<a>telephone numbers</a>, represented as a Uniform Resource Identifier (URI) with the prefix “tel:” followed by a unique digit sequence. For example:</p>
1
<p><strong>RFC3966</strong>is a standardized format for<a>telephone numbers</a>, represented as a Uniform Resource Identifier (URI) with the prefix “tel:” followed by a unique digit sequence. For example:</p>
2
<ul><li>tel: 2345678901</li>
2
<ul><li>tel: 2345678901</li>
3
<li>tel: +12345678900</li>
3
<li>tel: +12345678900</li>
4
</ul><p>The RFC3966 format has a standardized structure and contains the following components:</p>
4
</ul><p>The RFC3966 format has a standardized structure and contains the following components:</p>
5
<ol><li><strong>“tel:”</strong>a globally unique identifier that specifies a telephone number</li>
5
<ol><li><strong>“tel:”</strong>a globally unique identifier that specifies a telephone number</li>
6
<li><strong>Country code:</strong>a numeric sequence that represents a specific country</li>
6
<li><strong>Country code:</strong>a numeric sequence that represents a specific country</li>
7
<li><strong><a>Numbering Plan Area</a>(NPA) code:</strong>a 3-digit area code.</li>
7
<li><strong><a>Numbering Plan Area</a>(NPA) code:</strong>a 3-digit area code.</li>
8
<li><strong>Phone number:</strong>someone’s local phone number</li>
8
<li><strong>Phone number:</strong>someone’s local phone number</li>
9
</ol><h2>Why is RFC3966 important for SMS marketing?</h2>
9
</ol><h2>Why is RFC3966 important for SMS marketing?</h2>
10
<p>RFC3966 is designed to work seamlessly with<a>mobile devices</a>using their built-in tap-to-call functionality. It makes communication between<a>ecommerce brands</a>and<a>their subscribers</a>easier, but also helps with global compatibility-RFC3966 supports both local and international numbers, which facilitates sending SMS messages to a global audience without any manual adjustments.</p>
10
<p>RFC3966 is designed to work seamlessly with<a>mobile devices</a>using their built-in tap-to-call functionality. It makes communication between<a>ecommerce brands</a>and<a>their subscribers</a>easier, but also helps with global compatibility-RFC3966 supports both local and international numbers, which facilitates sending SMS messages to a global audience without any manual adjustments.</p>
11
<p>Ready to grow your<a>SMS list</a>? With Klaviyo, you can easily<a>create sign-up forms</a>to collect phone numbers and start sending messages today.</p>
11
<p>Ready to grow your<a>SMS list</a>? With Klaviyo, you can easily<a>create sign-up forms</a>to collect phone numbers and start sending messages today.</p>
12
<p><a>Sign up for Klaviyo</a>and reach your audience no matter where they live.</p>
12
<p><a>Sign up for Klaviyo</a>and reach your audience no matter where they live.</p>
13
<h3>Additional resources</h3>
13
<h3>Additional resources</h3>
14
<ul><li><a>What is a custom keyword</a>?</li>
14
<ul><li><a>What is a custom keyword</a>?</li>
15
<li><a>What is failed to deliver SMS</a>?</li>
15
<li><a>What is failed to deliver SMS</a>?</li>
16
<li><a>What is a subscribe keyword</a>?</li>
16
<li><a>What is a subscribe keyword</a>?</li>
17
<li><a>What is unsubscribed from SMS</a>?</li>
17
<li><a>What is unsubscribed from SMS</a>?</li>
18
</ul>
18
</ul>