diff --git a/src/ReactTelephoneInput.js b/src/ReactTelephoneInput.js
index 64ec4184..ec0c7371 100644
--- a/src/ReactTelephoneInput.js
+++ b/src/ReactTelephoneInput.js
@@ -232,7 +232,7 @@ export class ReactTelephoneInput extends Component {
         newSelectedCountry = this.guessSelectedCountry(inputNumber.substring(0, 6))
         freezeSelection = false
       }
-      formattedNumber = formatNumber(inputNumber, newSelectedCountry.format, this.props.autoFormat)
+      formattedNumber = formatNumber(inputNumber, newSelectedCountry.format, this.props.autoFormat, this.props.numberLength)
     }
 
     let caretPosition = event.target.selectionStart
@@ -290,7 +290,8 @@ export class ReactTelephoneInput extends Component {
       const formattedNumber = formatNumber(
         newNumber,
         nextSelectedCountry.format,
-        this.props.autoFormat
+        this.props.autoFormat,
+        this.props.numberLength
       )
 
       this.setState(
@@ -345,7 +346,8 @@ export class ReactTelephoneInput extends Component {
     const formattedNumber = formatNumber(
       inputNumber.replace(/\D/g, ''),
       selectedCountryGuess ? selectedCountryGuess.format : null,
-      this.props.autoFormat
+      this.props.autoFormat,
+      this.props.numberLength
     )
 
     return {
@@ -623,6 +625,7 @@ ReactTelephoneInput.propTypes = {
   value: PropTypes.string,
   initialValue: PropTypes.string,
   autoFormat: PropTypes.bool,
+  numberLength: PropTypes.number,
   defaultCountry: PropTypes.string,
   isValid: PropTypes.func,
   onlyCountries: PropTypes.arrayOf(PropTypes.object),
diff --git a/src/format_number.js b/src/format_number.js
index 91da5b04..0a8d23a0 100644
--- a/src/format_number.js
+++ b/src/format_number.js
@@ -2,7 +2,7 @@ import R from 'cramda'
 
 const { first, tail } = R
 
-function formatNumber(text, pattern, autoFormat) {
+function formatNumber(text, pattern, autoFormat, length) {
   if (!text || text.length === 0) {
     return '+'
   }
@@ -13,6 +13,14 @@ function formatNumber(text, pattern, autoFormat) {
     return `+${text}`
   }
 
+  if (length === null) {
+    length = text.length;
+  }
+
+  if (text.length > length) {
+    text = text.substring(0, length-1);
+  }
+
   const formattedObject = pattern.split('').reduce(
     (acc, character) => {
       if (acc.remainingText.length === 0) {