CODEWITHSUNDEEP
twiliotwilio-phptwilio-click-to-call
softfx
softfx

Reputation: 39

phone number validation using twilio

I want to implement phone number validation which checks whether phone number exist or does not exist.

I did this

Imports Twilio.Lookups

If Not File.Exists("list.txt") Then
         MsgBox("insert phone numbers to list.txt")

         Return
     Else
         Dim list() As String = File.ReadAllLines("list.txt")
         ListBox1.Items.AddRange(list)



     End If

     Dim accountSid As String = "AC862c52baff7d8ef72c9e4c04f828fa03"
     Dim authToken As String = "xxxxxxxxxxxx"
     Dim lookups As New LookupsClient(accountSid, authToken)
For Each str4 In ListBox1.Items
    Dim phoneNumber = lookups.GetPhoneNumber(str4, True)
    If ((((Not phoneNumber.Carrier Is Nothing) AndAlso (Not phoneNumber.Carrier.Name Is Nothing)) AndAlso ((Not phoneNumber.NationalFormat Is Nothing) AndAlso (Not phoneNumber.PhoneNumber Is Nothing))) AndAlso (Not phoneNumber.CountryCode Is Nothing)) Then
        Console.WriteLine(phoneNumber.Carrier.Name)
    ElseIf (Not phoneNumber.RestException Is Nothing) Then
        Console.WriteLine(phoneNumber.RestException.Message)
    Else
        Console.WriteLine("Phone number was correct, although the carrier who owns it was not found.")
    End If


Next

but this only does carrier lookup, it does not check if the actual phone number exists.

Upvotes: 1

Views: 2458

Answers (2)

philnash
philnash

Reputation: 73075

Twilio developer evangelist here.

The best way to validate the existence of a phone number is to send an SMS message or make a phone call providing the user with a code that they then need to enter back into your application to show that they got it on that phone. Just using the Lookups functionality of the Twilio API will tell you if the phone number is a phone number, but not whether anyone owns it or uses it with a phone.

There is a good example of how to do phone verification with PHP on the Twilio Blog. There is also an example of phone verification with Ruby on Rails. Hopefully they can help you build out your solution.

Upvotes: 2

k4yaman
k4yaman

Reputation: 485

I would suggest using regular expressions and reading this related article.

Upvotes: 0

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