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Olly
Olly

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Validate phone numbers in 3 lines of Python (carrier, line type, E.164)

#python #api #tutorial #webdev

Bad phone numbers quietly break SMS onboarding, 2FA and CRM imports. Here's how to clean them at signup time with one HTTP call.

The request 

import requests
r = requests.get(
    "https://phonekit-phone-number-validation-carrier-line-type.p.rapidapi.com/validate",
    params={"number": "07911 123456", "country": "GB"},
    headers={"X-RapidAPI-Key": "YOUR_KEY",
             "X-RapidAPI-Host": "phonekit-phone-number-validation-carrier-line-type.p.rapidapi.com"})
print(r.json())
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What you get back 

{"valid": true, "e164": "+447911123456", "international": "+44 7911 123456",
 "line_type": "mobile", "carrier": "JT", "region": "GG",
 "timezones": ["Europe/Guernsey", "Europe/London"]}
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Practical uses

  • Store e164 only, so duplicates stop slipping in as "07911…" vs "+44 7911…".
  • Block line_type: "voip" or "fixed_line" before you pay to send an SMS code.
  • Use timezones to avoid texting people at 3 a.m.
  • POST /bulk cleans 100 numbers per call for CRM imports.

It's built on Google's libphonenumber metadata (240+ regions). Free tier: 200 calls/month. PhoneKit on RapidAPI

What do you use for phone validation today? Happy to add fields people need.

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