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Alfiya Siddique

Alfiya Siddique

Quantum Reliability Intern @IBM | SIH Winner 2025 | Mumbai Hacks Winner 2025| Full Stack Developer | AWS Certified Practitioner | Ex Backend Intern @Fyle

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Numverify API

Building a Phone Number Validator using Numverify API and Nodejs -Part 3.

7 min readSep 6, 2022

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If You haven’t read my previous blogs, you can read them here.

In the previous part of this blog, we created front-end files and we learned how to serve them using the express module. Now the final step is to Integrate Numverify API in our project to find whether a number is valid or not.

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What is an API?

An API (Application Programming Interface) is an intermediary program or software that enables two applications to communicate with each other. It can be a service that a software organization provides to help us with certain use cases, such APIs are called third-party APIs. They provide us with data and a way to communicate with an external system.

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Example: Ola cabs and Uber application uses maps in their apps. Do you think that all such type of applications generates their own map? The answer is definitely No! They use APIs to retrieve the map from a third-party system. In this case, the third-party API is Google maps.

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What is Numverify…

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Alfiya Siddique
Alfiya Siddique

Written by Alfiya Siddique

Quantum Reliability Intern @IBM | SIH Winner 2025 | Mumbai Hacks Winner 2025| Full Stack Developer | AWS Certified Practitioner | Ex Backend Intern @Fyle