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Veriphone
CleanCSV AI
Clean Spreadsheets
CleanMyData.io
Our phone number lookup & validation API is the perfect tool to automate fraud protection & clean your database.

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Which is more popular?
Based on our record, Numlookupapi.com seems to be more popular. It has been mentioned 2 times since March 2021.
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| Website | numlookupapi.com | opalstack.com |
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Recommendations tracked on public social media and blogs since March 2021.


Numlookupapi.com - Free phone number validation API - 100k free requests / month. - Source: dev.to / almost 4 years ago
In our main.js, we read the data from the input and send it to the number validation API. For this, we need an API key. In this tutorial, we use numlookupapi.com (they offer a free plan). The main.js could look something like this:. - Source: dev.to / over 4 years ago
Tracking Opalstack since Sep 2023.
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Upload messy CSV or Excel files, detect duplicates, missing values, date issues, and export clean results online.
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Automatically clean customer data with a few clicks
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