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Using Netlify Functions to Create an 'IS IT DOWN?' Validator

ID: d7dc0b5a-836e-5de9-beab-a3ac4d7f5e3f

STIX ID: report--d7dc0b5a-836e-5de9-beab-a3ac4d7f5e3f

Feed Name: HackerOne Blog

Date Published: 2021-01-05

Date Updated: 2026-06-12

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This article is a hands-on tutorial showing how to build, test, and deploy a Netlify serverless function that validates a provided URL and checks whether the target site is reachable using Axios and validator; it includes code snippets, local testing instructions, and deployment notes for Netlify.

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