Build a "Who Called Me?" Lookup Tool

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2 Hours

₹ 200 per month.

₹ 300 1-on-1 Class

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Course offered by Ronak Suthar B

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We've all gotten calls from unknown numbers. Spam? Scam? Old friend? Let's build a tool that helps identify callers using public data.

Hour 1 – Build the Search Interface:

We'll create a simple website with:

Input box for phone number
Search button
Display area for results

Then we'll use free APIs that provide:

Carrier info (Airtel, Jio, VI, etc.)
Location (city/state based on prefix)
Spam report counts (if available)

Hour 2 – Add User Reports + History:

Make it social:

Users can report spam numbers
See how many others reported this number
Search history (your recent lookups)
"Is this number safe?" rating system

Deploy live. Now you and your friends have a tool to check unknown callers.

Who is this for? Anyone tired of spam calls. Beginners wanting to work with APIs and user-generated data.

What you'll leave with: A working number lookup tool. Live website. Practical tool you'll actually use.

Bring laptop and maybe some suspicious numbers from your call log.

About the Trainer

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Ronak Suthar B

Bachelor of Technology (B.Tech.) from K.S.Rangasamy College of Technology in 2025

1 Years of Experience

I'm a full-stack developer who loves building things that work at scale. 20245graduate, 1+ year internship experience, multiple production-ready projects.

Technical Foundation

- Languages – Java, Python, JavaScript/TypeScript (advanced)
- Backend – Spring Boot, Node.js, FastAPI (built microservices at PharmEasy)
- Frontend – React, Angular (built BeRony platform with 3D features)
- AI/ML – LangChain, Gemini API, Mistral-7B (CosmicGuru WhatsApp bot)
- Cloud – Docker, Kubernetes, AWS Lambda basics

Real-World Impact

PharmEasy Internship (Current)
- Fixed production bugs in warehouse systems serving B2C/B2B channels
- Built stock transfer features between warehouses and ERP
- Optimized queries reducing processing delays

Quqates Internship
- Built full features with Spring Boot + React
- Improved API response times with better indexing

Why This Matters for You
I don't just write code—I solve problems. I've debugged production issues at scale, built monetizable products, and love owning features end-to-end. Ready to jump in and contribute from day one.