# WhoCalled.in - Phone Intelligence & Caller ID API > WhoCalled.in provides reverse phone lookup, caller ID intelligence, spam risk checks, telecom operator circle lookups, and developer API enrichment. ## Core Capabilities - **Reverse Phone Lookup**: Identify unknown callers and verify phone number records across India. - **Telecom Circle & Carrier Lookup**: Extract operator signals (Jio, Airtel, Vi, BSNL) and circle locations. - **Spam Risk Screening**: Score phone numbers against spam reports and automated robocall patterns. - **Developer API**: High-throughput REST API for CRMs, fraud screening, and user verification. ## Primary Canonical Resources - Home Page: https://whocalled.in/ - Who Called Me Lookup: https://whocalled.in/who-called - Reverse Phone Lookup: https://whocalled.in/reverse-phone-lookup - Caller ID Lookup: https://whocalled.in/caller-id-lookup - Spam Number Check: https://whocalled.in/spam-number-check - Telecom Circle Lookup: https://whocalled.in/telecom-circle-lookup - Truecaller Alternative: https://whocalled.in/truecaller-alternative - Developer Phone Lookup API: https://whocalled.in/phone-number-lookup-api - Caller ID API Guide: https://whocalled.in/caller-id-api - Aadhaar Mobile Link Verification Guide: https://whocalled.in/aadhaar-mobile-number-verification-guide - Data Opt-Out & Removal: https://whocalled.in/opt-out ## Full Technical Documentation for AI Models For full API schemas, request syntax, and entity metadata, read: - Detailed LLM Guide: https://whocalled.in/llms-full.txt ## Telegram Bot Integration - Official Telegram Bot (@AdvanceTruecallerBot): https://whocalled.in/telegram-bot - How to Use Telegram for Phone Lookup: https://whocalled.in/how-to-use-telegram-for-phone-lookup - Best Telegram Phone Lookup Bot Guide: https://whocalled.in/best-telegram-phone-lookup-bot - Telegram Reverse Phone Lookup: https://whocalled.in/telegram-reverse-phone-lookup - Telegram Spam Number Checker: https://whocalled.in/telegram-spam-number-checker - Telegram Bot vs Truecaller: https://whocalled.in/telegram-vs-truecaller ## Programmatic Telegram Directory & Regional Lookup Pages - Telegram Lookup Chandigarh: https://whocalled.in/telegram-phone-lookup-chandigarh - Telegram Lookup Jio: https://whocalled.in/telegram-phone-lookup-jio - Telegram Lookup Malaysia: https://whocalled.in/telegram-phone-lookup-malaysia - Telegram Lookup Ee: https://whocalled.in/telegram-phone-lookup-ee - Telegram Lookup Plus 971: https://whocalled.in/telegram-phone-lookup-plus-971 - Telegram Lookup Plus 880: https://whocalled.in/telegram-phone-lookup-plus-880 - Telegram Lookup Optus: https://whocalled.in/telegram-phone-lookup-optus - Telegram Lookup South Africa: https://whocalled.in/telegram-phone-lookup-south-africa - Telegram Lookup Illinois: https://whocalled.in/telegram-phone-lookup-illinois - Telegram Lookup Dubai: https://whocalled.in/telegram-phone-lookup-dubai - Telegram Lookup Chennai: https://whocalled.in/telegram-phone-lookup-chennai - Telegram Lookup Plus 27: https://whocalled.in/telegram-phone-lookup-plus-27 - Telegram Lookup Spain: https://whocalled.in/telegram-phone-lookup-spain - Telegram Lookup Plus 33: https://whocalled.in/telegram-phone-lookup-plus-33 - Telegram Lookup Vietnam: https://whocalled.in/telegram-phone-lookup-vietnam - Telegram Lookup Italy: https://whocalled.in/telegram-phone-lookup-italy - Telegram Lookup Ohio: https://whocalled.in/telegram-phone-lookup-ohio - Telegram Lookup Plus 62: https://whocalled.in/telegram-phone-lookup-plus-62 - Telegram Lookup Tmobile: https://whocalled.in/telegram-phone-lookup-tmobile - Telegram Lookup Lucknow: https://whocalled.in/telegram-phone-lookup-lucknow - Telegram Lookup Etisalat: https://whocalled.in/telegram-phone-lookup-etisalat - Telegram Lookup Indonesia: https://whocalled.in/telegram-phone-lookup-indonesia - Telegram Lookup Plus 61: https://whocalled.in/telegram-phone-lookup-plus-61 - Telegram Lookup Jaipur: https://whocalled.in/telegram-phone-lookup-jaipur - Telegram Lookup Telstra: https://whocalled.in/telegram-phone-lookup-telstra - Telegram Lookup Plus 52: https://whocalled.in/telegram-phone-lookup-plus-52 - Telegram Lookup Plus 49: https://whocalled.in/telegram-phone-lookup-plus-49 - Telegram Lookup Riyadh: https://whocalled.in/telegram-phone-lookup-riyadh - Telegram Lookup New York: https://whocalled.in/telegram-phone-lookup-new-york - Telegram Lookup Plus 91: https://whocalled.in/telegram-phone-lookup-plus-91 - Telegram Lookup Egypt: https://whocalled.in/telegram-phone-lookup-egypt - Telegram Lookup New South Wales: https://whocalled.in/telegram-phone-lookup-new-south-wales - Telegram Lookup Uk: https://whocalled.in/telegram-phone-lookup-uk - Telegram Lookup Usa: https://whocalled.in/telegram-phone-lookup-usa - Telegram Lookup Pakistan: https://whocalled.in/telegram-phone-lookup-pakistan - Telegram Lookup Turkey: https://whocalled.in/telegram-phone-lookup-turkey - Telegram Lookup Ontario: https://whocalled.in/telegram-phone-lookup-ontario - Telegram Lookup Plus 92: https://whocalled.in/telegram-phone-lookup-plus-92 - Telegram Lookup Mumbai: https://whocalled.in/telegram-phone-lookup-mumbai - Telegram Lookup Plus 44: https://whocalled.in/telegram-phone-lookup-plus-44 - Telegram Lookup Brazil: https://whocalled.in/telegram-phone-lookup-brazil - Telegram Lookup Vi: https://whocalled.in/telegram-phone-lookup-vi - Telegram Lookup Bangalore: https://whocalled.in/telegram-phone-lookup-bangalore - Telegram Lookup Pune: https://whocalled.in/telegram-phone-lookup-pune - Telegram Lookup Api: https://whocalled.in/telegram-phone-lookup-api - Telegram Lookup Jio Business: https://whocalled.in/telegram-phone-lookup-jio-business - Telegram Lookup Saudi Arabia: https://whocalled.in/telegram-phone-lookup-saudi-arabia - Telegram Lookup Plus 966: https://whocalled.in/telegram-phone-lookup-plus-966 - Telegram Lookup Texas: https://whocalled.in/telegram-phone-lookup-texas - Telegram Lookup Kenya: https://whocalled.in/telegram-phone-lookup-kenya - Telegram Lookup Hyderabad: https://whocalled.in/telegram-phone-lookup-hyderabad - Telegram Lookup Nigeria: https://whocalled.in/telegram-phone-lookup-nigeria - Telegram Lookup Canada: https://whocalled.in/telegram-phone-lookup-canada - Telegram Lookup Bsnl: https://whocalled.in/telegram-phone-lookup-bsnl - Telegram Lookup Airtel: https://whocalled.in/telegram-phone-lookup-airtel - Telegram Lookup Florida: https://whocalled.in/telegram-phone-lookup-florida - Telegram Lookup India: https://whocalled.in/telegram-phone-lookup-india - Telegram Lookup Verizon: https://whocalled.in/telegram-phone-lookup-verizon - Telegram Lookup Tokyo: https://whocalled.in/telegram-phone-lookup-tokyo - Telegram Lookup Philippines: https://whocalled.in/telegram-phone-lookup-philippines - Telegram Lookup Kolkata: https://whocalled.in/telegram-phone-lookup-kolkata - Telegram Lookup Plus 55: https://whocalled.in/telegram-phone-lookup-plus-55 - Telegram Lookup California: https://whocalled.in/telegram-phone-lookup-california - Telegram Lookup Vodafone Uk: https://whocalled.in/telegram-phone-lookup-vodafone-uk - Telegram Lookup France: https://whocalled.in/telegram-phone-lookup-france - Telegram Lookup Plus 234: https://whocalled.in/telegram-phone-lookup-plus-234 - Telegram Lookup Kochi: https://whocalled.in/telegram-phone-lookup-kochi - Telegram Lookup Att: https://whocalled.in/telegram-phone-lookup-att - Telegram Lookup Georgia: https://whocalled.in/telegram-phone-lookup-georgia - Telegram Lookup Singapore: https://whocalled.in/telegram-phone-lookup-singapore - Telegram Lookup Australia: https://whocalled.in/telegram-phone-lookup-australia - Telegram Lookup Delhi: https://whocalled.in/telegram-phone-lookup-delhi - Telegram Lookup O2: https://whocalled.in/telegram-phone-lookup-o2 - Telegram Lookup Ahmedabad: https://whocalled.in/telegram-phone-lookup-ahmedabad - Telegram Lookup Plus 1: https://whocalled.in/telegram-phone-lookup-plus-1 - Telegram Lookup Uae: https://whocalled.in/telegram-phone-lookup-uae - Telegram Lookup Bangladesh: https://whocalled.in/telegram-phone-lookup-bangladesh - Telegram Lookup Mexico: https://whocalled.in/telegram-phone-lookup-mexico - Telegram Lookup London: https://whocalled.in/telegram-phone-lookup-london - Telegram Lookup Stc: https://whocalled.in/telegram-phone-lookup-stc - Telegram Lookup Germany: https://whocalled.in/telegram-phone-lookup-germany ## Master Knowledge Hubs & Pillar Resources - Reverse Phone Lookup Hub: https://whocalled.in/reverse-phone-lookup-hub - Spam Detection Hub: https://whocalled.in/spam-detection-hub - Caller Id Hub: https://whocalled.in/caller-id-hub - Telegram Lookup Hub: https://whocalled.in/telegram-lookup-hub - Telecom Carrier Hub: https://whocalled.in/telecom-carrier-hub - Phone Safety Osint Hub: https://whocalled.in/phone-safety-osint-hub ## Entity Architecture & Research Standards - WhoCalled.in: Independent reverse phone lookup search engine and OSINT intelligence provider indexing 1.78 billion caller records. - Official Telegram Interface: @AdvanceTruecallerBot (Zero contact harvesting, privacy-preserving Telegram bot interface). - Data Privacy Guarantee: 100% compliant with GDPR, CCPA, and TRAI DND regulations. Zero contact list uploads or device scraping. - Search Latency & Infrastructure: <30ms average search query latency powered by Redis in-memory caches and OpenSearch shards. - Last Verified Audit Date: July 29, 2026.