Know who's calling.
Before you answer.
Instant spam detection, trust scoring, and number intelligence — for individuals and teams building smarter call workflows.
Free caller report
Guests can run one full report. Create a free account to unlock 20 monthly analyses.
Choose your path
A call safety decision system built for real-world scams.
FilterCalls does more than label a number as spam. It explains what to do, what to say, what not to share, and how to verify safely before the conversation becomes risky.
The verdict
Do not answer
This caller matches high-risk indicators and should be verified through official channels, not through the incoming call.
Call Safety Score
12/100
Confidence
91%
“I do not share verification codes or payment details over unsolicited calls. I will verify through official channels.”
Safety guidance included
AI Decision Engine
Should I answer?
Turns caller risk, trust, intent, and community signals into a clear action: block, verify first, voicemail, or answer cautiously.
Call Safety Certificate
Share the proof
Creates a report that explains the verdict, safe response, do-not-share list, and verification path in one readable certificate.
Scam Playbooks
Know the pattern
Teaches users how bank OTP, delivery, government, AI voice, crypto, and debt collection scams typically unfold.
Privacy-first
No call recording
Designed around pre-answer decision intelligence, hashed reputation signals, and practical safety guidance without voice surveillance.
Analyze
Risk, trust, intent, line type, and reputation signals.
Decide
Block, verify first, send to voicemail, or answer cautiously.
Defend
Safe response, do-not-share list, and verification path.
160+ countries
Global number coverage
Instant results
Analysis in milliseconds
Spam detection
Pattern-based intelligence
API-ready
REST API + webhooks
Everything you need to analyze calls
From spam filtering to developer integrations — one platform for phone number intelligence.
Spam Detection
Identifies flagged numbers, spam patterns, and reported call sources across global datasets.
Scam & Robocall Intelligence
Detects automated call signatures, scam indicators, and high-risk caller behaviors.
Trust Scoring
Every number receives a 0–100 trust score with confidence rating and risk classification.
Number & Country Context
Carrier identification, region data, line type, and country intelligence per number.
Developer API
REST API with full documentation, rate limits, and structured JSON responses.
Webhook Integrations
Real-time event delivery to your systems for automated call screening workflows.
How it works
Three steps from unknown number to confident decision.
Enter any phone number
Paste or type any number in international format. No account required to start.
Analyze risk and trust signals
FilterCalls checks spam patterns, carrier data, country context, and trust indicators instantly.
Act with confidence
Block, allow, or route calls based on a clear trust score. Integrate via API for automated workflows.
Community-powered reputation — coming online
FilterCalls now turns community reports into aggregate caller reputation while protecting raw phone numbers.
Built for every use case
Whether you are checking one number or screening thousands.
Stop unknown calls before they reach you
- Identify suspicious caller patterns
- Block spam before it rings
- Check any number, instantly
Integrate phone intelligence into your stack
- REST API with full documentation
- Webhook-based call screening
- 25 API keys on Pro plan
Know the call before the caller controls the conversation.
Explore practical call-scam playbooks that break down what the caller may say, what it really means, what not to share, and how to verify safely.
Live library
8
scam call playbooks
Step 1
Analyze the number
Start with risk, trust, caller intent, and the AI call decision.
Step 2
Recognize the playbook
Understand the script, pressure pattern, lifecycle, and red flags.
Step 3
Verify safely
Use saved contacts, official apps, websites, or known numbers before responding.
Simple pricing
One upgrade. No fake tiers.