Live Caller Signal
Incoming number identified
Caller ID
Risk Check
Block Rule
Caller ID + reverse phone lookup app
Caller ID app and reverse phone lookup for unknown numbers.
WhoseNo helps you answer the question "who called me from this number?" with real-time caller ID, spam risk labels, and community scam reports.
Your privacy comes first. We do not upload your contacts without permission, and we do not sell your data.
Caller ID
Identify unknown callers before you answer.
Spam Risk Check
See safe, likely spam, or unknown status quickly.
Spam Call Blocking
Block nuisance numbers and custom patterns.
Core features for caller safety and spam protection
WhoseNo combines caller identification, reverse number intelligence, and spam call controls in one place so you can decide fast whether to answer, block, or ignore.
Caller ID & Spam Alerts
Get live caller identity and real-time spam warnings before answering unknown calls.
Reverse Phone Lookup
Search any number and see community reports, caller details, and risk insights instantly.
Community Scam Reports
Users report and vote on spam, scam, telemarketing, and harassment patterns.
Spam Risk Status
Each lookup is labeled safe, likely spam, or unknown so decisions are quicker.
Manual Blocklist Rules
Block specific numbers or create custom call filtering rules that match your preferences.
Watchlist Updates
Track suspicious numbers and receive updates when new reports are submitted.
Contact Safety Audit
Scan saved contacts to surface numbers that already have community spam reports.
Smart Dialer Mode
Use WhoseNo as your dialer with enhanced call history, keypad, and incoming-call context.
Save to Contacts
Save useful numbers directly from lookup results without manual copying and pasting.
OCR Number Scan
Scan phone numbers from posters, receipts, and screens, then run instant lookup checks.
Biometric App Lock
Protect call history and app activity using fingerprint or face unlock on supported devices.
Receive
An unknown number appears on your phone.
Identify
WhoseNo checks caller identity and spam risk in seconds.
Decide
Answer, ignore, or block based on clear evidence.
Improve
Community reports strengthen future detection for everyone.
Privacy-first by design
WhoseNo is designed for caller safety with user control. Permissions are opt-in, and sensitive activity can be protected with biometric lock.
- No contact upload unless you explicitly allow it.
- No personal data sales to third parties.
- Biometric lock and account-level privacy controls.
Real app screenshots from Google Play
Actual WhoseNo screens for caller ID, live call intelligence, call logs, smart dialer, spam blocking, and privacy controls.
Who called me from this number? Start with reverse phone lookup
If you receive missed calls or suspicious texts, WhoseNo helps you check unknown numbers before responding. You can review caller identity signals, community comments, and spam likelihood to reduce scam exposure and avoid unnecessary callbacks.
How to check if a number is spam
Search the number, check the risk label, and read the latest caller reports. Patterns like repeated robocall complaints, telemarketing tags, and scam notes are strong warning indicators.
What to do after a suspicious call
Block the number, add it to your watchlist, and submit a report so other users can benefit. For high-risk fraud attempts, follow official reporting guidance from public agencies.
- Search intent coverage: who called me, reverse phone lookup free, unknown number lookup, is this number spam, and spam call blocker queries.
- Internal discovery: browse recent spam patterns on recent reports and country-specific trends on country-wise lookups.
- Supporting tools: validate number format with the phone number validator and check recent number activity through recent lookups.
- Consumer safety references: review official robocall guidance from FTC and FCC.
Frequently asked questions about caller ID and reverse lookup
How can I find out who called me from this number?
Open WhoseNo, enter the phone number in reverse lookup, and review caller details, community reports, and spam risk status before you call back.
Is WhoseNo free for caller ID and reverse phone lookup?
Yes. Core features like caller identification, number lookup, spam risk checks, and manual blocking controls are available without subscription fees.
Can WhoseNo block spam calls automatically?
Yes. You can block individual numbers and create custom blocking rules so repeated spam, robocall, or telemarketing numbers do not keep reaching you.
Does WhoseNo upload my contacts?
Not without permission. Contact access is opt-in, and WhoseNo states that user data is not sold to third parties.
Is reverse phone lookup legal?
Using reverse lookup for caller safety and spam prevention is generally legal in many regions, but you should follow local privacy and anti-harassment laws.
How accurate is the spam risk status?
Risk labels are based on report patterns, user voting, and number activity signals. They are designed to help with decision-making, not to replace legal or law-enforcement verification.
Can I check suspicious text message numbers too?
Yes. Reverse lookup can be used for missed calls and unknown text numbers so you can screen risk before replying.
What if scammers spoof a trusted caller ID name?
Caller ID spoofing exists, so always verify unknown requests through official channels. You can also review FCC and FTC guidance for robocall and scam reporting.
Which countries does WhoseNo support?
WhoseNo is used globally and supports number checks across many countries, with coverage reinforced by ongoing community reporting and voting.
Note: search-result FAQ rich snippets are currently limited by Google to specific site types in some verticals. This section is written primarily for user clarity and intent coverage.
Download WhoseNo and take control of every call.
Use caller ID, reverse phone lookup, and spam call blocking to handle unknown numbers with more confidence.
Get WhoseNo on Google Play