Frequently Asked Questions

KtoZvonil is a free reverse phone lookup and reviews service. Enter a number and you'll see what other people have reported about it — whether it's a scammer, spam, a bank, a delivery service, a survey or just an ordinary call — along with the operator and region.

Almost all of the information comes from reviews left by other users, plus public data. The more people share, the more useful it gets.

Type the number into the search box on the home page (with or without the country code), or open it directly: ktozvonil.net/number/<number>. You'll see the overall verdict, the reviews, the category breakdown and the operator/region.

If there are no reviews yet, you can be the first to add one. There's also a free Chrome extension that shows the verdict for numbers right in your browser.

Open the number's page and fill in the form at the bottom: pick a category (scammer, spam, bank, ad, useful, etc.), give it a rating and describe what happened. No account or registration is needed.

Keep it factual — don't post other people's personal data, threats or obscenities; such reviews are removed.

Yes. Checking numbers, reading reviews and leaving reviews are all completely free, with no registration. There is no paid version.

Write to abuse@ktozvonil.net (or use the form on the contacts page) with the number and a link to the review. We look at removal requests and reply within 24 hours.

If a review contains your personal data, defamation or threats, it will be taken down. You can also ask to hide your entire number page from public view. Reviews are anonymous, so for requests to delete your own comment we may ask for a detail only the author would know.

Reviews are written by other users. They pass an automatic obscenity and spam filter, plus manual moderation of reports, and reviews posted via VPN/proxy/datacenter IPs are flagged so you can weigh them accordingly. Treat the verdicts as crowd opinion, not official fact — but a number with dozens of consistent "scammer" reports is a strong signal.

If you get a suspicious call, don't call back and don't follow instructions from it: banks and government services never ask for full card numbers, one-time codes or transfers by phone. Check the number here, block it, report it to your mobile operator, and — if you lost money — to the police. Leaving a review here helps the next person who gets the same call.