Who called me? Check a phone number for free

Type in the unknown number and find out who called — telemarketing, a scam, or a call worth returning.

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For example: 087 123 4567 or +353 1 234 5678

Had a nuisance call? Add a report →

News and articles

All articles →

How it works

Three simple steps to find out who was trying to reach you.

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Look up the number

Enter the number that called you. Works with spaces and with the +353 prefix.

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Read the reports

Comments, community verdicts and an overall safety rating.

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Add your own

Anonymous, quick, no sign-up. Help others the way they helped you.

Something extra

A community rating, not a random thumbs-up

Every report on a number carries one of five colour-coded verdicts — from useful through nuisance to dangerous. We combine them into an overall verdict, so you know at a glance whether to call back or block the number.

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    Five verdicts — Useful, Safe, Neutral, Nuisance, Dangerous.
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    Overall verdict — calculated from community votes, so you instantly see whether to pick up.
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    Number facts — area code, network, type (mobile / landline / 1800 / 0818 / 15xx…) based on the Irish National Numbering Scheme.

Encyclopedia and glossary

So far we have 35 glossary entries, 30 detailed scam guides and 25 answers to common questions.

Glossary 35

All glossary entries →
Smishing Fraud by text message: a link to a fake delivery, bank or payment page built to … Action Fraud The national reporting centre for fraud and cybercrime in England, Wales and Nor… VoIP (internet calling) Calls carried over the internet instead of a traditional phone line, used by mos… Phishing Any attempt to trick you into handing over passwords, card details or money by i… MVNO (virtual network operator) A mobile brand that sells service over another company’s network instead of runn… Do Not Originate (DNO) list A list of inbound-only numbers never used for outgoing calls, so providers can b… Caller ID spoofing Faking the number shown on your screen so that a call appears to come from your … Number portability (PAC code) Your right to keep your phone number when you change provider, and the reason a …

Scam encyclopedia 30

All scams →
HMRC tax rebate and “arrest warrant” scams Texts promising a tax refund and automated calls threatening arrest for unpaid t… One-ring missed calls (wangiri) Your phone rings once from an unfamiliar international or 070 number and stops b… Ofgem and “energy rebate” texts and calls Texts and calls offer an energy bill rebate, support payment or discount “from O… Cloned voices and the family emergency call The phone rings and it is your daughter, in tears, saying she has had an acciden… Premium-rate text subscriptions and how to stop them Charges for texts you never asked for appear on your mobile bill: a quiz, a comp… Pension cold calls and “liberation” schemes A caller offers a free pension review, a way to unlock your pension early or an …

Questions and answers 25

All questions →

Quick links

Area code 01Dublin Area code 021Cork Area code 091Galway Area code 061Limerick Area code 051Waterford NetworksVodafone, Three, Eir and others All area codesEvery Irish dialling code Dangerous numbersPremium rate and reported scams Top numbersMost reported Emergency numbers112 and 999
38 numbers on record
0 community reports
0 new reports today
0 flagged as dangerous
Help others

Had a nuisance call? Warn the next person.

Your report saves a minute for someone else who will google the same number. It takes 30 seconds, it is anonymous and needs no account.

Add a report

Which number called you?

Opens the number’s page, where you can add your report straight away.

Frequently asked questions

How does cislo.info work?

People come here to look up numbers that called them. Every number has community reports and verdicts plus facts based on the Irish National Numbering Scheme. If you have your own experience with a number, add it — you are helping the next person.

Is it free?

Yes. Searching and adding reports is completely free and needs no sign-up.

What do the colour-coded verdicts mean?

For each report you pick one of five verdicts: Useful (green), Safe (blue), Neutral (grey), Nuisance (orange), Dangerous (red). They add up to an overall safety score.

How do you know which network a number belongs to?

From open numbering data based on the National Numbering Scheme, which is managed by ComReg, the communications regulator. We show the network the range was originally assigned to — the number may since have been ported to another provider.

Which Irish numbers cost extra to call?

15xx numbers (for example 1550 or 1590) are premium rate — the price depends on the range, and ComReg publishes the maximum price for each one. Premium-rate text services use five-digit short codes starting with 5. To end a subscription, text STOP to the short code; Vodafone, Three and Eir will also bar premium-rate texts free of charge if you ask. 1800 Freephone numbers are free to call. 0818 numbers are included in bundles that cover landline calls and otherwise cost no more than a call to a landline. The old 1850, 1890 and 076 numbers stopped working after 31 December 2021.

Can I report a false comment?

Yes. Every report has a Flag button. Flagged reports are checked by an administrator, who can hide or delete them.