Validate any UK phone number, identify the type (mobile, landline, freephone, premium), see the geographic area for 01/02 numbers and the original Ofcom range holder — instantly, with no signup.
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UK’s Top Spam & Scam Numbers This Week
AI-verified from real consumer reports — updated every Wednesday.
| Rank | Number | Reported as | Type |
|---|---|---|---|
| #1 | 0800 761 3372 | Sky UK Limited Users report receiving unsolicited calls from Sky UK Limited offering various services. | Telemarketing |
| #2 | 0800 497 0623 | Domestic & General Users report calls from this number impersonating Domestic & General to sell appliance insurance, often targeting existing customers. | Scam |
| #3 | 0800 1111 | Childline Childline is a free, confidential service for children and young people in the UK. | Verified |
| #4 | 0800 028 2321 | BT text-to-voice service Automated service notifying about SMS messages received on landlines. | Verified |
| #5 | 0113 419 9971 | Loungers Ltd Loungers Ltd operates a chain of restaurants and lounges across the UK, including locations in Bristol, Nottingham, and Ely. | Verified |
| #6 | 0344 809 0202 | O2 Customer Service Users report receiving calls from this number claiming to be O2, offering fraudulent deals or attempting to steal account information. | Scam |
| #7 | 020 4537 6782 | Housing Association Scam Users report unsolicited calls claiming to be from housing associations, often about non-existent issues. | Scam |
| #8 | 07379 885614 | HMRC Users report receiving calls from this number claiming to be from HMRC, warning of legal action for unreturned forms. | Scam |
| #9 | 020 3322 2305 | Amazon Delivery Users report this number as Amazon delivery drivers confirming or arranging deliveries. | Verified |
| #10 | 0333 202 9470 | British Gas Users report receiving unsolicited calls claiming to be from British Gas, attempting to schedule smart meter installations. | Scam |
| #11 | 0330 223 8130 | Venrex Investment Management LLP Venrex Investment Management LLP is a legitimate business located at 22 Percy Street, London, W1T 2BU. | Verified |
| #12 | 07364 165789 | Margaret Robinson Reported as a cost trap call from someone named Margaret Robinson. | Scam |
| #13 | 0113 322 1050 | Curve Credit Limited Curve Credit Limited is a financial services company based in London. | Verified |
| #14 | 07441 955492 | Investment Scam Caller Users report receiving unsolicited calls from this number, often involving fraudulent investment schemes. | Scam |
| #15 | 07394 513075 | Job Agency Scam Users report receiving unsolicited job offers via text or WhatsApp from this number. | Scam |
| #16 | 07441 933356 | Investment Scam Caller Users report this number is associated with investment scams involving WhatsApp groups. | Scam |
| #17 | 0191 380 0888 | Neptune Property Developments Europe Limited Users report calls from this number as legitimate business communications. | Verified |
| #18 | 07379 885796 | Tax Scam Users report receiving scam calls from this number claiming to be from HMRC or other organizations. | Scam |
| #19 | 07922 331048 | Evri Text message claiming parcel was taken back. | Spam |
| #20 | 0333 092 9126 | Freedom Logistics U.K. Limited Users report receiving calls from Freedom Logistics U.K. Limited, a legitimate business. | Verified |
Use this free UK phone number checker to validate any UK telephone number, identify the number type (mobile, landline, freephone, premium and more), get call-cost guidance, see the geographic area for 01/02 numbers, and look up the original Ofcom range holder — using live Ofcom numbering data, refreshed weekly. Free, no signup, results in milliseconds.
UK Telephone Number Types Explained
UK phone numbers are divided into number ranges, each with different pricing and purpose. Tap any card below for the key facts on each range.
Geographic Landlines
Tied to a specific town or city. Common codes include 0161 (Manchester), 0121 (Birmingham), 0151 (Liverpool). Charged at standard geographic rate, included in inclusive minutes on most plans.
Geographic Landlines
Larger metropolitan areas: 020 (London), 023 (Portsmouth/Southampton), 028 (Northern Ireland), 029 (Cardiff). Same call charges as 01 numbers.
Business & Non-Geographic
Non-geographic but charged the same rate as 01/02, even from mobiles. Includes 0300 (NHS, gov, charities) and 0330/0333 (UK businesses). 0300 numbers are NOT free — just charged at the geographic rate.
Corporate & VoIP
The 056 range is used by IP-based business phone systems and call-routing providers. Pricing varies by provider and may not be included in standard call bundles.
Mobile Numbers
UK mobile phones — 11 digits, starts 074, 075, 077, 078 or 079. Included in mobile/landline minutes on most plans. 070 is NOT a mobile (see below) and 076 is reserved for pagers.
Freephone & Service
0800 / 0808 are free to call from UK landlines and mobiles (since July 2015). 084 / 087 are service numbers with a service charge (up to 7p/13p per minute) plus your provider’s access charge.
Premium Rate
The most expensive UK numbers — service charges up to £3.60/min plus access charge. Used for paid services, voting, competitions. Regulated by Ofcom and the Phone-paid Services Authority. Treat unexpected 09 callbacks as scams.
Personal Numbering
NOT mobile numbers despite starting “07”. A “personal numbering” service that forwards calls to any other number — and one of the most common UK scam-call ranges. Callbacks can cost £1+ per minute. Don’t call back unknown 070 numbers.
Directory Enquiries
UK directory enquiry services. Ofcom price-cap them at £3.65 per 90 seconds for the most-used services (118 118, 118 500). For most lookups, our free checker, Google or your phone’s contacts app does the same job at zero cost.
How Our Checker Works (and why it’s better than the free alternatives)
Most free phone-number lookup sites are lead-generation forms in disguise, run on scraped or stale data, or only cover US numbers. This checker is different — it runs on the official Ofcom numbering dataset, hosted on our own UK infrastructure and re-imported every week:
Direct from Ofcom
We import the official Ofcom S1–S10 numbering files every Wednesday morning, into our own UK-hosted database. No third-party API, no rate-limit games.
Sub-millisecond lookups
The database is indexed for longest-prefix matching, so a typical lookup completes in under 1ms — versus 1–5 seconds for some competitor tools.
Built by UK telecoms experts
Connection Technologies has provided UK business mobiles, hosted VoIP and broadband for 30+ years. We use this exact data internally for porting and call routing.
No signup, no data harvesting
Free to use, with no account and no email address needed to get your result. We never sell or share the numbers you look up. The page does carry advertising and partner links — that is what keeps the lookup free and unlimited.<
Trying to find out who called you?
Had a missed call from a number you don’t recognise? Start with the checker above — it identifies the number type instantly and flags scam-prone ranges such as 070 and 09. For prefix-by-prefix lookups (07441, 070, 0204 and more), this week’s most-reported numbers from other UK callers, and practical steps for blocking and reporting nuisance calls, see our dedicated Who Called Me? guide.
Need a UK Business Phone Number?
If you’re a UK business that needs new phone numbers — a memorable 0330 / 0333 non-geographic, a free-to-callers 0800, a local 0207 / 0161 / 0121 area code for credibility — Connection Technologies’ Hypercloud Hosted VoIP platform can have you live with new DDIs (direct dial-in numbers), call routing, an IVR menu, voicemail-to-email and softphone apps for your team in days, not weeks.
Frequently Asked Questions
Is this number a scam? How can I tell?
Our checker flags any number in a known high-risk Ofcom range — particularly 070 personal numbers and certain 09 premium-rate ranges — with a Risk: High warning. Beyond the checker, common scam signs:
- An unsolicited missed call from an unfamiliar 070 or 09 number — do not call back (callback charges can be £1+/minute)
- A “spoofed” number that fails our validity check (it’s not a real Ofcom-allocated number)
- A withheld or international number claiming to be a UK government department
- Pressure to “press 1 to be connected” or transferred to a “fraud team”
When in doubt: hang up and call the organisation back on a number from their official website. Report nuisance calls to the ICO.
Are 0800 and 0808 numbers really free from mobile phones?
Yes — completely free. Since 1 July 2015, all UK consumer mobile contracts must offer 0800 and 0808 calls free of charge, the same as from a landline. This applies to:
- The four MNOs: EE, O2, Three, Vodafone
- Every UK MVNO: Sky Mobile, Tesco Mobile, BT Mobile, giffgaff, Lebara, iD Mobile, Smarty, Voxi, etc.
- Both pay-monthly and pay-as-you-go contracts
There is no service charge and no access charge — the receiving business pays for the call.
Are 0333, 0330, 0300, 0345 and 0370 numbers free?
No — but they’re cheap and usually included in your minutes. All “03” numbers are charged at the same rate as a standard 01 or 02 call, including from mobiles. The key point: they’re included in any inclusive landline or mobile minutes you have on your tariff, so on a typical modern phone plan, calling them costs you nothing extra.
Use case for businesses:
- 0300 — restricted to NHS, government, councils, registered charities
- 0330 / 0333 — open to UK businesses, the most popular non-geographic option
- 0345 — used by many banks (it replaced the old 0845 numbers)
- 0370 — the natural replacement for 0870
How many digits does a UK phone number have?
A standard UK phone number is 10 or 11 digits including the leading 0. Breakdown:
- UK mobiles: always 11 digits, starting
07(e.g.07700 900123) - UK geographic landlines: usually 11 digits (e.g.
0161 123 4567) — but London (020), Cardiff (029), Belfast (028), Northern Ireland and a few others use 10 digits - Non-geographic (03, 05, 08, 09): always 11 digits
- Freephone 0800: 9 or 10 digits in older allocations, 11 digits in newer ones
Internationally, drop the leading 0 and prefix with +44 — so 020 7946 0958 becomes +44 20 7946 0958.
What is a "range holder" — and why does it matter?
The range holder is the UK communications provider (BT, Gamma, Vodafone, Sky, Mainline, Virtual1, etc.) that Ofcom originally allocated a block of numbers to. Each Ofcom block is typically 1,000 or 10,000 consecutive numbers, and the range holder is the most reliable public clue about who really runs the number.
Caveat: numbers can be ported (transferred) to a different provider after allocation, so the current operator may differ. But for spotting scams and identifying business callers, the range holder is the standard industry reference — it’s what 999/112 emergency services use too.
Why am I getting calls from numbers starting 0204, 0203 or 0207?
All three are London (020) numbers — different “overlay” allocations Ofcom has opened over time as the original blocks filled up:
- 0207 — first London allocation (replaced the old 0171 in 2000)
- 0208 — Outer London (replaced 0181 in 2000)
- 0203 — opened 2005 to add capacity
- 0204 — opened from 2018 for the same reason
Functionally, they’re all London — same call cost, same Ofcom-allocated to UK businesses (often via VoIP providers). Type any 0204 / 0203 / 0207 / 0208 number into the checker to see the specific range holder.
What is an 070 number?
070 is “personal numbering” — NOT a mobile, despite starting with “07”. It’s a forwarding service: a person buys an 070 number which then forwards to any other phone (mobile, landline, voicemail). Two key facts:
- Calls to 070 numbers are significantly more expensive than calls to a real 07 mobile — often £1+ per minute
- 070 ranges are heavily abused for callback scams — a missed call you “must” return triggers premium charges to you
Our checker flags every 070 number with a Risk: High warning. Don’t call back unknown 070 numbers.
How often is the data in this checker updated?
Ofcom publishes updated UK numbering data every Wednesday. We re-import the full official dataset (S1–S10 ranges covering geographic, non-geographic, mobile, freephone, premium, corporate and 118 numbers) automatically every Wednesday morning at 03:00 UK time, into our own UK-hosted database.
This means newly allocated number blocks are recognised by the checker within a week of release — and you’re always looking at official Ofcom data, not a third-party scrape that may be months out of date.
Worth adding as step four: if a scam call or text has sent you to a website, a NordVPN subscription with Threat Protection blocks known phishing and malware domains before the page loads. Ad — we may earn a commission if you subscribe, at no extra cost to you.
Browse lookups by prefix
Recognise the start of the number? Each guide covers who owns the range, current scam patterns and how to block it — or see the full who-called-me directory.
Mobile ranges
Business & non-geographic
London codes
Freephone & service
High-risk ranges
UK area-code dialling guides
Look up who calls from any UK area code, what each prefix means, and what local numbers cost. Tap a city or region to read the full guide.
Recent community reports
See what UK callers are flagging right now — tap any card to look up that number and read the full report.
recorded message asking to press!!! didn't bother.
dfgvdddfvdbvdfbdfdfb
Claimed to be my bank and asked for details of cards and accounts
Scam: Rude stranger started speaking Chinese once I said hello, he said: here is the thing, come to my office tomorrow in a command voice
Recorded message asking me to ring back on a mobile number
Robot asking to add number to whatsapp for interview
Came through as a missed call bit I guess my phone considered it spam as it never rang
Not sure who it is, rings about 4/5 times a day but is silent. Flagged as spam multiple times.
Left a message, couldn’t make out first part but second part basically end with ‘f**k you
No voicemail left - spam
marketing call.
Silent call, no one there
Protect Yourself From UK Phone Scams
UK adults lost more than £1.17 billion to fraud in 2023 (UK Finance), and phone-based scams — including impersonation, investment fraud and authorised push-payment (APP) scams — remain the single largest channel. If you receive a suspicious call, these are the protective steps and tools UK consumers and businesses use to reduce their exposure.
Block unknown numbers
Use a UK call blocker app such as Hiya, Truecaller or your network’s built-in spam filter (BT Call Protect, EE Scam Shield, Sky Scam Block, Vodafone Spam Guard) to auto-screen suspected scam and silent calls before they ring.
Check identity-theft exposure
Pair a phone-number check with an email breach lookup — most phone-based fraud follows a credential leak. Free monitoring tools tell you if your email or passwords appear in known UK data breaches.
Enable bank fraud alerts
Switch on push-notification banking security alerts for every outbound payment and contactless transaction. Most UK banks now offer in-app scam-protection prompts, biometric step-up and instant payment cancellation if you act in time.
Don’t share verification codes
Legitimate banks, HMRC, the police and delivery couriers will never ask you to read out a one-time password, PIN, or to transfer money to a “safe account.” Hang up and call back on the official number printed on your card or statement.
Report scam calls
Forward suspicious text messages to 7726 (SPAM) free of charge from any UK mobile, and report scam phone calls to Action Fraud. Reporting helps regulators build the evidence to take down number ranges quickly.
Two-factor everywhere
Add two-factor authentication (2FA) to your email, online banking, mobile-network account and any service holding payment details. App-based authenticators (Authy, Google Authenticator) are stronger than SMS for high-value accounts because they aren’t vulnerable to SIM-swap attacks.
If you think you’ve been targeted:
- Hang up immediately — do not press buttons to “speak to an operator,” as this can confirm your number is live.
- If you shared any banking detail, call your bank’s 159 short-code straight away — it connects you to your bank’s fraud team via a verified route.
- Change passwords on any account that used the same credentials, and enable 2FA where you can.
- Report the call to Action Fraud on 0300 123 2040 (England, Wales & Northern Ireland) or Police Scotland on 101 in Scotland.
Authoritative sources:Action Fraud · Ofcom — Scam calls and messages · NCSC — Phishing & scams · UK Finance.
