01204 Area Code — Bolton, Bury & Farnworth
01204 is the UK dialling code for Bolton in Borough of Bolton, also serving Bury, Farnworth and Walkden, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 827 distinct 01204 numbers across 2,691 public lookups.
Advertisement
Quick facts
Area code
01204
Location
Bolton
County
Borough of Bolton
Region
North West England
Number type
Geographic landline
Number format
01204 XXX XXX
Operators serving
8+
Call cost
Standard rate
About the 01204 dialling code
01204 is the UK geographic dialling code for Bolton, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Bolton area.
A full Bolton number is normally written as 01204 XXXXXX. You can dial the local part on its own from within the same area, or the full number from anywhere in the UK.
Because of UK number portability and internet calling, a 01204 number no longer guarantees the caller is physically in Bolton. Fraudsters also "spoof" local codes like 01204 so an unknown call looks like a nearby business or neighbour — so treat an unexpected call on what is actually said, not on the area code alone.
Map of the 01204 dialling area
The marker shows Bolton; the shaded circle is an approximate indication of the area the 01204 code serves — exact Ofcom charging-area boundaries are irregular and don't follow a neat radius.
Map data © OpenStreetMap contributors. View larger map
Areas typically served by 01204
Settlements in and around the Bolton dialling area that typically use 01204 numbers. Approximate — Ofcom charging-area boundaries don't follow town or county lines exactly, and properties near a boundary may take a neighbouring code.
Calling 01204 from abroad
From outside the UK, dial your international access prefix, then the UK country code 44, then 1204 (the area code without its leading zero) and the local number.
| Calling from | Dial |
|---|---|
| United States & Canada | 011 44 1204 … |
| Europe / most of the world | 00 44 1204 … |
| Australia | 0011 44 1204 … |
| Any mobile phone | +44 1204 … |
History of the 01204 code
The code was 0204 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01204.
Top searched 01204 numbers
These are the 01204 numbers most-looked-up by visitors to our number checker. Click any number to see its full lookup page with risk-level, range holder, and community reports.
| Number | Searches | Last looked up |
|---|---|---|
| 01204 920712 | 54 | 10 Jul 2026 |
| 01204 920674 | 50 | 30 Jun 2026 |
| 01204 920707 | 36 | 4 Jul 2026 |
| 01204 920744 | 29 | 9 Jul 2026 |
| 01204 920740 | 29 | 17 Jun 2026 |
| 01204 920737 | 27 | 8 Jul 2026 |
| 01204 920731 | 26 | 2 Jul 2026 |
| 01204 920692 | 25 | 14 Jun 2026 |
| 01204 920725 | 23 | 17 Jun 2026 |
| 01204 920742 | 22 | 16 Jun 2026 |
| 01204 311594 | 22 | 10 Jun 2026 |
| 01204 920776 | 20 | 7 Jul 2026 |
| 01204 920815 | 19 | 25 Jun 2026 |
| 01204 920736 | 17 | 6 Jul 2026 |
| 01204 920788 | 17 | 3 Jul 2026 |
| 01204 920798 | 17 | 16 Jun 2026 |
| 01204 920741 | 17 | 8 Jun 2026 |
| 01204 920696 | 17 | 6 Jun 2026 |
| 01204 920683 | 16 | 10 Jul 2026 |
| 01204 920799 | 16 | 2 Jul 2026 |
Is a call from 01204 safe?
Most 01204 calls are ordinary local calls from Bolton homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01204 prefix so you are more likely to answer. Never share bank details, passwords or one-time security codes with an unexpected caller, even when the number looks local — hang up and call the organisation back on a number you have verified yourself.
To call a 01204 (Bolton) number from outside the UK, drop the leading zero and dial +44 1204 followed by the local number.
Operators serving Bolton
These UK communications providers have been allocated 01204 number blocks by Ofcom. The number of blocks per operator gives a rough sense of how widely each provider serves this area.
| Provider (Ofcom-allocated) | Allocated blocks |
|---|---|
| BT | 89 |
| Gamma Telecom Holdings Limited | 29 |
| Vodafone Ltd (C&W) | 22 |
| Sky UK Limited | 21 |
| Virgin Media Limited | 17 |
| TalkTalk Communications Limited | 16 |
| Magrathea Telecommunications Limited | 8 |
| GCI Network Solutions Limited | 8 |
Ofcom number ranges on 01204
Ofcom's National Numbering Plan lists 496 number blocks under 01204, of which 349 are allocated to 120 communications providers. The first allocated blocks are shown below — look up any full number with the number checker to see its exact range holder.
| Number block | Status | Range holder (Ofcom-allocated) |
|---|---|---|
01204200… | Allocated | Localphone Limited |
01204201… | Allocated | Voiceflex Limited |
01204202… | Allocated | (AQ) LIMITED |
01204203… | Allocated | Orange Business Holdings UK Limited |
01204204… | Allocated | Net-Work Internet Ltd |
01204205… | Allocated | Nationwide Telephone Assistance Ltd |
01204206… | Allocated | VoIP-Un Limited |
01204207… | Allocated | Digital Space Group Limited |
01204208… | Allocated | Voxbone SA |
01204209… | Allocated | Telecom2 Limited |
01204210… | Allocated | Gamma Telecom Holdings Limited |
01204211… | Allocated | TelXL Limited |
Showing 12 of 349 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.
Common scam patterns reported in Bolton
Categories most-commonly tagged on user-submitted reports for 01204 numbers in our community comments.
- silent — 2 reports
- scam — 1 report
- telemarketing — 1 report
- unknown — 1 report
- legit — 1 report
How to block and report 01204 spam calls
Block or report 01204
- You can block 01204 directly from your recent-calls list on iPhone or Android, and forward scam texts free to 7726.
- Scam or fraud calls should be reported to Action Fraud (0300 123 2040) or Police Scotland (101); persistent marketing calls to the ICO / TPS.
Full step-by-step instructions for every phone, network-level blocking and all UK reporting routes are in our guide: How to block and report unwanted calls in the UK.
How to stop unwanted calls for good
Blocking 01204 numbers stops that one number, but determined nuisance callers simply switch numbers. Silencing unknown callers, enabling your network's free spam shield and registering with the TPS cut the volume across the board — our canonical guide walks through each step: How to block and report unwanted calls in the UK.
Frequently asked questions about the 01204 code
Where is the 01204 area code?
The 01204 area code is allocated by Ofcom to Bolton in Borough of Bolton, United Kingdom. It is a geographic UK landline dialling code under the National Telephone Numbering Plan. The surrounding dialling area also takes in Bury, Farnworth, Walkden and nearby villages.
Is 01204 always a Bolton number?
Numbers with the 01204 prefix were originally allocated by Ofcom to Bolton. With UK number portability and VoIP allowing geographic relocation while keeping the same number, the call origin can differ from the original area, but the prefix's official assigned location remains Bolton.
How do I block 01204 spam calls?
On iPhone, tap the (i) next to the number in Recents and choose Block this Caller. On Android, long-press the number in Recents and choose Block. To prevent unknown 01204 numbers ringing, enable Settings → Phone → Silence Unknown Callers (iPhone) or your dialler's spam filter (Android). Forward spam texts to 7726 free of charge.
How much does a 01204 call cost?
Calls to UK 01204 geographic numbers are charged at your provider's standard rate and are usually included in inclusive minutes on any modern landline or mobile plan.
Neighbouring dialling codes
Codes covering areas around Bolton — useful when a caller is nearby but outside the 01204 boundary.
Living in or moving to Bolton?
Our free postcode reports cover house prices, crime, broadband and schools for the districts around Bolton.
Check another UK number
Have the full 10- or 11-digit number? The UK Phone Number Checker shows the Ofcom range holder, risk level, and any community reports for that specific number.