01277 Area Code — Brentwood, Shenfield & Ingatestone
01277 is the UK dialling code for Brentwood in Essex, also serving Shenfield, Ingatestone and Ingrave, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 427 distinct 01277 numbers across 583 public lookups.
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Quick facts
Area code
01277
Location
Brentwood
County
Essex
Region
East of England
Number type
Geographic landline
Number format
01277 XXX XXX
Operators serving
8+
Call cost
Standard rate
About the 01277 dialling code
01277 is the UK geographic dialling code for Brentwood, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Brentwood area.
A full Brentwood number is normally written as 01277 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 01277 number no longer guarantees the caller is physically in Brentwood. Fraudsters also "spoof" local codes like 01277 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 01277 dialling area
The marker shows Brentwood; the shaded circle is an approximate indication of the area the 01277 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 01277
Settlements in and around the Brentwood dialling area that typically use 01277 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 01277 from abroad
From outside the UK, dial your international access prefix, then the UK country code 44, then 1277 (the area code without its leading zero) and the local number.
| Calling from | Dial |
|---|---|
| United States & Canada | 011 44 1277 … |
| Europe / most of the world | 00 44 1277 … |
| Australia | 0011 44 1277 … |
| Any mobile phone | +44 1277 … |
History of the 01277 code
The code was 0277 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01277.
In the letter-dialling era the code had the mnemonic BR7 — on an old rotary dial, the letters BR (from Brentwood) sat on the same holes as the digits 277, so subscribers literally dialled the start of the town's name.
Top searched 01277 numbers
These are the 01277 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 |
|---|---|---|
| 01277 235228 | 14 | 7 Jul 2026 |
| 01277 598900 | 10 | 7 Jul 2026 |
| 01277 588798 | 8 | 17 Jun 2026 |
| 01277 588440 | 7 | 23 Jun 2026 |
| 01277 588800 | 6 | 8 Jul 2026 |
| 01277 532743 | 6 | 4 Jul 2026 |
| 01277 588434 | 6 | 7 Jun 2026 |
| 01277 588785 | 5 | 2 Jul 2026 |
| 01277 588794 | 5 | 28 Jun 2026 |
| 01277 532744 | 5 | 24 Jun 2026 |
| 01277 814336 | 5 | 18 Jun 2026 |
| 01277 588793 | 4 | 9 Jul 2026 |
| 01277 679042 | 4 | 3 Jul 2026 |
| 01277 239941 | 4 | 2 Jul 2026 |
| 01277 690242 | 4 | 2 Jul 2026 |
| 01277 588438 | 4 | 21 Jun 2026 |
| 01277 588435 | 4 | 21 Jun 2026 |
| 01277 655555 | 4 | 20 Jun 2026 |
| 01277 588791 | 4 | 17 Jun 2026 |
| 01277 588795 | 4 | 16 Jun 2026 |
Is a call from 01277 safe?
Most 01277 calls are ordinary local calls from Brentwood homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01277 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 01277 (Brentwood) number from outside the UK, drop the leading zero and dial +44 1277 followed by the local number.
Operators serving Brentwood
These UK communications providers have been allocated 01277 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 | 27 |
| Vodafone Ltd (C&W) | 14 |
| Virgin Media Limited | 9 |
| Gamma Telecom Holdings Limited | 8 |
| TalkTalk Communications Limited | 5 |
| Colt Technology Services | 4 |
| Sky UK Limited | 4 |
| GCI Network Solutions Limited | 4 |
Ofcom number ranges on 01277
Ofcom's National Numbering Plan lists 415 number blocks under 01277, of which 187 are allocated to 105 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) |
|---|---|---|
0127720… | Allocated | BT |
0127721… | Allocated | BT |
0127722… | Allocated | BT |
0127723… | Allocated | BT |
0127724… | Allocated | BT |
0127725… | Allocated | BT |
0127726… | Allocated | BT |
0127728… | Allocated | Gamma Telecom Holdings Limited |
01277290… | Allocated | Linear Telecoms Limited |
01277291… | Allocated | Internexus Networks Limited |
01277293… | Allocated | Bicom Systems EURL |
01277294… | Allocated | API Telecom Limited |
Showing 12 of 187 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.
How to block and report 01277 spam calls
Block or report 01277
- You can block 01277 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 01277 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 01277 code
Where is the 01277 area code?
The 01277 area code is allocated by Ofcom to Brentwood in Essex, United Kingdom. It is a geographic UK landline dialling code under the National Telephone Numbering Plan. The surrounding dialling area also takes in Shenfield, Ingatestone, Ingrave and nearby villages.
Is 01277 always a Brentwood number?
Numbers with the 01277 prefix were originally allocated by Ofcom to Brentwood. 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 Brentwood.
How do I block 01277 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 01277 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 01277 call cost?
Calls to UK 01277 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 Brentwood — useful when a caller is nearby but outside the 01277 boundary.
Living in or moving to Brentwood?
Our free postcode reports cover house prices, crime, broadband and schools for the districts around Brentwood.
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.