01770 Area Code — Isle of Arran, Brodick & Lamlash

01770 is the UK dialling code for Isle of Arran in North Ayrshire, also serving Brodick, Lamlash, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 25 distinct 01770 numbers across 35 public lookups.

Quick facts

About the 01770 dialling code

01770 is the UK geographic dialling code for Isle of Arran, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Isle of Arran area.

A full Isle of Arran number is normally written as 01770 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 01770 number no longer guarantees the caller is physically in Isle of Arran. Fraudsters also "spoof" local codes like 01770 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 01770 dialling area

The marker shows Isle of Arran; the shaded circle is an approximate indication of the area the 01770 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 01770

Settlements in and around the Isle of Arran dialling area that typically use 01770 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 01770 from abroad

From outside the UK, dial your international access prefix, then the UK country code 44, then 1770 (the area code without its leading zero) and the local number.

History of the 01770 code

The code was 0770 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01770.

Top searched 01770 numbers

These are the 01770 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.

Is a call from 01770 safe?

Most 01770 calls are ordinary local calls from Isle of Arran homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01770 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 01770 (Isle of Arran) number from outside the UK, drop the leading zero and dial +44 1770 followed by the local number.

Operators serving Isle of Arran

These UK communications providers have been allocated 01770 number blocks by Ofcom. The number of blocks per operator gives a rough sense of how widely each provider serves this area.

Ofcom number ranges on 01770

Ofcom's National Numbering Plan lists 433 number blocks under 01770, of which 93 are allocated to 77 communications providers. The first allocated blocks are shown below — look up any full number with the number checker to see its exact range holder.

Showing 12 of 93 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.

How to block and report 01770 spam calls

Block or report 01770

• You can block 01770 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.

Frequently asked questions about the 01770 code

Neighbouring dialling codes

Codes covering areas around Isle of Arran — useful when a caller is nearby but outside the 01770 boundary.

Living in or moving to Isle of Arran?

Our free postcode reports cover house prices, crime, broadband and schools for the districts around Isle of Arran.

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.