01556 Area Code — Castle Douglas & Dalbeattie

01556 is the UK dialling code for Castle Douglas in Dumfries and Galloway, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 109 distinct 01556 numbers across 142 public lookups.

Quick facts

About the 01556 dialling code

01556 is the UK geographic dialling code for Castle Douglas, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Castle Douglas area.

A full Castle Douglas number is normally written as 01556 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 01556 number no longer guarantees the caller is physically in Castle Douglas. Fraudsters also "spoof" local codes like 01556 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 01556 dialling area

The marker shows Castle Douglas; the shaded circle is an approximate indication of the area the 01556 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 01556

Settlements in and around the Castle Douglas dialling area that typically use 01556 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 01556 from abroad

From outside the UK, dial your international access prefix, then the UK country code 44, then 1556 (the area code without its leading zero) and the local number.

History of the 01556 code

The code was 0556 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01556.

Top searched 01556 numbers

These are the 01556 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 01556 safe?

Most 01556 calls are ordinary local calls from Castle Douglas homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01556 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 01556 (Castle Douglas) number from outside the UK, drop the leading zero and dial +44 1556 followed by the local number.

Operators serving Castle Douglas

These UK communications providers have been allocated 01556 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 01556

Ofcom's National Numbering Plan lists 406 number blocks under 01556, of which 101 are allocated to 82 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 101 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.

How to block and report 01556 spam calls

Block or report 01556

• You can block 01556 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 01556 code

Neighbouring dialling codes

Codes covering areas around Castle Douglas — useful when a caller is nearby but outside the 01556 boundary.

Living in or moving to Castle Douglas?

Our free postcode reports cover house prices, crime, broadband and schools for the districts around Castle Douglas.

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.