01646 Area Code — Milford Haven, Pembroke Dock & Steynton
01646 is the UK dialling code for Milford Haven in Pembrokeshire, also serving Pembroke Dock, Steynton and Pembroke, allocated by Ofcom under the National Telephone Numbering Plan. Our database has tracked 166 distinct 01646 numbers across 197 public lookups.
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Quick facts
Area code
01646
Location
Milford Haven
County
Pembrokeshire
Region
Wales
Number type
Geographic landline
Number format
01646 XXX XXX
Operators serving
8+
Call cost
Standard rate
About the 01646 dialling code
01646 is the UK geographic dialling code for Milford Haven, allocated by Ofcom under the National Telephone Numbering Plan. It is used by landlines — and increasingly VoIP lines — registered to the Milford Haven area.
A full Milford Haven number is normally written as 01646 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 01646 number no longer guarantees the caller is physically in Milford Haven. Fraudsters also "spoof" local codes like 01646 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 01646 dialling area
The marker shows Milford Haven; the shaded circle is an approximate indication of the area the 01646 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 01646
Settlements in and around the Milford Haven dialling area that typically use 01646 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 01646 from abroad
From outside the UK, dial your international access prefix, then the UK country code 44, then 1646 (the area code without its leading zero) and the local number.
| Calling from | Dial |
|---|---|
| United States & Canada | 011 44 1646 … |
| Europe / most of the world | 00 44 1646 … |
| Australia | 0011 44 1646 … |
| Any mobile phone | +44 1646 … |
History of the 01646 code
The code was 0646 until PhONEday, 16 April 1995, when a "1" was inserted after the leading zero to create 01646.
In the letter-dialling era the code had the mnemonic MI6 — on an old rotary dial, the letters MI (from Milford Haven) sat on the same holes as the digits 646, so subscribers literally dialled the start of the town's name.
Top searched 01646 numbers
These are the 01646 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 |
|---|---|---|
| 01646 473010 | 20 | 5 Jun 2026 |
| 01646 600305 | 3 | 5 Jul 2026 |
| 01646 400947 | 2 | 9 Jul 2026 |
| 01646 831893 | 2 | 7 Jul 2026 |
| 01646 797344 | 2 | 6 Jul 2026 |
| 01646 400885 | 2 | 3 Jul 2026 |
| 01646 400906 | 2 | 2 Jul 2026 |
| 01646 600335 | 2 | 2 Jul 2026 |
| 01646 400913 | 2 | 1 Jul 2026 |
| 01646 797316 | 2 | 1 Jul 2026 |
| 01646 690183 | 2 | 1 Jul 2026 |
| 01646 400888 | 2 | 28 Jun 2026 |
| 01646 649886 | 1 | 9 Jul 2026 |
| 01646 79731 | 1 | 9 Jul 2026 |
| 01646 600342 | 1 | 9 Jul 2026 |
| 01646 473051 | 1 | 9 Jul 2026 |
| 01646 284505 | 1 | 9 Jul 2026 |
| 01646 649884 | 1 | 8 Jul 2026 |
| 01646 831836 | 1 | 8 Jul 2026 |
| 01646 284507 | 1 | 8 Jul 2026 |
Is a call from 01646 safe?
Most 01646 calls are ordinary local calls from Milford Haven homes and businesses. The main risk to be aware of is "neighbour spoofing", where a scammer fakes a local 01646 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 01646 (Milford Haven) number from outside the UK, drop the leading zero and dial +44 1646 followed by the local number.
Operators serving Milford Haven
These UK communications providers have been allocated 01646 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 | 12 |
| TalkTalk Communications Limited | 5 |
| Sky UK Limited | 3 |
| Lumen Technologies UK Limited | 2 |
| Bink Networks Ltd | 2 |
| GCI Network Solutions Limited | 2 |
| TTNC Limited | 1 |
| IP Voice Networks Ltd | 1 |
Ofcom number ranges on 01646
Ofcom's National Numbering Plan lists 388 number blocks under 01646, of which 110 are allocated to 91 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) |
|---|---|---|
0164620… | Allocated | TTNC Limited |
01646210… | Allocated | Number Services Ltd. |
01646213… | Allocated | Adepteo Limited |
01646214… | Allocated | IP Voice Networks Ltd |
01646215… | Allocated | Zapappi Ltd |
01646216… | Allocated | Colt Technology Services |
01646217… | Allocated | Sky UK Limited |
01646218… | Allocated | EVE CONNECT LTD |
01646219… | Allocated | Fuse 2 Communications Ltd |
0164622… | Allocated | TelNG Limited |
0164623… | Allocated | Voiceflex Limited |
0164624… | Allocated | Barritel Limited |
Showing 12 of 110 allocated blocks. Source: Ofcom telephone numbering data, updated weekly.
How to block and report 01646 spam calls
Block or report 01646
- You can block 01646 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 01646 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 01646 code
Where is the 01646 area code?
The 01646 area code is allocated by Ofcom to Milford Haven in Pembrokeshire, United Kingdom. It is a geographic UK landline dialling code under the National Telephone Numbering Plan. The surrounding dialling area also takes in Pembroke Dock, Steynton, Pembroke and nearby villages.
Is 01646 always a Milford Haven number?
Numbers with the 01646 prefix were originally allocated by Ofcom to Milford Haven. 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 Milford Haven.
How do I block 01646 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 01646 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 01646 call cost?
Calls to UK 01646 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 Milford Haven — useful when a caller is nearby but outside the 01646 boundary.
Living in or moving to Milford Haven?
Our free postcode reports cover house prices, crime, broadband and schools for the districts around Milford Haven.
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.