Range holder · Downham Market

Windsor Telecom Limited in Downham Market

01366 numbering ranges allocated by Ofcom

About Windsor Telecom Limited’s Downham Market allocation

When Windsor Telecom Limited is the range holder for +44 1366 it means Ofcom recorded Windsor Telecom Limited as the provider entitled to issue numbers from these blocks when they were first allocated under the UK National Telephone Numbering Plan. 3 Downham Market-facing blocks sit against Windsor Telecom Limited in the current Ofcom snapshot, each of which can carry up to ten thousand individual digits available for assignment to end customers.

Downham Market’s Norfolk telecoms estate is shaped by Downham Market's residential and business catchment: a dense urban exchange typically hosts allocations from several national operators in parallel, which is why you see Windsor Telecom Limited’s blocks alongside other range holders on the same 01366 code. Local switching capacity, historic Openreach exchange footprints, and Windsor Telecom Limited’s wholesale routing arrangements all influence which blocks land in Downham Market rather than elsewhere on the national plan.

Treat this allocation as a starting point, not a verdict on any specific caller. UK numbers are portable, so the current carrier on a given 01366 digit string may differ from the range holder shown — read Range Holder vs current provider for the distinction, and How Ofcom allocates UK phone numbers for the wider context behind the table below.

Windsor Telecom Limited on 01366: by the numbers

Downham Market blocks: 3
In active service: 100%
Share of 01366: 0%
Holders on code: 90

Of the 3 blocks Windsor Telecom Limited runs on the 01366 code, 3 (100%) are marked as actively allocated in the current Ofcom snapshot.

By number family these blocks are 100% geographic (01 / 02) — a profile that tells you what kind of caller a Downham Market Windsor Telecom Limited number is likely to be before you even dial it back.

Windsor Telecom Limited runs 3 of the 840 allocated blocks on the 01366 dialling code — roughly 0% of Downham Market’s mapped allocation, shared with 89 other range holders. Most are listed as "Allocated", which means the block is currently in active service with a communications provider.

Allocated ranges

Windsor Telecom Limited blocks on the 01366 (Downham Market) dialling code.

Prefix	Status
+44 13666	Allocated
+44 1366646	Allocated
+44 1366646	Allocated

Quick links

FAQs about Windsor Telecom Limited on 01366

Why does Windsor Telecom Limited appear on Downham Market (01366) numbers?

Windsor Telecom Limited is listed in Ofcom's UK Numbering Data feed as the originally-allocated range holder for 3 number blocks on the 01366 dialling code, which covers Downham Market. That allocation pre-dates any individual customer — it simply means Ofcom recognised Windsor Telecom Limited as the wholesale operator entitled to issue those digits when the block was first allocated.

Are calls from a Downham Market Windsor Telecom Limited-allocated number safe?

An Ofcom allocation only tells you which provider the block was issued to; it is not a safety verdict. UK numbers can be ported between networks, and any UK area code can be spoofed by an overseas caller. Paste the specific 01366 number into the lookup above to combine the Windsor Telecom Limited range data with a live AI internet check for forum reports, scam databases, and business listings.

Has Windsor Telecom Limited's 01366 block been updated recently?

Yes — the table above is sourced from Ofcom's public UK Numbering Data feed, which we re-ingest every week (typically Wednesday). Any block that has been re-assigned, withdrawn or marked free will appear with its new status on the next refresh. Numbers within an allocated block can still be ported to another carrier in between Ofcom updates; see our range-holder-vs-current-provider guide for the distinction.