Range holder · Dumfries
Invoco Ltd in Dumfries
01387 numbering ranges allocated by Ofcom
About Invoco Ltd’s Dumfries allocation
When Invoco Ltd is the range holder for +44 1387 it means Ofcom recorded Invoco Ltd as the provider entitled to issue numbers from these blocks when they were first allocated under the UK National Telephone Numbering Plan. 4 Dumfries-facing blocks sit against Invoco Ltd in the current Ofcom snapshot, each of which can carry up to ten thousand individual digits available for assignment to end customers.
Dumfries’s Scotland telecoms estate is shaped by Dumfries's residential and business catchment: a dense urban exchange typically hosts allocations from several national operators in parallel, which is why you see Invoco Ltd’s blocks alongside other range holders on the same 01387 code. Local switching capacity, historic Openreach exchange footprints, and Invoco Ltd’s wholesale routing arrangements all influence which blocks land in Dumfries 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 01387 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.
Invoco Ltd on 01387: by the numbers
- Dumfries blocks
- 4
- In active service
- 100%
- Share of 01387
- 0%
- Holders on code
- 95
Of the 4 blocks Invoco Ltd runs on the 01387 code, 4 (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 Dumfries Invoco Ltd number is likely to be before you even dial it back.
Invoco Ltd runs 4 of the 1,092 allocated blocks on the 01387 dialling code — roughly 0% of Dumfries’s mapped allocation, shared with 94 other range holders. Most are listed as "Allocated", which means the block is currently in active service with a communications provider.
Allocated ranges
Invoco Ltd blocks on the 01387 (Dumfries) dialling code.
| Prefix | Status |
|---|---|
| +44 13873514 | Allocated |
| +44 13873514 | Allocated |
| +44 1387435 | Allocated |
| +44 1387435 | Allocated |
Quick links
- Invoco LtdAll Invoco Ltd ranges
- 01387 DumfriesAll numbers on 01387
- DumfriesMore on Dumfries
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- All range holdersEvery Ofcom-listed provider
- Lookup any UK numberFree reverse phone lookup
FAQs about Invoco Ltd on 01387
Why does Invoco Ltd appear on Dumfries (01387) numbers?
Invoco Ltd is listed in Ofcom's UK Numbering Data feed as the originally-allocated range holder for 4 number blocks on the 01387 dialling code, which covers Dumfries. That allocation pre-dates any individual customer — it simply means Ofcom recognised Invoco Ltd as the wholesale operator entitled to issue those digits when the block was first allocated.
Are calls from a Dumfries Invoco Ltd-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 01387 number into the lookup above to combine the Invoco Ltd range data with a live AI internet check for forum reports, scam databases, and business listings.
Has Invoco Ltd's 01387 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.