Is GTT-EMEA LTD the company that called me?

Not necessarily. Ofcom allocates number ranges to communications providers in blocks; GTT-EMEA LTD holds the range, but the number itself is used by one of their customers, or by a reseller's customer, or by whoever the number was later ported to. The range holder is the wholesale provider behind the number, not the caller.

How many UK numbers does GTT-EMEA LTD have?

Ofcom's current data allocates 471 number blocks to GTT-EMEA LTD, spread across 142 dialling codes and 4 number type(s). A block is a contiguous range of numbers, so the number of individual lines is much larger - but Ofcom publishes allocations, not usage, so nobody outside the operator knows how many are actually in service.

Why does the number checker show GTT-EMEA LTD for a number that isn't with them?

Because UK numbers can be ported. If a customer moved their number to a different provider, Ofcom's data still shows the original allocation to GTT-EMEA LTD. That is why we describe the result as the range holder rather than the operator of that specific line.

Are calls from GTT-EMEA LTD ranges scams?

No range is inherently a scam, and no range is inherently safe. Fraudsters spoof caller ID, so a number can be displayed by someone who has nothing to do with the range holder at all. Judge the call, not the number: never share passwords or one-time codes with an unexpected caller, and ring the organisation back on a number you find yourself.

Where does this GTT-EMEA LTD data come from?

Ofcom's published numbering data, which lists every UK number block, the provider it is allocated to and its allocation status. We rebuild our copy from Ofcom's weekly release, and show only what is in it - no user reports, ratings or guesses.

GTT-EMEA LTD Phone Numbers – Which UK Ranges They Hold

Range holder: GTT-EMEA LTD
Ofcom blocks allocated: 471
Dialling codes covered: 142
Number types held: 4
Largest single area: 01226 Barnsley
Data source: Ofcom numbering data

Who is GTT-EMEA LTD?

GTT-EMEA LTD is the name Ofcom records as the range holder for 471 UK number blocks. Ofcom publishes which communications provider each block of the national numbering plan was allocated to; it does not publish what those numbers are used for or who uses them, so everything on this page is the footprint, not the customer list.

Their allocation is a mix of geographic landline ranges across 142 dialling codes and non-geographic 03/08/09 ranges.

GTT-EMEA LTD’s footprint by number type

Number type	Allocated blocks
Geographic landlines (01/02)	467
Freephone (0800 / 0808)	2
084 service numbers	1
087 service numbers	1

Where GTT-EMEA LTD’s landline numbers are

GTT-EMEA LTD holds geographic (01/02) blocks in 142 dialling-code areas. These are the codes where they hold the most:

Dialling code	Area	Allocated blocks
`01226`	Barnsley	10
`01252`	Aldershot	10
`01256`	Basingstoke	10
`01276`	Camberley	10
`01344`	Bracknell	10
`01380`	Devizes	10
`01568`	Leominster	10
`01594`	Lydney	10
`01628`	Maidenhead	10
`01635`	Newbury	10
`01793`	Swindon	10
`01865`	Oxford	10

…plus smaller allocations in 130 more dialling codes.

Number ranges GTT-EMEA LTD holds

The ranges where GTT-EMEA LTD holds the largest allocations. Each one links to a full guide showing every provider in that range:

01226 5XXXXX · Barnsley01252 6XXXXX · Aldershot01256 2XXXXX · Basingstoke01276 7XXXXX · Camberley01344 5XXXXX · Bracknell01380 4XXXXX · Devizes01568 5XXXXX · Leominster01594 7XXXXX · Lydney01628 2XXXXX · Maidenhead01635 7XXXXX · Newbury01793 9XXXXX · Swindon01865 9XXXXX · Oxford01923 7XXXXX · Watford01458 6XXXXX · Glastonbury01494 2XXXXX · High Wycombe01702 7XXXXX · Southend-on-Sea01444 3XXXXX · Haywards Heath01474 8XXXXX · Gravesend01509 7XXXXX · Loughborough01737 5XXXXX · Redhill01784 7XXXXX · Staines01235 9XXXXX · Abingdon01323 5XXXXX · Eastbourne01329 5XXXXX · Fareham

…and 124 more ranges across the numbering plan.

What a call from a GTT-EMEA LTD range means

If our phone number checker shows GTT-EMEA LTD for a number, it means Ofcom allocated the block that number sits in to GTT-EMEA LTD. That is genuinely useful — it tells you the number is a real, allocated UK number of a known type — but three caveats matter:

It is not the caller. The person or business on the other end is a customer of GTT-EMEA LTD, or of a reseller buying numbers wholesale from them.
It may not even be their network any more. Numbers are ported between providers all the time, and Ofcom’s data keeps showing the original allocation.
Caller ID can be faked. Spoofing lets a fraudster display any number, including one from a GTT-EMEA LTD range they have nothing to do with.

Ofcom’s data shows the provider each number range was originally allocated to — not who holds an individual number today. Numbers are frequently moved (ported) between providers, and no public database reveals the person or business behind a specific number, so treat any service that claims to with suspicion.

Had an unexpected call from one of these numbers?

Check the number itself rather than the provider name. Our guide to the UK number ranges scammers use covers the patterns worth knowing, and who called me? walks through identifying a caller honestly. Forward scam texts free to 7726, and report scam calls to Action Fraud.

Other UK range holders

Operators with a similar-sized share of the numbering plan:

Verizon UK Limited · 517 blocks Core Telecom Limited · 484 blocksTGL Services (UK) Ltd · 480 blocksDynamic Mobile Billing Limited · 466 blocksCalltracks Limited · 464 blocksMedia Hawk Ltd · 450 blocks

All UK range holders › · All UK number ranges › · All UK area codes ›

Who is GTT-EMEA LTD?

Who is GTT-EMEA LTD?

GTT-EMEA LTD’s footprint by number type

Where GTT-EMEA LTD’s landline numbers are

Number ranges GTT-EMEA LTD holds

What a call from a GTT-EMEA LTD range means

Had an unexpected call from one of these numbers?

Other UK range holders

GTT-EMEA LTD — frequently asked questions

Choosing a provider for your business numbers?