Get a local 028 telephone number for your business and give customers a familiar Northern Ireland number to call. Our virtual 028 numbers route calls to your mobile, existing landline or VoIP phone system anywhere in the UK — no office, engineer visit or new hardware required — and cover the whole of Northern Ireland, from Belfast to Derry/Londonderry, Lisburn and beyond, all under one area code.
Your virtual 028 number isn't tied to a particular desk or phone. Calls can be routed to your mobile, landline or VoIP system wherever you're based — whether you're a sole trader, a national business opening a Northern Ireland territory, or a remote team serving customers across Belfast and beyond. No hardware, no engineer visit, no need to relocate.
A quick answer before the detail — what you're actually buying, and how it fits into the wider phone system.
A 028 number is a UK geographic number — allocated by Ofcom to Northern Ireland as a whole. Unlike most UK area codes, which cover a single city or a small cluster of towns, 028 covers the entire region: Belfast, Derry/Londonderry, Lisburn, Newry, Armagh, Bangor and every other Northern Ireland town share the same code, distinguished only by the local digits that follow. It's a nice parallel to Northern Ireland's postcodes, which similarly all begin with the single prefix BT, regardless of which town or city they're in.
What makes a 028 number from T2K a virtual telephone number — sometimes called a cloud phone number or hosted phone number — is how it's delivered. Instead of running over a physical Openreach line into one building, it's a VoIP number (or SIP number) that routes calls over the internet to wherever you actually are: a mobile, an existing office line, a softphone, or a platform like Microsoft Teams. This is also the direction the whole industry is moving in ahead of the PSTN switch-off, when the UK's traditional copper phone network is retired in favour of exactly this kind of cloud-based calling.
In practice, that means a company, practice, agency or sole trader anywhere in Northern Ireland — or trading into it — can hold a genuine local number without a local office, a phone line being physically installed, or any hardware beyond what they already use.
A local business line is one of the simplest ways to appear established across Northern Ireland — and it's not just for companies physically in the region. New businesses, expanding organisations, franchises, multi-location retailers and remote or home-based teams all buy 028 numbers for the same core reasons: better answer rates, local advertising and Google Business Profile credibility, and stronger confidence from existing customers who already recognise the area code.
A local 028 number gives customers a familiar Northern Ireland number to call, even if your team works from a different city entirely. Northern Ireland is home to more than 1.8 million people — a local prefix can help customers recognise your business as serving the whole region, not just Belfast.
Whether you need a single new telephone number to test the Northern Ireland market, or want to bulk buy a batch of local 028 phone numbers for a distributed sales team, T2K provisions numbers with routing live within 24 hours of ordering.
A local phone number works a little differently depending on what you do. Some common examples:
A local 028 number isn't tied to a desk phone or a Belfast address — it's hosted in the cloud and routes calls to wherever your business actually is.
Choose an available 028 number, tell us where you'd like calls routed — your mobile, an existing landline, or a VoIP system — and we'll have it live within 24 hours.
Everything you'd expect from a modern cloud telephone number, included as standard or available as an add-on:
Purchasing a new local or bulk telephone number takes a few minutes — here's exactly how it works.
A single new 028 number for one business, or a bulk batch of local numbers for a team, campaign, or multiple brands.
Your mobile, an existing landline, or a VoIP platform such as Gamma Horizon or 3CX — calls can also be split across multiple destinations.
Voicemail, call recording, opening-hours routing, or a welcome greeting — all optional, all configurable from day one.
No engineer visit and no new hardware required. Most 028 numbers are live and routing calls within 24 hours of ordering.
Transparent pricing whether you need one new local number or a bulk order across your whole team.
A single new 028 telephone number with call forwarding to any UK mobile or landline.
A full-featured local number with call routing, analytics, and VoIP-ready integration.
Bulk buy 028 telephone numbers for outbound teams, tracking campaigns, or multiple business units.
A 028 telephone number is available for use anywhere, but is traditionally associated with these BT postcode districts — every postcode in Northern Ireland begins with BT, regardless of town or city. Ranges below are indicative rather than an exhaustive list, so get in touch if you'd like us to confirm coverage for a specific postcode.
Full breakdown of coverage on our Belfast phone systems page →
From Belfast to Derry/Londonderry, Lisburn, Newry, Armagh and Bangor, a single 028 number covers every town and city in Northern Ireland — with no need for separate numbers or accounts. Looking for a number in Great Britain too?
Need a number for a different UK area code? Search every dialling code →
New local numbers live within 24 hours. Bulk orders welcome. No local office required.
📞 Call us on 0808 202 3200 — Mon–Fri, 9am–5pm
Tell us a little about what you need and we'll come back to you with pricing — usually the same day.
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