0284 area code: 5 places numbers starting 028 4
0284 is not a separate area code. It is 028 followed by local numbers starting 4. The blocks cover 5 places.
2,742,000 numbers are allocated in 429 blocks to 82 listed holders (Ofcom, 14 Oct 2026).
Check a 0284 number privately
Number ranges registered under 028 4
| Number range | Listed holder | Status | Allocation date |
|---|---|---|---|
| 028 40000000 – 028 40009999 | Flextel Limited | Allocated | 2005-11-15 |
| 028 40020000 – 028 40029999 | TelNG Limited | Allocated | 2007-03-02 |
| 028 40030000 – 028 40039999 | AQL Wholesale Ltd | Allocated | 2008-01-03 |
| 028 40040000 – 028 40049999 | Localphone Limited | Allocated | 2007-05-23 |
| 028 40050000 – 028 40059999 | Mars Communications Limited | Allocated | 2009-02-03 |
| 028 40060000 – 028 40069999 | Nodemax Limited | Allocated | 2008-07-07 |
| 028 40070000 – 028 40079999 | Served Up Limited | Allocated | 2008-10-09 |
| 028 40080000 – 028 40089999 | Digital Space Group Limited | Allocated | 2008-06-09 |
| 028 40100000 – 028 40109999 | Voiceflex Limited | Allocated | 2007-09-27 |
| 028 40110000 – 028 40119999 | IOVOX Limited | Allocated | 2013-08-21 |
| 028 40120000 – 028 40129999 | Solutios Limited | Allocated | 2008-11-27 |
| 028 40130000 – 028 40139999 | Nexus Telecommunications Limited | Allocated | 2009-10-08 |
| 028 40150000 – 028 40159999 | Andrews & Arnold (Numbers) Ltd | Allocated | 2009-04-16 |
| 028 40170000 – 028 40179999 | Telecoms World Limited | Allocated | 2009-07-02 |
| 028 40180000 – 028 40189999 | Telecom2 Limited | Allocated | 2009-09-10 |
| 028 40190000 – 028 40199999 | CFL Communications Ltd | Allocated | 2009-07-21 |
| 028 40200000 – 028 40209999 | VoIP-Un Limited | Allocated | 2007-11-08 |
| 028 40210000 – 028 40219999 | Atomstream Limited | Allocated | 2010-04-15 |
| 028 40230000 – 028 40239999 | TalkTalk Communications Limited | Allocated | 2007-10-05 |
| 028 40240000 – 028 40240999 | Adepteo Limited | Allocated | 2016-10-19 |
| 028 40241000 – 028 40241999 | IP Voice Networks Ltd | Allocated | 2017-09-20 |
| 028 40242000 – 028 40242999 | Fuse 2 Communications Ltd | Allocated | 2017-07-12 |
| 028 40243000 – 028 40243999 | DIDWW Ireland Limited | Allocated | 2019-01-18 |
| 028 40244000 – 028 40244999 | Number Services Ltd. | Allocated | 2018-11-22 |
| 028 40245000 – 028 40245999 | Zapappi Ltd | Allocated | 2018-01-05 |
| 028 40246000 – 028 40246999 | Dial 9 Communications Limited | Allocated | 2019-12-09 |
| 028 40247000 – 028 40247999 | 24 Seven Cloud Communications Ltd | Allocated | 2020-01-13 |
| 028 40248000 – 028 40248999 | Colt Technology Services | Allocated | 2018-01-16 |
| 028 40249000 – 028 40249999 | Mi Telecom Limited | Allocated | 2020-07-03 |
| 028 40260000 – 028 40269999 | Vodafone Ltd (C&W) | Allocated | 2013-09-10 |
| 028 40270000 – 028 40270999 | VOXYONDER NETWORK SERVICES UK LTD | Allocated | 2020-09-16 |
| 028 40271000 – 028 40271999 | INTELLIGENT EXCHANGES LIMITED | Allocated | 2026-01-26 |
| 028 40272000 – 028 40272999 | Reality Network Services Limited | Allocated | 2020-12-22 |
| 028 40274000 – 028 40274999 | Eircom (UK) Limited | Allocated | 2021-02-25 |
| 028 40279000 – 028 40279999 | Bink Networks Ltd | Allocated | 2023-03-27 |
| 028 40300000 – 028 40309999 | TTNC Limited | Allocated | 2013-11-14 |
| 028 40310000 – 028 40319999 | 8x8 Communications CX Solutions LIMITED | Allocated | 2011-05-12 |
| 028 40320000 – 028 40329999 | TalkTalk Communications Limited | Allocated | 2013-02-11 |
| 028 40330000 – 028 40339999 | Gamma Telecom Holdings Limited | Allocated | 2005-06-29 |
| 028 40350000 – 028 40359999 | Internexus Networks Limited | Allocated | 2011-11-22 |
| 028 40360000 – 028 40369999 | VoiceHost Limited | Allocated | 2012-02-23 |
| 028 40370000 – 028 40379999 | Spitfire Network Services Limited | Allocated | 2006-11-29 |
| 028 40380000 – 028 40389999 | 8x8 Communications UK Limited | Allocated | 2012-04-19 |
| 028 40400000 – 028 40409999 | Inet Telecoms Ltd (Voipfone) | Allocated | 2011-10-21 |
| 028 40420000 – 028 40429999 | Ziron Limited | Allocated | 2012-08-21 |
| 028 40430000 – 028 40439999 | Content Guru Limited | Allocated | 2012-10-11 |
| 028 40450000 – 028 40459999 | Hello Telecom (UK) Limited | Allocated | 2012-12-27 |
| 028 40460000 – 028 40460999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40461000 – 028 40461999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40462000 – 028 40462999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40463000 – 028 40463999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40464000 – 028 40464999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40465000 – 028 40465999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40466000 – 028 40466999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40467000 – 028 40467999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40468000 – 028 40468999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40469000 – 028 40469999 | GCI Network Solutions Limited | Allocated | 2024-02-26 |
| 028 40470000 – 028 40479999 | Simwood eSMS Limited | Allocated | 2013-04-08 |
| 028 40490000 – 028 40499999 | XoverX Ltd | Allocated | 2013-05-01 |
| 028 40500000 – 028 40509999 | IV Response Limited | Allocated | 2005-07-25 |
| 028 40510000 – 028 40519999 | Fuse 2 Communications Ltd | Allocated | 2024-01-22 |
| 028 40520000 – 028 40520999 | BT | Allocated | 2014-12-16 |
| 028 40521000 – 028 40521999 | Convergence Group (wireless) Networks Limited | Allocated | 2019-05-21 |
| 028 40522000 – 028 40522999 | Invoco Ltd | Allocated | 2015-02-03 |
| 028 40523000 – 028 40523999 | I.T Communications Limited | Allocated | 2015-11-20 |
| 028 40524000 – 028 40524999 | Kalnet4U Ltd | Allocated | 2015-04-27 |
| 028 40525000 – 028 40525999 | YayYay Limited | Allocated | 2015-04-23 |
| 028 40526000 – 028 40526999 | Belgacom International Carrier Services SA | Allocated | 2020-07-10 |
| 028 40527000 – 028 40527999 | ICUK Computing Services Limited | Allocated | 2020-06-05 |
| 028 40528000 – 028 40528999 | Mintaka Limited | Allocated | 2017-04-04 |
| 028 40530000 – 028 40530999 | Virgin Media Limited | Allocated | 2022-04-05 |
| 028 40531000 – 028 40531999 | TGL Services (UK) Ltd | Allocated | 2025-05-07 |
| 028 40533000 – 028 40533999 | NFON UK Ltd | Allocated | 2022-05-30 |
| 028 40610000 – 028 40619999 | Linear Telecoms Limited | Allocated | 2010-10-19 |
| 028 40620000 – 028 40629999 | BT | Allocated | 1999-05-26 |
| 028 40630000 – 028 40639999 | BT | Allocated | 1999-05-26 |
| 028 40640000 – 028 40649999 | Magrathea Telecommunications Limited | Allocated | 2004-09-24 |
| 028 40650000 – 028 40659999 | BT | Allocated | 1999-05-26 |
| 028 40660000 – 028 40669999 | BT | Allocated | 1999-05-26 |
| 028 40670000 – 028 40679999 | BT | Allocated | 1999-05-26 |
| 028 40680000 – 028 40689999 | Voxbone SA | Allocated | 2008-09-30 |
| 028 40690000 – 028 40699999 | Sky UK Limited | Allocated | 2013-06-24 |
| 028 40770000 – 028 40779999 | Barritel Limited | Allocated | 2006-06-21 |
| 028 40840000 – 028 40849999 | Net-Work Internet Ltd | Allocated | 2007-10-08 |
| 028 40880000 – 028 40889999 | Suretec Systems Ltd | Allocated | 2010-05-14 |
| 028 40970000 – 028 40979999 | Digital Space Group Limited | Allocated | 2016-03-15 |
| 028 40980000 – 028 40989999 | Nationwide Telephone Assistance Ltd | Allocated | 2007-10-01 |
| 028 41020000 – 028 41029999 | TelNG Limited | Allocated | 2007-03-02 |
| 028 41030000 – 028 41039999 | AQL Wholesale Ltd | Allocated | 2008-01-04 |
| 028 41040000 – 028 41049999 | Digital Space Group Limited | Allocated | 2016-03-15 |
| 028 41060000 – 028 41069999 | CFL Communications Ltd | Allocated | 2009-07-21 |
| 028 41070000 – 028 41079999 | Nexus Telecommunications Limited | Allocated | 2009-10-08 |
| 028 41080000 – 028 41089999 | Digital Space Group Limited | Allocated | 2008-06-09 |
| 028 41100000 – 028 41109999 | Voiceflex Limited | Allocated | 2007-09-27 |
| 028 41110000 – 028 41119999 | Suretec Systems Ltd | Allocated | 2010-05-14 |
| 028 41120000 – 028 41120999 | Zapappi Ltd | Allocated | 2018-01-05 |
| 028 41121000 – 028 41121999 | IP Voice Networks Ltd | Allocated | 2017-09-20 |
| 028 41122000 – 028 41122999 | Number Services Ltd. | Allocated | 2018-11-22 |
| 028 41123000 – 028 41123999 | BT | Allocated | 2019-09-09 |
| 028 41124000 – 028 41124999 | Colt Technology Services | Allocated | 2018-01-16 |
1,953 more ranges — full list in CSV.
0284 allocation
Blocks whose local number starts with 4 under 5 places (028): 2,742,000 allocated numbers in 429 blocks.
Places named in the Ofcom file: Banbridge, Rostrevor, Kircubbin, Newcastle (Co. Down), Downpatrick.
- Protected
- 7,156,000 numbers · 1,567 blocks
- Allocated
- 2,742,000 numbers · 429 blocks
- Quarantined
- 50,000 numbers · 5 blocks
- Free
- 52,000 numbers · 52 blocks
Holders of 028 4 numbers
BT holds 10.2% of the allocated numbers (253,000 numbers, 28 blocks).
| Holder | Share | Numbers | Blocks | Earliest allocation |
|---|---|---|---|---|
| BT | 10.2% | 253,000 | 28 | 1999-05-26 |
| Digital Space Group Limited | 3.6% | 100,000 | 10 | 2008-06-09 |
| TalkTalk Communications Limited | 3.6% | 100,000 | 10 | 2007-10-05 |
| GCI Network Solutions Limited | 2.9% | 80,000 | 44 | 2017-04-19 |
| Gamma Telecom Holdings Limited | 2.2% | 61,000 | 7 | 2005-04-28 |
| Fuse 2 Communications Ltd | 2.0% | 55,000 | 10 | 2017-07-03 |
| 8x8 Communications CX Solutions LIMITED | 1.8% | 50,000 | 5 | 2011-05-12 |
| 8x8 Communications UK Limited | 1.8% | 50,000 | 5 | 2012-04-19 |
| AQL Wholesale Ltd | 1.8% | 50,000 | 5 | 2008-01-03 |
| Andrews & Arnold (Numbers) Ltd | 1.8% | 50,000 | 5 | 2009-04-16 |
| Atomstream Limited | 1.8% | 50,000 | 5 | 2010-04-15 |
| Barritel Limited | 1.8% | 50,000 | 5 | 2006-02-13 |
| CFL Communications Ltd | 1.8% | 50,000 | 5 | 2009-07-21 |
| Content Guru Limited | 1.8% | 50,000 | 5 | 2012-10-11 |
| Flextel Limited | 1.8% | 50,000 | 5 | 2005-11-15 |
| Hello Telecom (UK) Limited | 1.8% | 50,000 | 5 | 2012-12-27 |
| IOVOX Limited | 1.8% | 50,000 | 5 | 2013-08-21 |
| Inet Telecoms Ltd (Voipfone) | 1.8% | 50,000 | 5 | 2011-10-21 |
| Internexus Networks Limited | 1.8% | 50,000 | 5 | 2011-11-22 |
| Linear Telecoms Limited | 1.8% | 50,000 | 5 | 2010-10-19 |
| Localphone Limited | 1.8% | 50,000 | 5 | 2007-05-23 |
| Magrathea Telecommunications Limited | 1.8% | 50,000 | 5 | 2004-09-24 |
| Mars Communications Limited | 1.8% | 50,000 | 5 | 2009-02-03 |
| Nationwide Telephone Assistance Ltd | 1.8% | 50,000 | 5 | 2007-10-01 |
| Net-Work Internet Ltd | 1.8% | 50,000 | 5 | 2007-10-08 |
| Nexus Telecommunications Limited | 1.8% | 50,000 | 5 | 2009-04-06 |
| Nodemax Limited | 1.8% | 50,000 | 5 | 2008-07-07 |
| Served Up Limited | 1.8% | 50,000 | 5 | 2008-10-09 |
| Simwood eSMS Limited | 1.8% | 50,000 | 5 | 2012-02-23 |
| Solutios Limited | 1.8% | 50,000 | 5 | 2008-11-27 |
| Spitfire Network Services Limited | 1.8% | 50,000 | 5 | 2006-11-29 |
| Suretec Systems Ltd | 1.8% | 50,000 | 5 | 2010-05-14 |
| TTNC Limited | 1.8% | 50,000 | 5 | 2013-11-14 |
| TelNG Limited | 1.8% | 50,000 | 5 | 2007-03-02 |
| Telecom2 Limited | 1.8% | 50,000 | 5 | 2009-09-10 |
| Telecoms World Limited | 1.8% | 50,000 | 5 | 2009-07-02 |
| VoIP-Un Limited | 1.8% | 50,000 | 5 | 2007-11-08 |
| VoiceHost Limited | 1.8% | 50,000 | 5 | 2010-07-02 |
| Voiceflex Limited | 1.8% | 50,000 | 5 | 2007-09-26 |
| Voxbone SA | 1.8% | 50,000 | 5 | 2008-09-30 |
| XoverX Ltd | 1.8% | 50,000 | 5 | 2013-04-25 |
| Ziron Limited | 1.8% | 50,000 | 5 | 2012-08-21 |
| Sky UK Limited | 1.5% | 41,000 | 5 | 2013-06-24 |
| Vodafone Ltd (C&W) | 1.5% | 41,000 | 5 | 2013-09-10 |
| IV Response Limited | 0.7% | 20,000 | 2 | 2005-07-25 |
| Orbtalk Limited | 0.7% | 20,000 | 2 | 2011-11-10 |
| Core Telecom Limited | 0.4% | 10,000 | 1 | 2010-08-06 |
| Datazero Ltd | 0.4% | 10,000 | 1 | 2019-07-19 |
| Orange Business Holdings UK Limited | 0.4% | 10,000 | 1 | 2013-02-26 |
| Telappliant Limited | 0.4% | 10,000 | 1 | 2010-06-29 |
| TeleWare Group Limited | 0.4% | 10,000 | 1 | 2010-01-26 |
| 24 Seven Cloud Communications Ltd | 0.2% | 5,000 | 5 | 2020-01-13 |
| Adepteo Limited | 0.2% | 5,000 | 5 | 2016-10-19 |
| Bink Networks Ltd | 0.2% | 5,000 | 5 | 2023-03-27 |
| Colt Technology Services | 0.2% | 5,000 | 5 | 2015-10-28 |
| Convergence Group (wireless) Networks Limited | 0.2% | 5,000 | 5 | 2019-05-21 |
| Dial 9 Communications Limited | 0.2% | 5,000 | 5 | 2019-12-09 |
| Eircom (UK) Limited | 0.2% | 5,000 | 5 | 2021-02-25 |
| ICUK Computing Services Limited | 0.2% | 5,000 | 5 | 2020-06-05 |
| INTELLIGENT EXCHANGES LIMITED | 0.2% | 5,000 | 5 | 2026-01-26 |
| IP Voice Networks Ltd | 0.2% | 5,000 | 5 | 2017-09-20 |
| Invoco Ltd | 0.2% | 5,000 | 5 | 2015-02-03 |
| Kalnet4U Ltd | 0.2% | 5,000 | 5 | 2015-04-27 |
| Number Services Ltd. | 0.2% | 5,000 | 5 | 2018-11-22 |
| Reality Network Services Limited | 0.2% | 5,000 | 5 | 2020-12-22 |
| TGL Services (UK) Ltd | 0.2% | 5,000 | 5 | 2025-05-07 |
| VOXYONDER NETWORK SERVICES UK LTD | 0.2% | 5,000 | 5 | 2020-09-10 |
| YayYay Limited | 0.2% | 5,000 | 5 | 2015-04-23 |
| Zapappi Ltd | 0.2% | 5,000 | 5 | 2018-01-05 |
| Belgacom International Carrier Services SA | 0.1% | 4,000 | 4 | 2016-06-20 |
| DIDWW Ireland Limited | 0.1% | 4,000 | 4 | 2019-01-18 |
| Mi Telecom Limited | 0.1% | 4,000 | 4 | 2020-07-03 |
| Mintaka Limited | 0.1% | 4,000 | 4 | 2017-04-04 |
| NFON UK Ltd | 0.1% | 4,000 | 4 | 2022-05-30 |
| I.T Communications Limited | 0.1% | 3,000 | 3 | 2015-11-20 |
| Virgin Media Limited | 0.1% | 2,000 | 2 | 2018-02-28 |
| Alnitak GmbH | 0.0% | 1,000 | 1 | 2016-06-10 |
| Antheus Telecom Limited | 0.0% | 1,000 | 1 | 2017-08-23 |
| Onvoy Communications Ltd. | 0.0% | 1,000 | 1 | 2022-04-08 |
| SONA BUSINESS PVT. LTD. | 0.0% | 1,000 | 1 | 2023-03-27 |
| TELNYX UK LIMITED | 0.0% | 1,000 | 1 | 2020-05-07 |
| Tata Communications (UK) Limited | 0.0% | 1,000 | 1 | 2024-08-29 |
Weekly changes for 0284
0 block changes from 19 Aug 2026 to 17 Oct 2026. Each week counts a block once.
| From | To | Changed blocks |
|---|---|---|
| 2026-08-19 | 2026-08-26 | 0 |
| 2026-08-26 | 2026-09-02 | 0 |
| 2026-09-02 | 2026-09-09 | 0 |
| 2026-09-09 | 2026-09-16 | 0 |
| 2026-09-16 | 2026-09-24 | 0 |
| 2026-09-24 | 2026-09-30 | 0 |
| 2026-09-30 | 2026-10-07 | 0 |
| 2026-10-07 | 2026-10-17 | 0 |
These numbers belong to 028 5 places. Methodology.
0284 source: Ofcom s1.csv, published 14 Oct 2026. Download 028 4 blocks (CSV). Contains Ofcom copyright material.
Source detail · 0284
| Claim | Value | Identifier |
|---|---|---|
| allocated_numbers | 2742000 | subcode:028-4:allocated_numbers:fc227d9e:v1 |
| allocated_records | 429 | subcode:028-4:allocated_records:fc227d9e:v1 |
| listed_holders | 82 | subcode:028-4:listed_holders:fc227d9e:v1 |
| area_code | 028 | subcode:028-4:area_code:fc227d9e:v1 |
| first_digit | 4 | subcode:028-4:first_digit:fc227d9e:v1 |
| snapshot_date | 14 Oct 2026 | subcode:028-4:snapshot_date:fc227d9e:v1 |