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Number family · Ofcom numbering snapshot published 14 Oct 2026

0330 numbers: UK-wide numbers in Ofcom’s register

What does Ofcom list for 0330 numbers?

0330 numbers are UK-wide numbers, not tied to a place. In the Ofcom snapshot published 14 Oct 2026, 303 of the 994 0330 number blocks are allocated (3,030,000 numbers) to 150 range holders. Calls to 03 numbers cost no more than calls to 01 and 02 numbers and count towards inclusive minutes. Check the number below.

Did not expect the call? Do not call back; contact the organisation on a number you find yourself.

3,030,000Numbers allocated
303Blocks allocated, of 994
150Range holders
7Blocks changed since 19 Aug 2026
Allocation status of 0330 blocks, snapshot published 14 Oct 2026
StatusBlocks
Allocated303
Free650
Protected37
Quarantined4

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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What should I do after a suspicious call from a 0330 number?

Calls to 03 numbers cost no more than calls to 01 and 02 numbers and count towards inclusive minutes.

Steps after an unexpected call
StepAction
1Do not call back a number you cannot identify. If it rang once and cut off, that is often a test that your line is live.
2If the caller said they were your bank, a company or the police, hang up and phone the organisation on a number you find yourself, or call 159 for your bank.
3Forward suspicious text messages to 7726, free of charge.
4If you lost money or shared details, contact your bank at once and report to Action Fraud (England, Wales and Northern Ireland) or Police Scotland.
5For unwanted marketing calls, report to the ICO and block the number on your phone.
6Calls to 01 and 02 numbers are charged at your provider’s standard landline rate (gov.uk/call-charges).
7Calls to 03 numbers cost no more than calls to 01 and 02 numbers and count towards inclusive minutes.

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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What state are 0330 number blocks in?

Of the 994 0330 blocks in the snapshot published 14 Oct 2026, 30.5% are allocated, against 58.1% of all non-geographic blocks. The chart shows every status Ofcom lists for this family next to all non-geographic numbers.

100% stacked bar: 0330 block status vs all non-geographic blocks, 30.5% allocated vs 58.1% of all non-geographic blocks, Ofcom snapshot published 14 Oct 2026
Status of 0330 number blocks vs all non-geographic blocks, snapshot published 14 Oct 2026 · Ofcom · 14 Oct 2026
Status of 0330 number blocks vs all non-geographic blocks, snapshot published 14 Oct 2026
StatusBlocksShare of 0330Share of all non-geographic
Allocated30330.5%50.9%
Allocated(Closed Range)00.0%7.2%
Free65065.4%18.1%
Protected373.7%21.9%
Quarantined40.4%1.8%
Reserved00.0%0.1%

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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Which range holders have 0330 blocks?

150 range holders have allocated 0330 blocks. The table lists them alphabetically with their blocks and numbers in this family.

A holder’s name here records an Ofcom allocation only; it is not evidence about the range holder or caller.

150 range holders, alphabetical
Range holders with allocated 0330 blocks, alphabetical, snapshot published 14 Oct 2026
Range holderBlocksNumbers
(AQ) LIMITED330,000
10EX NET LIMITED110,000
24 Seven Cloud Communications Ltd110,000
24 Seven Communications Limited110,000
Adepteo Limited110,000
Alnitak GmbH220,000
Aloha Telecommunications Ltd330,000
Alphatalk Limited220,000
AQL Wholesale Ltd110,000
Atlantic Communications Corp Ltd110,000
Atmoso Limited110,000
Atomstream Limited110,000
Barritel Limited880,000
Belgacom International Carrier Services SA110,000
Bink Broadband Ltd110,000
Bink Networks Ltd110,000
BT880,000
Buzz Networks Limited110,000
Callitech Limited220,000
Chess Limited110,000
Citrus Telecommunications Ltd550,000
Cloudcall Limited220,000
Colt Technology Services440,000
Connect Telecom UK Limited110,000
Continuity Assured Limited110,000
Convergence Group (wireless) Networks Limited110,000
Core Telecom Limited110,000
Daotec Ltd110,000
Datazero Ltd220,000
Dial 9 Communications Limited110,000
DID Universe LLC110,000
DIDWW Ireland Limited220,000
Digital Select Limited110,000
Digital Space Group Limited220,000
Digitech Solutions Global Limited110,000
DRD Communications Limited220,000
EE Limited (Orange)550,000
Eircom (UK) Limited110,000
Firstcom Europe Limited110,000
Flextel Limited110,000
Fluency Communications Ltd110,000
Fuse 2 Communications Ltd110,000
FUSION TELECOM LTD110,000
Gamma Telecom Holdings Limited21210,000
GCI Network Solutions Limited990,000
Ghost Telecom Limited110,000
Global Reach Networks Limited110,000
Group 3 Technology Limited110,000
Hello Telecom (UK) Limited110,000
I.T Communications Limited110,000
ICUK Computing Services Limited110,000
Inet Telecoms Ltd (Voipfone)110,000
Infinity Tracking Ltd330,000
Internexus Networks Limited110,000
InTouch Communication Services Limited110,000
Invade International Ltd110,000
Invosys Limited110,000
IOVOX Limited220,000
Jtec UK Limited110,000
KCOM Group Ltd110,000
KERV EXPERIENCE LIMITED110,000
Linear Telecoms Limited110,000
Localphone Limited110,000
Lumen Technologies UK Limited660,000
Lycatel (Ireland) Limited110,000
M247 Ltd110,000
Magrathea Telecommunications Limited440,000
Media Hawk Ltd220,000
Mi Telecom Limited220,000
Minotaur Telecom Limited110,000
Nebula Cloud Limited110,000
Need More Time Ltd110,000
Net-Work Internet Ltd110,000
Network Rail Infrastructure Limited770,000
Nexus Telecommunications Limited110,000
NFON UK Ltd110,000
Node4 Ltd220,000
Nowtel Wholesale Limited110,000
Number Solutions Ltd110,000
Numbers Telecom Limited110,000
Nuso Cloud UK Limited440,000
Odigo110,000
Odyssey Systems Ltd220,000
Orange Business Holdings UK Limited220,000
Orbital Net Limited110,000
OVH Limited110,000
PCI-PAL (UK) Limited110,000
Pebbletree Ltd110,000
PEERLESS NETWORK UK LIMITED110,000
Phone Co-Op Numbering Limited110,000
Public Internet Limited110,000
Pure-IP Limited110,000
Resilient Limited110,000
Retail Technology Services Ltd110,000
Served Up Limited220,000
Sigma Voice Solutions Ltd110,000
Simwood eSMS Limited220,000
SiPalto Ltd110,000
Sipcentric Ltd110,000
Six Degrees Technology Group Limited220,000
SMARTVOICE LTD110,000
SONA BUSINESS PVT. LTD.110,000
Spacetel UK Ltd110,000
Spitfire Network Services Limited110,000
Square 1 Communications Limited110,000
Square Systems Limited330,000
Stour Marine Limited110,000
Supported Business Limited110,000
Suretec Systems Ltd110,000
Swiftnet Limited110,000
Syntec Limited440,000
Talk Numbers Ltd110,000
Talk.to FZC110,000
TalkTalk Communications Limited110,000
Tango Networks UK Ltd220,000
TAP GATEWAY LTD110,000
Telappliant Limited110,000
Telecom 10 Ltd110,000
Telecoms World Direct Limited110,000
Teledesign Solutions Limited110,000
Telemix Limited110,000
TeleSurf Limited110,000
TeleWare Group Limited110,000
TelNG Limited110,000
TELNYX UK LIMITED110,000
TelXL Limited330,000
TGL Services (UK) Ltd110,000
Thumbtel Ltd26260,000
Tismi BV110,000
TRISTAR TELECOM LIMITED110,000
Truespeed Communications Ltd110,000
Tuxtel Ltd110,000
UK BROADBAND LIMITED110,000
Virgin Media Limited220,000
Vodafone Ltd (C&W)18180,000
Voiceflex Limited660,000
Voicetec Systems Ltd110,000
VoIP-Un Limited110,000
Vonage Business Limited110,000
Voxbone SA440,000
WAVECREST NETWORKS LIMITED110,000
Wavenet UK Ltd110,000
WIDEFM LIMITED110,000
Windsor Telecom Limited220,000
YayYay Limited110,000
YEMOT HAMOSHIACH UK LTD110,000
York Data Services Limited110,000
Zapappi Ltd110,000
Zestel Limited110,000
Ziron Limited110,000

The full alphabetical list is in the CSV.

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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Has anything changed in 0330 blocks, and what was allocated recently?

Between the weekly Ofcom files fetched on 19 Aug 2026 and 17 Oct 2026, 7 0330 blocks changed status or holder; a block with several changes counts once. 1 0330 blocks have an allocation date in the last 12 months.

Ofcom: “Please note that transferred numbers will also be shown as ‘allocated’.” (numbering data, ofcom.org.uk, retrieved 24 Sep 2026)
Weekly register changes for 0330 blocks, 19 Aug 2026 – 17 Oct 2026; a block with several changes counts once
Weekly transitionChanged blocks
2026-08-19 – 2026-08-260
2026-08-26 – 2026-09-020
2026-09-02 – 2026-09-090
2026-09-09 – 2026-09-160
2026-09-16 – 2026-09-241
2026-09-24 – 2026-09-300
2026-09-30 – 2026-10-076
2026-10-07 – 2026-10-170

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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Since when have 0330 blocks been allocated?

The earliest allocation date recorded for an allocated 0330 block is 2007; 68 of 303 allocated blocks carry a date from 2020 onwards. Recorded dates are provisional: a block that moved to another provider may show the date of that move.

histogram: 0330 allocated blocks by recorded allocation year, earliest 2007 vs 68 blocks dated from 2020, snapshot published 14 Oct 2026
Recorded allocation years of allocated 0330 blocks, snapshot published 14 Oct 2026 · Ofcom · 14 Oct 2026
Recorded allocation years of allocated 0330 blocks, snapshot published 14 Oct 2026
Recorded yearsAllocated blocks
1994–19990
2000–20040
2005–200939
2010–2014119
2015–201977
2020–202462
2025–20296

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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How long are 0330 numbers?

Every 0330 block in the snapshot published 14 Oct 2026 is for 11-digit numbers, counting the leading zero.

0330 number blocks by number length, snapshot published 14 Oct 2026
Number length, counting the leading zeroBlocks
11 digits994

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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Where do these numbers come from, and how do I cite this page?

Rangecheck, “0330 numbers — Ofcom numbering snapshot published 14 Oct 2026”, release fc227d9e, https://rangecheck.co.uk/number-types/0330/, retrieved 24 Sep 2026. Contains Ofcom copyright material: numbering data (ofcom.org.uk).

How to cite · Contains Ofcom copyright material

Provenance
FieldValue
Releasefc227d9e
Source published14 Oct 2026
Source fetched2026-10-17 20:56 UTC
Source filess3.csv

Source: Ofcom numbering data s3.csv, published 14 Oct 2026, fetched 2026-10-17 20:56 UTC, sha256 s3.csv d3daf36d · n = 994 blocks · method: block capacity from number length · release fc227d9e · CSV

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