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Non-geographic

0303 Public sector numbers UK

0303 is reserved for public-sector and not-for-profit bodies. Calls cost the same as 01/02 numbers.

Ofcom lists 61 allocated 0303 ranges, the most held by BT. Cost to call: never more than a call to an 01 or 02 number.

0303 at a glance

Number type
Non-geographic
Allocated ranges
61 of 1,000 on Ofcom's register
Largest holders
Who may use it
Public-sector bodies and not-for-profit organisations (Ofcom 030 guidance)
First allocated
26 March 2007
Newest range
13 March 2026 (1 in the last 12 months)

Source: Ofcom numbering data, re-imported weekly.

What it costs to call a 0303 number

Never more than a call to an 01 or 02 number.

From a landline
Same as an 01/02 call: typically up to 16p a minute, or included in a call package
From a mobile
Counts towards inclusive minutes; 3p to 65p a minute outside them

Source: Ofcom call costs guide (updated 31 January 2025). Ofcom treats these as indicative; your provider sets the final price.

What people check and report about 0303 numbers

From searches in our lookup form since 13 May 2026 and the verdicts and reports visitors left. A check means someone typed the number in, usually after a missed call.

Caller verdicts on 0303 numbers: 2

1 scam, 1 safe. Too few to show shares yet.

Latest comments

  • “Been called 5 times over the last 2 days, they do not speak and always hangup when I say hello or speak. These calls come from the range”

    Scam · 0303 330 7043 · 30 Sept 2026

  • “nhs 111”

    Safe · 0303 770 7700 · 29 Jul 2026

Most-reported and most-checked 0303 numbers

NumberVerdictsReportsPeople checking
0303 330 70431 scam—2
0303 770 77001 safe—1

If a 0303 number called you

No clear pattern in reports for these numbers yet. If a call worried you:

  1. 1

    Call back on a number you trust

    If a caller says they're your bank, HMRC, a courier or a council, hang up and ring the organisation on the number from its website or your statement, never the number that called you. Caller ID can be faked.

  2. 2

    Forward it to 7726

    On a mobile, copy the caller's number from your recent calls and text it to 7726 (it spells SPAM). Scam texts can be forwarded to 7726 as they are. It's free, and your network uses the reports to investigate and block numbers.

    Ofcom: what to do about a scam call ↗

  3. 3

    Stop sales calls

    Register your landline and mobile free with the Telephone Preference Service (0345 070 0707). Legitimate UK marketers must check it; calls should drop within 28 days. It won't stop scammers.

    Telephone Preference Service ↗

  4. 4

    If you lost money or shared details

    Call your bank on the number on your card (or 159 to reach most UK banks safely), then report it to Report Fraud online or on 0300 123 2040. Report Fraud replaced Action Fraud on 4 December 2025 for England, Wales and Northern Ireland; in Scotland call Police Scotland on 101.

    159 (Stop Scams UK) ↗Report Fraud ↗

About 0303 numbers in the UK

0303 belongs to the Non-geographic family of Ofcom’s National Telephone Numbering Plan. 0303 is reserved for public-sector and not-for-profit bodies. Calls cost the same as 01/02 numbers. Ofcom allocates 0303 ranges to communications providers, who assign them to the organisations that use them; the table below lists the ranges in the latest weekly Ofcom data. For how prefixes are organised, see how Ofcom allocates UK phone numbers.

Ranges starting with 0303first 200 of 1,000
PrefixStatusRange holderAllocated
+44 303000Protected——
+44 303001AllocatedBT1 May 2025
+44 303002Free——
+44 303003AllocatedGamma Telecom Holdings Limited12 April 2007
+44 303004Free——
+44 303005Free——
+44 303006Free——
+44 303007Free——
+44 303008Free——
+44 303009Free——
+44 303010Quarantined——
+44 303011Free——
+44 303012Free——
+44 303013Free——
+44 303014Free——
+44 303015Free——
+44 303016Free——
+44 303017Free——
+44 303018Free——
+44 303019Free——
+44 303020AllocatedTelXL Limited20 April 2007
+44 303021Free——
+44 303022Free——
+44 303023Free——
+44 303024Free——
+44 303025Free——
+44 303026Free——
+44 303027Free——
+44 303028Free——
+44 303029Free——
+44 303030AllocatedDigital Space Group Limited29 February 2016
+44 303031AllocatedTelecom2 Limited24 August 2009
+44 303032Free——
+44 303033AllocatedNextec UK Limited26 November 2013
+44 303034Free——
+44 303035Free——
+44 303036Free——
+44 303037Free——
+44 303038Free——
+44 303039Free——
+44 303040AllocatedMagrathea Telecommunications Limited26 March 2007
+44 303041Free——
+44 303042Free——
+44 303043Free——
+44 303044Free——
+44 303045Free——
+44 303046Free——
+44 303047Free——
+44 303048Free——
+44 303049Free——
+44 303050AllocatedServed Up Limited20 October 2008
+44 303051Free——
+44 303052Free——
+44 303053Free——
+44 303054Free——
+44 303055Free——
+44 303056Free——
+44 303057Free——
+44 303058Free——
+44 303059Free——
+44 303060AllocatedAccounts Centre Limited16 July 2010
+44 303061Free——
+44 303062Free——
+44 303063Free——
+44 303064Free——
+44 303065Free——
+44 303066Free——
+44 303067Free——
+44 303068Free——
+44 303069Free——
+44 303070AllocatedCINOS LIMITED13 March 2026
+44 303071Free——
+44 303072Free——
+44 303073Free——
+44 303074Free——
+44 303075Free——
+44 303076Free——
+44 303077Free——
+44 303078Free——
+44 303079Free——
+44 303080AllocatedColt Technology Services17 August 2021
+44 303081AllocatedColt Technology Services17 August 2021
+44 303082AllocatedColt Technology Services17 August 2021
+44 303083AllocatedColt Technology Services17 August 2021
+44 303084Free——
+44 303085Free——
+44 303086Free——
+44 303087Free——
+44 303088AllocatedTelet Research (NI) Limited9 November 2021
+44 303089Free——
+44 303090Free——
+44 303091Free——
+44 303092Free——
+44 303093Free——
+44 303094Free——
+44 303095Free——
+44 303096Free——
+44 303097Free——
+44 303098Free——
+44 303099Free——
+44 303100AllocatedNuso Cloud UK Limited21 July 2008
+44 303101Free——
+44 303102Free——
+44 303103Free——
+44 303104Free——
+44 303105Free——
+44 303106Free——
+44 303107Free——
+44 303108Free——
+44 303109Free——
+44 303110Free——
+44 303111Free——
+44 303112Free——
+44 303113Free——
+44 303114Free——
+44 303115Free——
+44 303116Free——
+44 303117Free——
+44 303118Free——
+44 303119Free——
+44 303120Free——
+44 303121Free——
+44 303122Free——
+44 303123AllocatedBT11 April 2007
+44 303124Free——
+44 303125Free——
+44 303126Free——
+44 303127Free——
+44 303128Free——
+44 303129Free——
+44 303130Free——
+44 303131AllocatedMintaka Limited30 December 2013
+44 303132Protected——
+44 303133Free——
+44 303134Free——
+44 303135Free——
+44 303136Free——
+44 303137Free——
+44 303138Free——
+44 303139Free——
+44 303140Free——
+44 303141AllocatedAtomstream Limited22 April 2010
+44 303142Free——
+44 303143Free——
+44 303144Free——
+44 303145Free——
+44 303146Free——
+44 303147Free——
+44 303148Free——
+44 303149Free——
+44 303150Free——
+44 303151Free——
+44 303152Free——
+44 303153Free——
+44 303154Free——
+44 303155Free——
+44 303156Free——
+44 303157Free——
+44 303158Free——
+44 303159Free——
+44 303160Free——
+44 303161Free——
+44 303162Free——
+44 303163Free——
+44 303164Free——
+44 303165Free——
+44 303166Free——
+44 303167Free——
+44 303168Free——
+44 303169Free——
+44 303170Free——
+44 303171Free——
+44 303172Free——
+44 303173Free——
+44 303174Free——
+44 303175Free——
+44 303176Free——
+44 303177Free——
+44 303178Free——
+44 303179Free——
+44 303180Free——
+44 303181Free——
+44 303182Free——
+44 303183Free——
+44 303184Free——
+44 303185Free——
+44 303186Free——
+44 303187Free——
+44 303188Free——
+44 303189Free——
+44 303190Free——
+44 303191Free——
+44 303192Free——
+44 303193Free——
+44 303194Free——
+44 303195Free——
+44 303196Free——
+44 303197Free——
+44 303198Free——
+44 303199Free——

Related lookups

FAQs about 0303

What does 0303 cost to call?

Never more than a call to an 01 or 02 number. From a landline: Same as an 01/02 call: typically up to 16p a minute, or included in a call package. From a mobile: Counts towards inclusive minutes; 3p to 65p a minute outside them. (Ofcom call costs guide.)

Who provides 0303 numbers?

Ofcom lists 61 allocated 0303 ranges. The largest holders are BT (25), Colt Technology Services (5) and Gamma Telecom Holdings Limited (4). The holder is the company that supplies the number to the organisation using it, not the caller.

Do people report 0303 calls?

2 verdicts so far: 1 scam, 0 nuisance, 1 safe.

How do I report a 0303 call?

On a mobile, text the number to 7726 (free). Report fraud to Report Fraud on 0300 123 2040 (Police Scotland on 101 in Scotland); unwanted sales calls go to the ICO once you've registered with the Telephone Preference Service.