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Range holder

VoIP-Un Limited

VoIP-Un Limited is listed by Ofcom as the originally-allocated provider for 669 UK number ranges, mostly landline (01/02). Numbers within these blocks may have since been ported to a different carrier.

VoIP-Un Limited at a glance

Number ranges
669
Number types
  • Landline (01/02) 660
  • UK-wide (03) 5
  • Service (084/087) 3
  • Freephone (080) 1
First allocation
24 October 2007
Latest allocation
6 July 2017
Most blocks in
028 Northern Ireland, 01539 Kendal, 01768 Penrith

Source: Ofcom numbering data, re-imported weekly. Each range is counted once.

Allocated ranges by year

The year Ofcom allocated each range VoIP-Un Limited still holds; the busiest year was 2007 (661).

2007661
20082
20121
20151
20161
20173

If a number from VoIP-Un Limited's ranges 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 ↗

All VoIP-Un Limited ranges669, by prefix
PrefixStatus
+44 113848Allocated
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Per-area pages

Related lookups

Frequently asked questions

What does it mean that VoIP-Un Limited is the range holder?

Ofcom allocated the blocks listed on this page to VoIP-Un Limited. A number keeps its digits when its user switches provider, so a number in these blocks may now be on another network; Ofcom doesn't publish who a number is on today.

What kinds of numbers does VoIP-Un Limited hold?

Of its 669 allocated ranges: 660 landline (01/02), 5 uk-wide (03), 3 service (084/087), 1 freephone (080). The oldest dates from 24 October 2007 and the newest from 6 July 2017.

Which area codes does VoIP-Un Limited have most numbers in?

By allocated blocks: 028 Northern Ireland (34), 01539 Kendal (4), 01768 Penrith (4), 01434 Hexham (3), 01507 Louth (3).

How often is the VoIP-Un Limited list updated?

Ofcom publishes its numbering data every Wednesday and this page is rebuilt from it weekly, so new VoIP-Un Limited blocks appear within about a week.