Range holder
Continuity Assured Limited
Continuity Assured Limited is listed by Ofcom as the originally-allocated provider for 10 UK number ranges, mostly service (084/087). Numbers within these blocks may have since been ported to a different carrier.
Continuity Assured Limited at a glance
- Number ranges
- 10
- Number types
- Service (084/087) 6
- Freephone (080) 2
- UK-wide (03) 2
- First allocation
- 7 January 2010
- Latest allocation
- 11 July 2016
Source: Ofcom numbering data, re-imported weekly. Each range is counted once.
Allocated ranges by year
The year Ofcom allocated each range Continuity Assured Limited still holds; the busiest year was 2010 (7).
If a number from Continuity Assured Limited's ranges called you
No clear pattern in reports for these numbers yet. If a call worried you:
- 1
Don't ring back to find out
Ofcom warns against returning missed calls from 070, 076, 084, 087, 09 and 118 numbers you don't recognise: a one-ring call that tempts you to call back can land you with premium charges. Check the full number here first.
- 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.
- 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.
- 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.
All Continuity Assured Limited ranges10, by prefix
| Prefix | Status |
|---|---|
| +44 300005 | Allocated |
| +44 330205 | Allocated |
| +44 8000210 | Allocated |
| +44 808174 | Allocated |
| +44 843479 | Allocated |
| +44 843856 | Allocated |
| +44 845153 | Allocated |
| +44 870962 | Allocated |
| +44 8710505 | Allocated |
| +44 872621 | Allocated |
Related lookups
- Continuity Assured Limited scam & spam reportsCommunity-reported numbers on this holder's ranges
- (AQ) LIMITEDSibling range holder
- 001 International TelecomSibling range holder
- 08 Numbers LtdSibling range holder
- All range holdersBrowse every Ofcom-listed provider
- All UK area codesEvery 01/02 dialling code
- Top reported UK numbersCross-holder leaderboard
- Lookup any UK numberFree reverse phone lookup
- How Ofcom numbering worksThe UK numbering plan explained
- Range Holder vs current providerCornerstone guide
- Ofcom range holder lookupCornerstone guide
- UK phone number portability explainedCornerstone guide
- VoIP numbers UK — 056 vs 020Cornerstone guide
Frequently asked questions
What does it mean that Continuity Assured Limited is the range holder?
Ofcom allocated the blocks listed on this page to Continuity Assured 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 Continuity Assured Limited hold?
Of its 10 allocated ranges: 6 service (084/087), 2 freephone (080), 2 uk-wide (03). The oldest dates from 7 January 2010 and the newest from 11 July 2016.
How often is the Continuity Assured Limited list updated?
Ofcom publishes its numbering data every Wednesday and this page is rebuilt from it weekly, so new Continuity Assured Limited blocks appear within about a week.