Six Degrees Spam Calls — UK Numbers Most Reported on Our Checker
Ranking of the Six Degrees-allocated UK numbers most-looked-up on our free UK Phone Number Checker. These rankings reflect public lookup interest, which strongly correlates with scam / nuisance call reporting. Currently tracking 1,835 distinct numbers across 2,342 public lookups.
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Top-looked-up Six Degrees numbers
Click any number to see its full lookup page with risk-level, range holder, community reports and related numbers.
| Number | Searches | Last looked up |
|---|---|---|
| 01604 263120 | 11 | 31 Jul 2026 |
| 020 3189 1970 | 11 | 29 Jul 2026 |
| 0800 082 8094 | 11 | 16 Jul 2026 |
| 01604 211486 | 10 | 19 Jul 2026 |
| 0330 045 0430 | 9 | 24 Jul 2026 |
| 01604 213958 | 8 | 11 Jul 2026 |
| 023 9212 4429 | 8 | 13 Aug 2026 |
| 01604 279261 | 7 | 22 Aug 2026 |
| 0161 362 4066 | 7 | 20 Jul 2026 |
| 01604 204072 | 6 | 17 Aug 2026 |
| 01604 213949 | 6 | 24 Jul 2026 |
| 01604 213965 | 6 | 13 Aug 2026 |
| 01604 218238 | 6 | 29 Jul 2026 |
| 01604 218923 | 6 | 2 Jul 2026 |
| 01604 263391 | 6 | 20 Jun 2026 |
| 01604 266379 | 6 | 17 Jul 2026 |
| 01604 279825 | 6 | 19 Aug 2026 |
| 0116 321 0021 | 6 | 18 Aug 2026 |
| 020 3189 4604 | 6 | 29 Jul 2026 |
| 020 7965 7595 | 6 | 29 Jul 2026 |
About Six Degrees in the Ofcom register
Six Degrees is one of the UK communications providers allocated number ranges by Ofcom under the National Telephone Numbering Plan. Number allocations are recorded against the legal entity Six Degrees Technology Group Limited. Numbers within those ranges may now be in active use by the original allocated subscriber, may have been ported to another carrier under UK number portability rules, or may have been re-issued after being returned to the operator's pool — so the Ofcom range holder is not a guarantee of the current call source.
Six Degrees's UK number allocation
Ofcom has allocated 934 number blocks to Six Degrees Technology Group Limited. Each block is typically 1,000 or 10,000 consecutive numbers. The mix below shows what kinds of numbers Six Degrees runs — useful context for judging whether a call claiming to be from Six Degrees is plausible.
| Number type | Allocated blocks | Share |
|---|---|---|
| Geographic landline (01 / 02) | 813 | 87% |
| Freephone & special-rate (08) | 55 | 6% |
| UK-wide non-geographic (03) | 49 | 5% |
| Premium rate (09) | 14 | 1% |
| Service & access codes | 2 | 0% |
| Corporate & VoIP (056) | 1 | 0% |
Are Six Degrees numbers safe to answer?
Usually, yes — the vast majority of calls from Six Degrees-allocated ranges are ordinary, legitimate calls. But a number sitting in a Six Degrees range is not a guarantee of safety: fraudsters routinely spoof or hijack numbers from every major UK operator, and porting means a number may no longer be on Six Degrees's network at all. Judge each call on what's actually said: never hand over bank details, passwords or one-time security codes to an unexpected caller, and if in doubt hang up and call the organisation back on a number you have verified independently.
How to block and report unwanted Six Degrees calls
Block or report an unwanted number
- You can block an unwanted number directly from your recent-calls list on iPhone or Android, and forward scam texts free to 7726.
- Scam or fraud calls should be reported to Action Fraud (0300 123 2040) or Police Scotland (101); persistent marketing calls to the ICO / TPS.
Full step-by-step instructions for every phone, network-level blocking and all UK reporting routes are in our guide: How to block and report unwanted calls in the UK.
How to stop unwanted calls for good
Blocking Six Degrees numbers stops that one number, but determined nuisance callers simply switch numbers. Silencing unknown callers, enabling your network's free spam shield and registering with the TPS cut the volume across the board — our canonical guide walks through each step: How to block and report unwanted calls in the UK.
Frequently asked questions about Six Degrees numbers
Are Six Degrees numbers always genuine?
No. While Six Degrees is allocated UK number ranges by Ofcom, scammers commonly spoof or hijack numbers from any UK operator's range. A number being in a Six Degrees-allocated block does not guarantee the caller is Six Degrees or Six Degrees-owned.
How do I report a Six Degrees spam call?
Forward spam SMS messages to 7726 (free of charge — works for all UK mobile networks). Report unsolicited marketing calls to the Information Commissioner's Office (ICO) at ico.org.uk/concerns. If you lost money to a scam call, report to Action Fraud at actionfraud.police.uk or 0300 123 2040.
How do I block a Six Degrees number?
On iPhone, tap (i) next to the number in Recents and choose Block this Caller. On Android, long-press the number and choose Block / Report spam. To prevent unknown callers ringing through, enable Settings → Phone → Silence Unknown Callers (iPhone) or your dialler's spam filter (Android).
Why are some Six Degrees numbers reported as scam more than others?
Fraudsters target ranges they know are widely allocated, so the volume of reports per Six Degrees number reflects the size of the active block more than Six Degrees's own conduct. Numbers in newer or larger ranges naturally see more reports purely on volume.
Check another UK number
Or use the free UK Phone Number Checker to look up any UK number — the result shows the Ofcom range holder, risk level, and any community reports on file. You can also add your own report directly on the checker results page.