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 87 distinct numbers across 136 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 213958 | 6 | 26 May 2026 |
| 01604 219281 | 4 | 6 Jun 2026 |
| 01604 279261 | 4 | 3 Jun 2026 |
| 0161 362 4066 | 4 | 8 Jun 2026 |
| 01604 211486 | 3 | 6 Jun 2026 |
| 01604 213965 | 3 | 6 Jun 2026 |
| 01604 214534 | 3 | 8 Jun 2026 |
| 01604 266379 | 3 | 11 Jun 2026 |
| 01604 271895 | 3 | 10 Jun 2026 |
| 01604 279825 | 3 | 10 Jun 2026 |
| 020 3142 9058 | 3 | 6 Jun 2026 |
| 023 9212 4429 | 3 | 4 Jun 2026 |
| 01604 213968 | 2 | 9 Jun 2026 |
| 01604 213971 | 2 | 10 Jun 2026 |
| 01604 216710 | 2 | 5 Jun 2026 |
| 01604 218917 | 2 | 10 Jun 2026 |
| 01604 218980 | 2 | 9 Jun 2026 |
| 01604 218985 | 2 | 9 Jun 2026 |
| 01604 218991 | 2 | 10 Jun 2026 |
| 01604 261508 | 2 | 7 Jun 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 an unwanted number on your phone
- iPhone: open Phone → Recents, tap the (i) next to an unwanted number, scroll down and tap Block this Caller.
- Android: open the Phone app, press and hold an unwanted number in your recent calls, then tap Block / Report spam.
- Network level: EE, O2, Vodafone and Three all offer free spam-call blocking in their app or online account settings.
Report an unwanted number
- Scam texts: forward the message to 7726 (free) — it spells "SPAM" on the keypad — to report it to your mobile network.
- Scam or fraud calls: report to Action Fraud on 0300 123 2040 (England, Wales & NI) or Police Scotland on 101.
- Nuisance / marketing calls: report to the ICO and register with the free Telephone Preference Service (TPS) to reduce unsolicited sales calls.
How to stop unwanted calls for good
Blocking Six Degrees numbers stops that one number, but determined nuisance callers simply switch numbers. These steps cut the volume across the board:
- Silence unknown callers. iPhone: Settings → Apps → Phone → Silence Unknown Callers. Android: open Phone → Settings → Caller ID & spam and turn on filtering. Unknown numbers go straight to voicemail.
- Turn on your network's free spam shield. EE, O2, Vodafone, Three, Sky and most providers offer free spam/scam-call screening in their app or account settings.
- Register with the Telephone Preference Service (TPS). It's free and legally obliges UK companies to stop unsolicited sales calls within 28 days.
- Use a dedicated call-blocker app if nuisance calls are persistent — these screen against live community spam databases and can auto-reject flagged callers before your phone even rings.
- Never engage to "opt out". Pressing a key to be removed only confirms your number is live and usually means more calls.
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.