Range holder
Colt Technology Services
Colt Technology Services is listed by Ofcom as the originally-allocated provider for 2,025 UK number ranges, mostly landline (01/02). Visitors have checked 282 different numbers from its ranges here. Numbers within these blocks may have since been ported to a different carrier.
Colt Technology Services at a glance
- Number ranges
- 2,025
- Number types
- Landline (01/02) 1,698
- UK-wide (03) 110
- Premium rate (09) 88
- Service (084/087) 63
- Freephone (080) 33
- Personal (070) 24
- Corporate / VoIP (05) 7
- Other 2
- First allocation
- 17 January 1996
- Latest allocation
- 23 September 2026
Source: Ofcom numbering data, re-imported weekly. Each range is counted once.
Allocated ranges by year
The year Ofcom allocated each range Colt Technology Services still holds; the busiest year was 2016 (344).
19961
199725
199845
199945
200013
200115
200252
20036
200433
200515
200625
200782
200821
200922
20107
201147
201223
201367
201418
2015220
2016344
201752
2018157
2019105
2020178
2021128
202280
202368
202450
202549
202628
What people check and report about numbers on Colt Technology Services ranges
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.
- Checks
- 301
- Different numbers checked
- 282
- Different people checking
- 289
That makes numbers on Colt Technology Services ranges the 14th most-checked of the 186 range holders people have looked up here.
By day of the week
Busiest: Tuesday (28% of checks)
MoTuWeThFrSaSu
By hour (UK time)
Busiest: 12pm–1pm; the three busiest hours hold 34% of checks
0:006:0012:0018:0023:00
Caller verdicts on numbers on Colt Technology Services ranges: 5
Scam 80% (4) · Nuisance 20% (1) · Safe 0% (0)
Most-reported and most-checked numbers on Colt Technology Services ranges
| Number | Verdicts | Reports | People checking |
|---|---|---|---|
| 0113 486 2984 | 1 scam | — | 4 |
| 01543 384136 | 1 scam | — | 1 |
| 01753 935881 | 1 nuisance | — | 1 |
| 01756 556739 | 1 scam | — | 1 |
| 020 8080 6501 | 1 scam | — | 1 |
If a number from Colt Technology Services's ranges called you
Most verdicts on these numbers say scam, so treat unexpected calls as possible scams.
- 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
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
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 Colt Technology Services rangesfirst 1,000 of 2,025, by prefix
| Prefix | Status |
|---|---|
| +44 113360 | Allocated |
| +44 113486 | Allocated |
| +44 113524 | Allocated |
| +44 113526 | Allocated |
| +44 113539 | Allocated |
| +44 113541 | Allocated |
| +44 113543 | Allocated |
| +44 113550 | Allocated |
| +44 114212 | Allocated |
| +44 114504 | Allocated |
| +44 114700 | Allocated |
| +44 114704 | Allocated |
| +44 114706 | Allocated |
| +44 115654 | Allocated |
| +44 115678 | Allocated |
| +44 115857 | Allocated |
| +44 116218 | Allocated |
| +44 116504 | Allocated |
| +44 117313 | Allocated |
| +44 117457 | Allocated |
| +44 117471 | Allocated |
| +44 117476 | Allocated |
| +44 117486 | Allocated |
| +44 117936 | Allocated |
| +44 118206 | Allocated |
| +44 118228 | Allocated |
| +44 118234 | Allocated |
| +44 118242 | Allocated |
| +44 118370 | Allocated |
| +44 118391 | Allocated |
| +44 118991 | Allocated |
| +44 1200377 | Allocated |
| +44 1200864 | Allocated |
| +44 1202006 | Allocated |
| +44 1202014 | Allocated |
| +44 1202016 | Allocated |
| +44 1202025 | Allocated |
| +44 1202112 | Allocated |
| +44 1202122 | Allocated |
| +44 1202132 | Allocated |
| +44 1202138 | Allocated |
| +44 1202155 | Allocated |
| +44 1202156 | Allocated |
| +44 1202158 | Allocated |
| +44 1202164 | Allocated |
| +44 1202168 | Allocated |
| +44 1204356 | Allocated |
| +44 1204588 | Allocated |
| +44 1204808 | Allocated |
| +44 1204906 | Allocated |
| +44 1204936 | Allocated |
| +44 1204954 | Allocated |
| +44 1205616 | Allocated |
| +44 1205632 | Allocated |
| +44 1206258 | Allocated |
| +44 1206414 | Allocated |
| +44 1206416 | Allocated |
| +44 1206675 | Allocated |
| +44 1206696 | Allocated |
| +44 1207788 | Allocated |
| +44 1207817 | Allocated |
| +44 1208244 | Allocated |
| +44 1209874 | Allocated |
| +44 1209909 | Allocated |
| +44 121121 | Allocated |
| +44 121260 | Allocated |
| +44 121281 | Allocated |
| +44 121295 | Allocated |
| +44 121393 | Allocated |
| +44 121720 | Allocated |
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| +44 1223645 | Allocated |
| +44 1223735 | Allocated |
| +44 1223736 | Allocated |
| +44 1223737 | Allocated |
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| +44 1223739 | Allocated |
| +44 1223752 | Allocated |
| +44 1223772 | Allocated |
| +44 1223783 | Allocated |
| +44 1223856 | Allocated |
| +44 1223865 | Allocated |
| +44 1223935 | Allocated |
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| +44 1223982 | Allocated |
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| +44 1224012 | Allocated |
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| +44 1224021 | Allocated |
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| +44 1245955 | Allocated |
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| +44 1250355 | Allocated |
| +44 1252224 | Allocated |
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| +44 1252450 | Allocated |
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| +44 1253742 | Allocated |
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| +44 1254648 | Allocated |
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| +44 1255568 | Allocated |
| +44 1255615 | Allocated |
| +44 1256208 | Allocated |
| +44 1256436 | Allocated |
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| +44 1256644 | Allocated |
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| +44 1256976 | Allocated |
| +44 1257542 | Allocated |
| +44 1257822 | Allocated |
| +44 1258558 | Allocated |
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| +44 1260765 | Allocated |
| +44 1261504 | Allocated |
| +44 1262377 | Allocated |
| +44 1263676 | Allocated |
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| +44 1264604 | Allocated |
| +44 1267887 | Allocated |
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| +44 1268432 | Allocated |
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| +44 1269616 | Allocated |
| +44 1270310 | Allocated |
| +44 1270692 | Allocated |
| +44 1270904 | Allocated |
| +44 1270917 | Allocated |
| +44 1271615 | Allocated |
| +44 1271633 | Allocated |
| +44 1271634 | Allocated |
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| +44 1273013 | Allocated |
| +44 1273023 | Allocated |
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| +44 1282525 | Allocated |
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| +44 1285445 | Allocated |
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| +44 1296846 | Allocated |
| +44 1296872 | Allocated |
| +44 1297811 | Allocated |
| +44 1298446 | Allocated |
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| +44 1300272 | Allocated |
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| +44 1302495 | Allocated |
| +44 1302540 | Allocated |
| +44 1302543 | Allocated |
| +44 1303472 | Allocated |
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| +44 1304272 | Allocated |
| +44 1304353 | Allocated |
| +44 1305571 | Allocated |
| +44 1305595 | Allocated |
| +44 1306306 | Allocated |
| +44 1306318 | Allocated |
| +44 1306326 | Allocated |
| +44 1307724 | Allocated |
| +44 1308333 | Allocated |
| +44 1309763 | Allocated |
| +44 131372 | Allocated |
| +44 131376 | Allocated |
| +44 131380 | Allocated |
| +44 131392 | Allocated |
| +44 131460 | Allocated |
| +44 131626 | Allocated |
| +44 1320604 | Allocated |
| +44 1322640 | Allocated |
| +44 1322643 | Allocated |
| +44 1322924 | Allocated |
| +44 1322940 | Allocated |
| +44 1322956 | Allocated |
| +44 1323385 | Allocated |
| +44 1323674 | Allocated |
| +44 1323923 | Allocated |
| +44 1324323 | Allocated |
| +44 1324354 | Allocated |
| +44 1325633 | Allocated |
| +44 1325654 | Allocated |
| +44 1325792 | Allocated |
| +44 1325794 | Allocated |
| +44 1326454 | Allocated |
| +44 1326536 | Allocated |
| +44 1327617 | Allocated |
| +44 1327636 | Allocated |
| +44 1327645 | Allocated |
| +44 1328636 | Allocated |
| +44 1329277 | Allocated |
| +44 1329757 | Allocated |
| +44 1329761 | Allocated |
| +44 1330494 | Allocated |
| +44 1332278 | Allocated |
| +44 1332401 | Allocated |
| +44 1332423 | Allocated |
| +44 1332438 | Allocated |
| +44 1332451 | Allocated |
| +44 1332473 | Allocated |
| +44 1332505 | Allocated |
| +44 1332532 | Allocated |
| +44 1332588 | Allocated |
| +44 1332922 | Allocated |
| +44 1333831 | Allocated |
| +44 1334784 | Allocated |
| +44 1335682 | Allocated |
| +44 1337616 | Allocated |
| +44 1339336 | Allocated |
| +44 1340504 | Allocated |
| +44 1341475 | Allocated |
| +44 1342360 | Allocated |
| +44 1342363 | Allocated |
| +44 1342646 | Allocated |
| +44 1343344 | Allocated |
| +44 1344535 | Allocated |
| +44 1344558 | Allocated |
| +44 1344585 | Allocated |
| +44 1344838 | Allocated |
| +44 1344919 | Allocated |
| +44 1344924 | Allocated |
| +44 1344944 | Allocated |
| +44 1344953 | Allocated |
| +44 1344954 | Allocated |
| +44 1344955 | Allocated |
| +44 1344968 | Allocated |
| +44 1346786 | Allocated |
| +44 1347487 | Allocated |
| +44 1348498 | Allocated |
| +44 1349627 | Allocated |
| +44 1350505 | Allocated |
| +44 1352406 | Allocated |
| +44 1352609 | Allocated |
| +44 1353494 | Allocated |
| +44 1353515 | Allocated |
| +44 1354564 | Allocated |
| +44 1355711 | Allocated |
| +44 1355724 | Allocated |
| +44 1356556 | Allocated |
| +44 1357405 | Allocated |
| +44 1358584 | Allocated |
| +44 1359353 | Allocated |
| +44 1360386 | Allocated |
| +44 1361353 | Allocated |
| +44 1362545 | Allocated |
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| +44 1364804 | Allocated |
| +44 1366664 | Allocated |
| +44 1367617 | Allocated |
| +44 1368484 | Allocated |
| +44 1369566 | Allocated |
| +44 1371512 | Allocated |
| +44 1372569 | Allocated |
| +44 1372648 | Allocated |
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| +44 1376428 | Allocated |
| +44 1376804 | Allocated |
| +44 1377827 | Allocated |
| +44 1379454 | Allocated |
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| +44 1389548 | Allocated |
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| +44 1394242 | Allocated |
| +44 1395874 | Allocated |
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Per-area pages
Related lookups
- Colt Technology Services scam & spam reportsCommunity-reported numbers on this holder's ranges
- 020 London216 Colt Technology Services ranges
- 028 Northern Ireland43 Colt Technology Services ranges
- 01223 Cambridge23 Colt Technology Services ranges
- 01483 Guildford18 Colt Technology Services ranges
- 01865 Oxford17 Colt Technology Services 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 Colt Technology Services is the range holder?
Ofcom allocated the blocks listed on this page to Colt Technology Services. 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 Colt Technology Services hold?
Of its 2,025 allocated ranges: 1,698 landline (01/02), 110 uk-wide (03), 88 premium rate (09), 63 service (084/087), 33 freephone (080), 24 personal (070), 7 corporate / voip (05), 2 other. The oldest dates from 17 January 1996 and the newest from 23 September 2026.
Which area codes does Colt Technology Services have most numbers in?
By allocated blocks: 020 London (216), 028 Northern Ireland (43), 01223 Cambridge (23), 01483 Guildford (18), 01865 Oxford (17).
Are numbers from Colt Technology Services's ranges reported as scams?
Visitors have checked 282 different numbers from these ranges here since May 2026. 5 verdicts have been left on them: 4 scam, 1 nuisance, 0 safe. A scam verdict is about the caller using the number, not Colt Technology Services.
How often is the Colt Technology Services list updated?
Ofcom publishes its numbering data every Wednesday and this page is rebuilt from it weekly, so new Colt Technology Services blocks appear within about a week.