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Range holder

DIDWW Ireland Limited

DIDWW Ireland Limited is listed by Ofcom as the originally-allocated provider for 576 UK number ranges, mostly landline (01/02). Visitors have checked 421 different numbers from its ranges here. Numbers within these blocks may have since been ported to a different carrier.

DIDWW Ireland Limited at a glance

Number ranges
576
Number types
  • Landline (01/02) 572
  • UK-wide (03) 2
  • Freephone (080) 2
First allocation
7 April 2014
Latest allocation
1 August 2023
Most blocks in
028 Northern Ireland, 020 London, 0191 Tyneside / Newcastle / Sunderland / Durham

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

Allocated ranges by year

The year Ofcom allocated each range DIDWW Ireland Limited still holds; the busiest year was 2019 (241).

201418
201610
201720
201820
2019241
2020240
202123
20222
20232

What people check and report about numbers on DIDWW Ireland Limited 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
481
Different numbers checked
421
Different people checking
454

That makes numbers on DIDWW Ireland Limited ranges the 11th most-checked of the 186 range holders people have looked up here.

By day of the week

Busiest: Monday (20% of checks)

MoTuWeThFrSaSu

By hour (UK time)

Busiest: 4pm–5pm; the three busiest hours hold 33% of checks

0:006:0012:0018:0023:00

Caller verdicts on numbers on DIDWW Ireland Limited ranges: 12

Scam 83% (10) · Nuisance 8% (1) · Safe 8% (1)

Latest comments

  • “"Energy Adviser" SCAMMERS”

    Scam · 020 8157 7404 · 1 Oct 2026

  • “To be honest i couldn't understand a word he was saying and who he wanted. Still think it was scam phone call.”

    Scam · 020 8073 1528 · 29 Sept 2026

  • “was the gp practice advising on an update on my meds all good”

    Safe · 0330 027 1235 · 30 Aug 2026

Most-reported and most-checked numbers on DIDWW Ireland Limited ranges

NumberVerdictsReportsPeople checking
0121 790 06711 nuisance—3
0141 536 07121 scam—2
0118 464 02261 scam—1
01234 4160241 scam—1
01302 4381761 scam—1

If a number from DIDWW Ireland Limited's ranges called you

Most verdicts on these numbers say scam, so treat unexpected calls as possible scams.

  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

    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 DIDWW Ireland Limited ranges576, by prefix
PrefixStatus
+44 113490Allocated
+44 114463Allocated
+44 115794Allocated
+44 116393Allocated
+44 117409Allocated
+44 118464Allocated
+44 1200862Allocated
+44 1202080Allocated
+44 1204918Allocated
+44 1205637Allocated
+44 1206690Allocated
+44 1207801Allocated
+44 1208637Allocated
+44 1209870Allocated
+44 121790Allocated
+44 1223931Allocated
+44 1224015Allocated
+44 1224928Allocated
+44 1225535Allocated
+44 1226652Allocated
+44 1227943Allocated
+44 1228935Allocated
+44 1229457Allocated
+44 1233541Allocated
+44 1234416Allocated
+44 1235619Allocated
+44 1236901Allocated
+44 1237749Allocated
+44 1239735Allocated
+44 1241482Allocated
+44 1242591Allocated
+44 1243346Allocated
+44 1244739Allocated
+44 1245969Allocated
+44 1246952Allocated
+44 1248562Allocated
+44 1249905Allocated
+44 1250357Allocated
+44 1252954Allocated
+44 1253544Allocated
+44 1254929Allocated
+44 1255614Allocated
+44 1256594Allocated
+44 1257825Allocated
+44 1258927Allocated
+44 1259797Allocated
+44 1260764Allocated
+44 1261507Allocated
+44 1262387Allocated
+44 1263684Allocated
+44 1264592Allocated
+44 1267645Allocated
+44 1268389Allocated
+44 1269627Allocated
+44 1270438Allocated
+44 1271640Allocated
+44 1273004Allocated
+44 1274066Allocated
+44 1275615Allocated
+44 1276982Allocated
+44 1277679Allocated
+44 1278572Allocated
+44 1279975Allocated
+44 1280491Allocated
+44 1282951Allocated
+44 1283380Allocated
+44 1284662Allocated
+44 1285429Allocated
+44 1286518Allocated
+44 1287856Allocated
+44 1288713Allocated
+44 1289784Allocated
+44 1290845Allocated
+44 1291493Allocated
+44 1292379Allocated
+44 1293904Allocated
+44 1294703Allocated
+44 1295570Allocated
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+44 1942934Allocated
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+44 2896205Allocated
+44 2897178Allocated
+44 292255Allocated
+44 330027Allocated
+44 330184Allocated
+44 8001026Allocated
+44 8002081Allocated

Per-area pages

Related lookups

Frequently asked questions

What does it mean that DIDWW Ireland Limited is the range holder?

Ofcom allocated the blocks listed on this page to DIDWW Ireland 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 DIDWW Ireland Limited hold?

Of its 576 allocated ranges: 572 landline (01/02), 2 uk-wide (03), 2 freephone (080). The oldest dates from 7 April 2014 and the newest from 1 August 2023.

Which area codes does DIDWW Ireland Limited have most numbers in?

By allocated blocks: 028 Northern Ireland (29), 020 London (6), 0191 Tyneside / Newcastle / Sunderland / Durham (3), 01224 Aberdeen (2), 01387 Dumfries (2).

Are numbers from DIDWW Ireland Limited's ranges reported as scams?

Visitors have checked 421 different numbers from these ranges here since May 2026. 12 verdicts have been left on them: 10 scam, 1 nuisance, 1 safe. A scam verdict is about the caller using the number, not DIDWW Ireland Limited.

How often is the DIDWW Ireland Limited list updated?

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