Number range
01733 56xxxx
Ofcom’s records for the block of 10,000 numbers that start 0173356, and any numbers in it that we hold other information about.
What Ofcom’s records say
- Allocated to
- BT
- The provider Ofcom gave the block to
- Ofcom status
- Allocated
- Allocated on
- 30 October 1997
- Numbers in block
- 10,000 numbers
- Number length
- 11 digits
Source: Ofcom numbering data, files published 7 October 2026, checked 13 October 2026
Ofcom has allocated this block of numbers to BT.
Ofcom allocates phone numbers to communications providers in blocks. The provider shown is the one Ofcom allocated this block to. It is not the person or business that called you, and the number may since have moved to a different network, because people can usually keep their number when they switch provider. Ofcom does not hold information about individual numbers.
Numbers in this range we know about
Numbers an organisation lists on its own website or in an official register, and numbers at least 3 visitors have reported.
- 01733 562784
- School: Woodston Primary School
- 01733 562873
- School: Southfields Primary School
- 01733 563180
- School: Welland Academy
- 01733 563566
- School: St Augustine's CofE (Voluntary Aided) Junior School
- 01733 563688
- School: All Saints' CofE (Aided) Primary School
- 01733 564144
- Pharmacy: West Town Pharmacy
- 01733 565092
- School: Brewster Avenue Infant School
- 01733 565423
- Pharmacy: Dogsthorpe Pharmacy
- 01733 566005
- School: St Thomas More Catholic Primary School
- 01733 566053
- School: Newark Hill Academy
- 01733 566237
- School: Oakdale Primary School
- 01733 566847
- School: Lime Academy Abbotsmede
- 01733 566849
- School: Dogsthorpe Infant School
- 01733 566990
- School: Fulbridge Academy
- 01733 567208
- Pharmacy: Masters Pharmacy
- 01733 568058
- School: Marshfields School
Contains public sector information from Department for Education, "Establishment fields CSV" (13 October 2026), licensed under the Open Government Licence v3.0.
Contains public sector information from NHS England (Organisation Data Service), "Pharmacies (edispensary)" (13 October 2026), licensed under the Open Government Licence v3.0.
Sources and checks
This page relies on:
Checked on 13 October 2026. Read how reports work. How we check our information. Spotted a mistake? Tell us and we will put it right.