01923 Area Code - Watford

The 01923 area code is used for Watford (County of Hertfordshire) and the areas directly surrounding Watford, which includes 7 distinct locations. Most 01923 numbers are used for landlines. However, they can also be purchased by companies or organizations to be used for services that don’t have any connection to the Watford area.

Previously, the area used 0923 as their area code. This changed in April 1995 during the phONEday event, where it was changed to the 01923 area code to accommodate the growing population and supplement the shrinking supply of phone numbers in Hertfordshire.

Number Structure

Area CodeNumber
01923xx xxxx

Locations Covered

Cost of calling 01923 numbers

Typically, calls to the 01923 area code are very affordable and are some of the cheapest apart from freephone numbers. During peak times when calling from a landing, expect to pay between 10p to 12p per minute. In the evening or on the weekend, it will cost you between 5p and 10p per minute. If you are calling from a mobile phone, these costs increase to 30p to 50p per minute.

Prefixes and Providers

CodeProviderAssigned
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01923 20BT15/07/1994
01923 21BT15/07/1994
01923 22BT15/07/1994
01923 23BT15/07/1994
01923 24BT15/07/1994
01923 25BT15/07/1994
01923 26BT15/07/1994
01923 27BT15/07/1994
01923 28BT15/07/1994
01923 29BT15/07/1994
01923 30Starcomm Ltd30/01/2001
01923 312Vodafone Ltd (Thus)26/01/2012
01923 318Vodafone Ltd (Thus)26/01/2012
01923 319Vodafone Ltd (Thus)26/01/2012
01923 320Virgin Media Limited27/06/2012
01923 324Virgin Media Limited27/06/2012
01923 33Virgin Media Limited11/07/1995
01923 340Virgin Media Limited27/06/2012
01923 341Virgin Media Limited27/06/2012
01923 342Virgin Media Limited27/06/2012
01923 343Virgin Media Limited27/06/2012
01923 344Virgin Media Limited27/06/2012
01923 345Virgin Media Limited27/06/2012
01923 346Virgin Media Limited27/06/2012
01923 349Virgin Media Limited27/06/2012
01923 35Virgin Media Limited06/11/1996
01923 36Vodafone Ltd (C&W)05/09/2013
01923 370TGL Services (UK) Ltd02/02/2015
01923 371Sky UK Limited28/06/2013
01923 372Kalnet4U Ltd04/06/2013
01923 373Net Solutions Europe Limited03/01/2006
01923 374TelNG Limited01/03/2007
01923 375TTNC Limited15/11/2013
01923 376Orange Business Holdings UK Limited26/02/2013
01923 377Virgin Media Limited12/01/2006
01923 378Colt Technology Services11/05/2006
01923 379Digitech Solutions Global Limited26/06/2012
01923 380VoIP-Un Limited08/11/2007
01923 381Voxbone SA29/01/2008
01923 382Timico Limited15/03/2016
01923 383TelXL Ltd12/02/2008
01923 384Telecom2 Ltd10/09/2009
01923 385Timico Limited04/06/2008
01923 387Nodemax Limited11/07/2008
01923 388TalkTalk Communications Limited14/02/2013
01923 389Pulsant (Scotland) Limited23/03/2009
01923 39Vodafone Ltd (Energis)26/05/2006
01923 400Virgin Media Limited27/06/2012
01923 401Virgin Media Limited27/06/2012
01923 402Virgin Media Limited27/06/2012
01923 403Virgin Media Limited27/06/2012
01923 404Virgin Media Limited27/06/2012
01923 405Virgin Media Limited27/06/2012
01923 406Virgin Media Limited27/06/2012
01923 41Vodafone Ltd (C&W)05/09/2013
01923 42Vodafone Ltd (C&W)05/09/2013
01923 43Vodafone Ltd (C&W)05/09/2013
01923 44Virgin Media Limited16/05/1995
01923 45Virgin Media Limited18/03/2016
01923 46Virgin Media Limited16/05/1995
01923 47BT15/07/1994
01923 48BT15/07/1994
01923 49Virgin Media Limited16/05/1995
01923 504Six Degrees Technology Group Limited14/01/2020
01923 510TalkTalk Communications Limited31/08/2011
01923 517TalkTalk Communications Limited31/08/2011
01923 518TalkTalk Communications Limited31/08/2011
01923 519TalkTalk Communications Limited31/08/2011
01923 521VoiceHost Limited06/10/2010
01923 522Served Up Limited03/06/2008
01923 523Invade International Ltd13/01/2016
01923 524Redcentric Solutions Limited05/06/2015
01923 525Vodafone Ltd (C&W)11/08/2015
01923 526Vodafone Ltd (C&W)20/06/2013
01923 527FleXtel Limited16/11/2005
01923 528Localphone Limited23/05/2007
01923 531Barritec Limited04/10/2012
01923 532Barritel Limited08/10/2008
01923 533Solutios Limited26/11/2008
01923 534IPV6 Limited13/02/2009
01923 535Mars Communications Limited03/02/2009
01923 536Andrews & Arnold (Numbers) Ltd14/04/2009
01923 537Inet Telecoms Ltd (Voipfone)17/11/2008
01923 538Phone Co-Op Numbering Limited23/12/2010
01923 539Relish Networks PLC14/05/2009
01923 540Telecoms World PLC02/07/2009
01923 541CFL Communications Limited20/07/2009
01923 542Vectone Mobile Limited01/07/2009
01923 544Nexus Telecommunications Limited07/10/2009
01923 545BT17/11/2014
01923 547i.net communications Group PLC14/01/2010
01923 548TeleWare Group PLC26/01/2010
01923 549Buzz Networks Limited01/03/2010
01923 550Atomstream Limited13/04/2010
01923 551Liquid 11 Limited19/04/2010
01923 552Suretec Systems Ltd13/05/2010
01923 553Numbergroup Network Ltd02/11/2010
01923 554TeleSurf Limited30/06/2010
01923 555Telappliant Ltd28/06/2010
01923 556Calltracks Limited20/09/2013
01923 557Core Telecom Limited06/08/2010
01923 558Media Telecom Ltd05/08/2010
01923 559Windsor Telecom Ltd22/07/2010
01923 560Test2date B.V11/08/2010
01923 561Plus Telecom Limited24/09/2010
01923 562Sky UK Limited26/06/2013
01923 564Vodafone Ltd (Energis)08/12/2010
01923 565Vodafone Ltd (Energis)08/12/2010
01923 566Daisy Communications Ltd27/10/2010
01923 567Vodafone Ltd (Energis)08/12/2010
01923 568Telephone Box Limited10/12/2010
01923 569Relax Telecom Limited15/08/2014
01923 571Invosys Limited10/04/2012
01923 572IP Wholesale Limited01/06/2017
01923 573Sky UK Limited26/06/2013
01923 574Firstsound Ltd11/04/2011
01923 575Minotaur Telecom Limited01/02/2013
01923 577Numbers Plus Ltd28/07/2011
01923 578Sky UK Limited26/06/2013
01923 579Media Hawk Ltd26/09/2011
01923 58024 SEVEN CLOUD COMMUNICATIONS LTD30/09/2019
01923 581Internexus Networks Limited22/11/2011
01923 582Nexbridge Communications Limited09/01/2012
01923 583Hello Telecom (UK) Limited02/02/2012
01923 584Bicom Systems EURL01/03/2012
01923 585Calltracks Limited12/01/2017
01923 586TalkTalk Communications Limited24/11/2017
01923 587Gamma Telecom Holdings Ltd20/12/2016
01923 588IOVOX Limited31/01/2017
01923 589Gamma Telecom Holdings Ltd16/11/2017
01923 590TalkTalk Communications Limited14/09/2012
01923 591Sky UK Limited26/06/2013
01923 592Sky UK Limited26/06/2013
01923 593Sky UK Limited17/07/2013
01923 594Colt Technology Services05/03/2013
01923 595West Cloud Contact Solutions Ltd15/01/2013
01923 596Vizion Communication Limited04/04/2013
01923 597Sky UK Limited17/07/2013
01923 598XoverX Ltd26/04/2013
01923 599Content Guru Ltd11/10/2012
01923 601Gamma Telecom Holdings Ltd31/01/2013
01923 602Gamma Telecom Holdings Ltd15/11/2012
01923 603Gamma Telecom Holdings Ltd15/11/2012
01923 604Gamma Telecom Holdings Ltd15/11/2012
01923 605Gamma Telecom Holdings Ltd15/11/2012
01923 606Gamma Telecom Holdings Ltd15/11/2012
01923 607Gamma Telecom Holdings Ltd15/11/2012
01923 608Gamma Telecom Holdings Ltd15/11/2012
01923 609Gamma Telecom Holdings Ltd15/11/2012
01923 61BT23/12/2004
01923 620CenturyLink Communications UK Limited11/04/2006
01923 621Commi Holdings Ltd21/11/2016
01923 622CenturyLink Communications UK Limited11/04/2006
01923 623CenturyLink Communications UK Limited11/04/2006
01923 624Simwood eSMS Limited19/07/2006
01923 625(aq) Limited trading as aql27/09/2012
01923 626Teledesign Ltd19/09/2006
01923 627Spitfire Network Services Limited27/06/2006
01923 628Vonage Limited21/01/2015
01923 629Resilient PLC05/01/2007
01923 63BT06/02/2003
01923 640GCI Network Solutions Ltd02/05/2017
01923 65BT22/10/1996
01923 66BT15/07/1994
01923 67BT15/07/1994
01923 68BT15/07/1994
01923 69BT04/03/1996
01923 70Affiniti Integrated Solutions Limited12/04/2000
01923 71BT15/07/1994
01923 72BT15/07/1994
01923 730Inclarity Communications Limited08/11/2012
01923 731Inclarity Communications Limited08/11/2012
01923 732Inclarity Communications Limited08/11/2012
01923 735Inclarity Communications Limited08/11/2012
01923 74Verizon UK Ltd24/11/2004
01923 75AQL Wholesale Ltd01/11/2004
01923 76Syntec Limited16/11/2005
01923 77BT15/07/1994
01923 780Vodafone Ltd (C&W)05/09/2013
01923 781Vodafone Ltd (C&W)05/09/2013
01923 782Vodafone Ltd (C&W)05/09/2013
01923 783Vodafone Ltd (C&W)09/09/2013
01923 784Vodafone Ltd (C&W)09/09/2013
01923 785Vodafone Ltd (C&W)09/09/2013
01923 786Vodafone Ltd (C&W)09/09/2013
01923 787Vodafone Ltd (C&W)09/09/2013
01923 79Easynet Enterprise Services Limited09/11/2005
01923 80BT15/07/1994
01923 81BT15/07/1994
01923 82BT15/07/1994
01923 83BT15/07/1994
01923 84BT15/07/1994
01923 85BT15/07/1994
01923 860Linear Telecoms Limited18/10/2010
01923 861Sky UK Limited26/06/2013
01923 862ICC Networks Ltd13/04/2012
01923 863ICC Networks Ltd18/04/2012
01923 864API Telecom Limited19/04/2012
01923 865Ziron Limited01/08/2012
01923 866Invoco Ltd22/05/2012
01923 867Numbergroup Network Ltd29/04/2019
01923 868IOVOX Limited04/07/2012
01923 869Sky UK Limited26/06/2013
01923 878Connect Telecom UK Ltd19/07/2011
01923 879Connect Telecom UK Ltd19/07/2011
01923 880Magrathea Telecommunications Limited17/11/2011
01923 881Magrathea Telecommunications Limited17/11/2011
01923 882Magrathea Telecommunications Limited17/11/2011
01923 883Magrathea Telecommunications Limited17/11/2011
01923 884Magrathea Telecommunications Limited17/11/2011
01923 886Magrathea Telecommunications Limited17/11/2011
01923 888Magrathea Telecommunications Limited17/11/2011
01923 889Magrathea Telecommunications Limited17/11/2011
01923 89BT15/07/1994
01923 900Net-Work Internet Ltd21/09/2007
01923 901Voiceflex Limited27/09/2007
01923 902Nationwide Telephone Assistance Ltd22/10/2007
01923 903TalkTalk Communications Limited02/05/2014
01923 904Sky UK Limited15/09/2014
01923 905iHub 2 Limited18/05/2016
01923 906Redcentric Solutions Limited05/06/2015
01923 908IOVOX Limited23/10/2014
01923 909Redwood Technologies Ltd15/11/2018
01923 910Gamma Telecom Holdings Ltd30/03/2015
01923 911YayYay Limited24/04/2015
01923 912Affiniti Integrated Solutions Limited18/02/2015
01923 913Colt Technology Services17/04/2015
01923 914Sky UK Limited19/05/2015
01923 915Fido Telecom Limited19/05/2015
01923 916Colt Technology Services05/12/2019
01923 917Metronet (UK) Limited21/05/2019
01923 919Gamma Telecom Holdings Ltd05/05/2015
01923 920Gamma Telecom Holdings Ltd08/04/2016
01923 921Belgacom International Carrier Services SA20/06/2016
01923 922Hemshore Ltd16/05/2016
01923 923NFON UK Ltd.29/04/2016
01923 924Hyperoptic Ltd31/08/2016
01923 925Adepteo Limited29/11/2016
01923 926Adepteo Limited29/11/2016
01923 927Gamma Telecom Holdings Ltd26/09/2016
01923 928Fuse 2 Communications Ltd03/07/2017
01923 930Orbtalk Limited01/12/2017
01923 931Entanet International Ltd12/12/2017
01923 932Gamma Telecom Holdings Ltd03/04/2018
01923 933Zapappi Ltd19/10/2017
01923 934Sky UK Limited03/07/2018
01923 935Club Communications13/08/2018
01923 936Gamma Telecom Holdings Ltd29/08/2018
01923 937DIDWW Ireland Limited15/10/2018
01923 938Antheus Telecom Limited06/02/2018
01923 939IP Voice Networks Ltd20/09/2017
01923 940BT04/07/2019
01923 941TalkTalk Communications Limited01/08/2019
01923 942Dial 9 Communications Limited18/10/2019
01923 943Colt Technology Services03/01/2019
01923 944Gamma Telecom Holdings Ltd04/01/2019
01923 945ICUK Computing Services Limited20/09/2019
01923 946BT12/04/2019
01923 947Gamma Telecom Holdings Ltd01/08/2019
01923 948Gamma Telecom Holdings Ltd03/05/2019
01923 949Epsilon Telecommunications Ltd15/04/2019
01923 951Hyperoptic Ltd11/11/2019
01923 954Gamma Telecom Holdings Ltd04/11/2019
01923 955BT12/12/2007
01923 956BT12/12/2007
01923 957BT12/12/2007
01923 958BT12/12/2007
01923 971Sky UK Limited19/10/2015
01923 972Sky UK Limited19/10/2015
01923 973I.T Communications Limited09/11/2015
01923 974Mintaka Limited12/05/2016
01923 975Gamma Telecom Holdings Ltd02/08/2017
01923 976Number Services Ltd.22/11/2018
01923 977AQL Wholesale Ltd01/06/2015
01923 979Gamma Telecom Holdings Ltd11/06/2015

Map of Watford

Other Area Codes in this County (Hertfordshire)

CodeCity
01279Bishops Stortford
01438Stevenage
01442Hemel Hempstead
01462Hitchin
01707Welwyn Garden City
01727St Albans
01763Royston
01920Ware

All Area Codes About 01, 02 Numbers