Companies covered
The following communications providers are registered with CISAS and are listed in alphabetical order. If your communications provider has told you that they are a member of CISAS but they are not on this list then please contact us.
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1823 Group Limited
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1GLOBAL
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4G Mobiles & Data Ltd
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4G Mobiles and Data Ltd
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4tech
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4th Utility Holdings Limited
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AAISP
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Accelerator Limited
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Acorn Networks Services
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Advania UK Limited
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AirFast
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Airlinq
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AIT Partnership Group Limited
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AJRB Services Limited
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Allfour Technologies Ltd
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Alncom
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Alnwick Computerware
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Aloha Numbers
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Aloha Telecommunications Ltd
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Amatis Networks
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Amplify
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Amvia
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Andrews & Arnold Ltd
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Arcom ICT
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Arcom IT Ltd
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Arena Birmingham
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Ariel Online Services
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ASDA Mobile
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Aspen Solutions Ltd
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Astaris
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Atom IP Ltd
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Aurora Managed Services
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Babble Cloud
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Barclay Communications
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Barclay Digital Services
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Barclay Digital Services Limited
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Beeline Broadband Ltd
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Bespoke Telephony Solutions Limited
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Beyond Connectivity
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BIC Telecoms
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Blaucomm Ltd
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Bleckfield Ltd
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Bluebox Broadband
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Bongo IT
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Borders Online Limited
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Borders Online Ltd
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Boshhh Ltd
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Brave New World Group Ltd
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Brdy Broadband LTD
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Brighter Bills
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Briskona Ltd
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Britannic Technologies
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Broadband NI
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BSG TELECOM LIMITED
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Burstfire Networks Ltd
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BusinessMovers. Tech Limited
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BusinessMovers.Tech Limited (BMT)
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Buzz Networks Limited
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Byte by Byte Ltd
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Callroute
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Calma Technology Limited
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Camping Connect
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Castle Telecom
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CAT Sat Wales
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CATalyst Systems North Wales Ltd
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Chase Communications
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Chaser Communications Ltd
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Chess ICT Limited
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Chess Telecom
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ChunkyChips.net Ltd
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Cirrus IT Services (UK) Limited
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Citrus Telecommunications Ltd
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Claranet Limited
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Clarion Communication Management Ltd
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Clarity Telecom Ltd
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Class Affinity Projects Ltd
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Class Networks
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Clear Picture Services Limited
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Cloud Phone Company Ltd
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Cobus Communications Group
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Cobus Ltd
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Code Technology Limited
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Com Systems
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COM-TEL Telecom Ltd
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Comms Connect
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Comms UK Ltd
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Comms Unite Limited
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Communications Solutions UK Ltd
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Community Information Technology
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Commworx Ltd
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Compare Fibre
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Compatibility Limited
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Computer And Network Consultants Ltd
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Computer Systems UK Ltd
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Comvista Networks Limited
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Connect It All Ltd
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Connect Managed Services (UK) Limited
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Contedia Limited
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Convergence (Group Networks) Limited
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Convergence (Group Networks) Ltd
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Converj Ltd
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Cornerstone Business Solutions Ltd
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Corona Corporate Solutions
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CRE Communications Ltd
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Crockham Hill CIC
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Crystaline Solutions Limited
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CTR Communications Limited
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CTR Services Uk
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Dark Group Ltd
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Data Consulting Services Ltd
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Datanet.co.uk Limited
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DG Technology
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Digisolutions Ltd
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Digital Communications
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Digital Fibre Connections Limited
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Digital Mobile Spectrum Limited
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Direct Telecommunication Systems Limited
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Direct Voice and Data
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DPS Tech
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DPS Technology Group (DPSTECH)
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Dualtone Communications Ltd
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Dunedin IT
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Dunston Business Village
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Earth Broadband
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Eclipse Broadband – Telecom Acquisitions Limited
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Eclipse Telecom Networks Ltd
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Eclipse Wholesale
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Eden Telecom
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Engine Mobile Ltd
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Equiinet
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Everfibre
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Everflow Telecoms Limited
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Evernet
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Evertalk
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Exponential-e
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Eze Talk Ltd
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F One Technologies Ltd
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File Sanctuary Ltd
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Firstcom Europe Ltd
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Fleur Telecom – Telecom Acquisitions Limited
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Flexspace No1 LLP
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Fluent2 Limited
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Force 36 Limited
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Fractal Telecom Services Limited
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Freestyle Communications Ltd
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Fuse Telecom
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Future Communications UK
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GCI Network Services
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Gigs U.K. Ltd
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Globe Touch AB
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GoFibre Broadband Limited
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Gold Connections Ltd
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Gower Coast IT Solutions LTD (GC Broadband)
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GPS Telecom Limited
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GPS Telecoms Ltd
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Grain Connect Limited
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Green Colo Ltd
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Green Connect
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Green ISP
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Green WebHost
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Hampshire Broadband Ltd
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Helpline Limited
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HES Services NW Ltd
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HeyBroadband Limited
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HII Communications Ltd
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Home Telecom – Telecom Acquisitions Limited
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Home Unity Ltd
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Honest Enterprises
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Honest Mobile
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Hotsplots GmbH
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I.T Communications Ltd
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Ice Telecommunications Ltd
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ICT Studio Limited
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Ikon ICT Limited
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Immervox Limited
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Imperial Telecom Limited
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Ingenious
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Ingenious Ltd
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Inspire Telecom Limited
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Intec Connections
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Integrated Business Telecommunications Ltd
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Integrated Network Services Ltd
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Intercity Technology Limited
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Internet Connections Ltd
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Internet For Business Ltd
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Invew Telecom Ltd
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Invoco Ltd (Telecom)
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IP Base
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IP Exchange Ltd
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IP Voice networks
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IT Clinic London Ltd
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iTalk Affiliate Telecommunications Ltd
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ITG Ltd
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ITWiser Comms Ltd
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Jaguar Telecom Ltd
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Javelin Broadband Ltd
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JDMN Telecommunications LTD
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Jellyfish Broadband
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Jellyfish Technologies Ltd
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JMAM Enterprises Ltd
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Kane Cloud Communications Ltd
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Kijoma Solutions Ltd (Kijoma Broadband)
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Komputrade Ltd
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KSM Communications Ltd
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Kube Networks Ltd
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Kuiper Technology Limited
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Kuipertech
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L A Comms Ltd
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LAN3 Limited
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Lancashire County Council
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Lanonyx Telecom Ltd (Voxcloud)
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Lansalot Ltd
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Lascom Solutions Ltd
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LILA Connect Limited
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Lister Communications Ltd
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Lister Unified Communications (Fieldtalk)
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Locallnet Ltd
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Lothian Broadband Networks Limited
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Lotus Telecom (UK Wholesale Direct)
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Love Voip
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Lycamobile
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M-Tech Systems Ltd
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Merula Limited
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Method B Ltd
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Metranet Communications Ltd
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Mirus IT Solutions Limited
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Mirus Telephony Limited
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MMS Comms Ltd
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Morgan
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Mouse UK Limited (Telecommunication Services)
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My Business Number
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Nasstar Limited
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National Business Communications Ltd
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Natpoint Ltd
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NEC Group Venue Partnerships
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NetConnex Broadband Ltd
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Netmatters Limited
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Network Fusion LLP (Fusion Voice and Data)
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Network Sales and Solutions Limited
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Newman Business Solutions Ltd (EE, o2,Vodafone, Gamma, Pragma, LG-Ericsson, Microsoft)
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Northsat Limited
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NOW
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Number People
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Octaplus Supercharged LTD
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One Tek Business Solution
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Onecom
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Orbit Tech
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OrbitTech
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OrbitTech Limited
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Oricom Ltd
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Outline Communication Ltd
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ParentShield
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PBX Hosting
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Peak Telecom UK Limited
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Perceptive 0n line
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Perceptive on line
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Phase 5 Communications Ltd
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PhonePresence
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POP Telecom
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Primary PC Solutions
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Prime Connect Ltd
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Probado Limited
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Protect and Connect Ltd
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PSX Digital Ltd
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Pulse Fibre Ltd
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Puzzle Technology Ltd
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Rade Internet
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Rade New Media Limited
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Rade Systems
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Razorblue Ltd
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Red Dragon I.T. Limited
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Resorts World Arena
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Restore TV
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RingCentral
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RingCentral UK Ltd
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Roebuck Communications Ltd
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Russell Telecom
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Ryedale Communications LLP
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Saturday Cloud Ltd
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Save9 Ltd
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SCUKCO Ltd
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ServerHouse
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Simple Telecommunications Ltd
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Simple Telecoms Ltd
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Simply Mobile (NI) Ltd
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Sipsynergy Limited
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Sitech Solutions Limited
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SiteHQ
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Sky
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Sky Business
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Skyline Networks and Consultancy Ltd
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SLICE MOBILE HOLDING COMPANY LIMITED
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Smart Connect Telecom Limited
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Smart IT
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Smart IT Support Ltd
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Social Comms UK Ltd
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Softlink Computer Systems Ltd
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Softlink Computer Systems Ltd
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South East Business Systems Ltd (SEBS IT)
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SpaceX
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Speedster-IT Ltd
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Spiffy Dog
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Spire Business Communications Ltd
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Spire Technology Group
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Starlink Internet Services Limited
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Stix Internet Ltd
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Storacall Technology
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Stripe 21 Group Limited
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Surgery Connect
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Switch In Ltd
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Switch Numbers
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Symmetris Broadband
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Syscomm Ltd
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Talk247
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TalkMobile
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TalkTalk Group (including Shell Energy Broadband)
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Techsapiens Ltd
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Tela Technology Limited
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Telcoinabox
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Telecom Acquisitions Limited
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Telecom2 Limited
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Telecom2 Ltd
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Terahost Ltd
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Tetrabyte Ltd
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Tetralogic Ltd
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Tetraphones
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The Cellphone Store Limited
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The Cent.re Group Limited
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The ICC
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The National Exhibition Centre Limited
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The NEC Group
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The Networking People (TNP) Ltd
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The Primo Partnership
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The Vox
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TIC (The Independent Choice) Ltd (Telecommunications)
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Tiree Broadband
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To The Moon Mobile Limited
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Touch Telecommunications Limited
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TP Global Operations Limited
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Transparent Telecom Limited
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Truespeed Communications Ltd
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Truphone
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TwentyFirst Century Network Solutions Ltd
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Two Peas in a Pod
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UK Wholesale (UK Wholesale Direct)
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UK Wholesale Direct
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UKW (UK Wholesale Direct)
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Unchained ISP Limited
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Unity CSP Ltd
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Unity World Ltd
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UniverCell
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uno Communications Ltd
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V12 Telecom Ltd
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Vaioni Group Ltd
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Virtual Landline
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Virtual Talk Limited
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Virtually Local Ltd
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Vision Mobile UK Ltd
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Vision Telecom Solutions
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Vision Voice and Data
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Visional Media Limited
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Vivi Voip
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Vodafone
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Vodafone Partner Services
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VoIP Yonder
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VoltHosting Ltd
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VPW Systems (UK) Ltd
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VX Fiber Limited
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Wavenet Limited
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Webeye Ltd
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WebeyeCMS
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WebMate Internet Services Limited
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Wells Fargo – WFBI – Ireland
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White Tiger Group Limited
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Will Wright Technical Services Limited
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Wispire Ltd
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Worktual Limited
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X-Fibre Ltd
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X-on Health Ltd
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X2 Communications Ltd
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XD Retail LLP
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Xifos
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Xtra Dog
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Xtra Dog Academy
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Xtra Dog Design
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Xtra Dog Training
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Yayzi Broadband Limited
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Yourcom Limited
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YSH Managed Hosting
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Zable Mobile
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Zarro
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Zarro Broadband
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Zarro Broadband
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Zarro Communications
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Zarro Communications
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Zen Internet Limited
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Zen Systems Ltd