IWF URL List Recipients

The Internet Watch Foundation (IWF) provides a dynamic list of individual web pages with child sexual abuse content to its members, companies within their group and Licensees that have the ability to filter and block access to such content.

The following Member companies and Licensees have voluntarily committed to block access to child sexual abuse web pages thereby protecting consumers of their services from being inadvertently exposed to such content. The list is supplied to IWF Members including internet service providers, mobile operators, search and content providers and filtering companies as well as to Licensees. The companies below may deploy the list in different ways across some or all of their services and technology platforms.

There is an agreed self-certification process for verifying that those providers listed below as blocking URLs included in the list are testing their systems for doing so. 

If you have any queries regarding your provider please contact them directly. For more information on the blocking initiative see here

Internet Service Providers (ISPs) and Mobile Operators

British Sky Broadcasting (Sky/ BskyB)

British Telecom (BT)

Claranet Soho

East of England Broadband Network (E2BN)

Easynet (incl. MDNX)

EE (includes the Orange and T-Mobile brands)

Exa Networks

Hutchison 3G UK Ltd Three (3)

KCom (including Eclipse, Karoo)

Manx Telecom

O2 Telefonica 

RedCentric Solutions Ltd

TalkTalk Telecom Ltd

Tesco plc

Virgin Media Ltd

Vodafone Group Services Ltd

Yorkshire and Humber Grid for Learning (YHGfL)


Search and Content Providers

British Broadcasting Corporation (BBC)
IAC Search & Media (Ask Jeeves, Ask.com)
Microsoft (Bing)
Filtering Companies

Allot Communications (including Allot Comms Spain - Optenet)
Barracuda Networks*
Blue Coat Systems Inc.
CensorNet Ltd
Cisco Systems Inc.
Fortinet Technologies Inc.
Lightspeed Systems (Europe) Ltd
Logicalis UK
NetClean Technologies AB (Safer Society Group Sweden AB)
OpenDNS Inc.*
Openwave Mobility
Palo Alto Networks

Procera Networks Inc.

RedCentric Solutions Ltd

RM Education Ltd (Research Machines)

RuleSpace Symantec


Sophos (Cyberoam Technologies)
Webroot Inc.

ZScaler Inc.
Zvelo Inc.



Cricket Communications

*Member companies must complete a successful full four quarters of testing and submission of test results to IWF in order to achieve full compliance. Member companies followed by an asterisk are currently in the testing phase, and not yet fully compliant. 

Co-funded by the European Union Safer Internet Thinkuknow INHOPE UK Council for Child Internet Safety Investors In People Child rights Connect Nominet European Financial Coalition