Comscore is committed to providing the market with transparency into the methods, methodologies, practices and techniques we use in our measurement. To do so, we continuously engage with third-party auditors around the world to prove the soundness of our measurement methods.

See below for many of our accreditations and certifications, as well as the status of our in-progress third-party reviews.

United States

Media Rating Council

Media Rating Council

Comscore TV has been granted accreditation by the Media Rating Council (MRC) for the Total Household Rating and Average Audience estimates in both its national and local TV Time Based Grid reports. This accreditation excludes reporting of households overlayed with age/gender demographic breaks and households with demographic compositions. Read more.

United Kingdom


ABC Limited

Comscore Direct , the census data input to Comscore’s MMX product. Design Effectiveness Review, desktop data for UK sites (2012). Certification, desktop data for UK sites renewed annually since (2013). Design effectiveness review and certification, mobile data for UK sites (2018). Certification for desktop and mobile data extended to include sites in Spain (2019).


Le Centre d’Étude des Supports de Publicité

MMX, Audit successfully completed (2014).

vCE (Validation and Audience 2.0): Audit successfully completed (2017).



Video Comscore provides census measurement of Digital Video for the national Television measurement institute (2015).


Indonesian Digital Measurement Consortium and Bekraf

Comscore selected as Indonesia online audience measurement partner (2016).


Malaysian Digital Association

Comscore appointed as the Official Internet Audience Measurement currency for Malaysia (2013).



Comscore chosen for census measurement of online consumption as part of the national JIC for the Netherlands (2015).


Asociación para la Investigación de Medios de Comunicación

Asociación para la Investigación de Medios de Comunicación

MMX, Audited regularly as part of an ongoing commitment to the JIC for Spain (2012). MMX Multiplatform audited (2014). Mobile Metrix audited (2015).

OJD Interactiva

OJD Interactiva

Comscore Direct , Certified (2012).


Mediamätning i Skandinavien

Video Comscore chosen for daily measurement of online video consumption as part of the national JIC for Sweden (2011).

Video Comscore provides Orvesto Internet panel data for audience measurement of Digital Video (2016).

For additional information on the status of our industry audits, please contact your Comscore representative or email