What is the problem?

PSI has been working with publishers for many years, helping them to detect, investigate and prosecute subscription fraud. In that time we have won and settled many cases recovering substantial damages for our publisher clients. In recent times we have turned our attention to the IP ranges publishers hold to authenticate their institutional customers; on average these are incorrect in 58% of cases; either by human error or maliciously. Inaccurate IP data can be costly to publishers for a number of reasons:

Unlicensed access – too broad an IP range can facilitate institutions piggy-backing on the licences of others and thus gaining free access.

Inaccurate usage statistics – wrongly entered, duplicated or over-lapping IP ranges can cause accesses and/or downloads to be counted multiple times. Too narrow an IP range can mean institutions have insufficient access and lead to increased turn-aways.

How does the IP Registry help Open Access Publishers?

OA publishers have difficulty in gauging impact of content when they cannot measure usage nor identify consumers.

By linking log files to the IP Registry publishers can understand where access is coming from, better measure impact and target future marketing activity.

How it works

The IP Registry currently holds around 1.5 billion validated IP addresses from over 60,000 content licensing organisations worldwide. Designated administrators at each institution will log additions, edits and updates for validation by PSI and these will be made available to publishers.

Either manually or via our API, publishers will populate their access management systems with the appropriate and validated IP addresses for each customer organisation or consortium.

Publishers can be confident that only the licensed organisations are accessing their content and that their usage stats provide a true reflection of actual access.

What you need to do

Simply register online and we will send you a full proposal and
grant immediate access.

How much does it cost?

Publishers participate in the program
with an annual fee based on size.


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“The University of Cambridge warmly supports the IP Registry initiative and looks forward to the greater efficiencies it will bring, not least in reducing the admin overhead with multiple publishers and in ensuring reliability for our usage statistics data”

James CaudwellUniversity of Cambridge