2014-07-15

Request to Review and Update your IP Ranges

Dear Official and Designated Representatives,

The most frequent user support request that ICPSR receives is "I downloaded the study, but there wasn't any data" and that problem is almost always the result of ICPSR lacking up-to-date IP ranges for the member institution. It's frustrating for end users and likely generates unneeded user support requests for you as ICPSR ORs/DRs.

ICPSR asks that each institution take some time this summer to supply us with up-to-date IP ranges for your institution.

Here are some suggestions on how to handle this:

How do I obtain my university's IP ranges?

Just email your central IT department. In all likelihood, they will email you the ranges, or email you a URL where those ranges are made available to vendors. Just forward the email on to ICPSR at netmail@icpsr.umich.edu and we'll handle the rest. Your library may also have these IP ranges, as they need them for working with journal subscriptions and other online services.

How can I view the IP addresses ICPSR currently has on file?

If you go to the front page of the Membership in ICPSR website, there's a link on the left titled "View IP Ranges" underneath "Manage Your Membership." Note that the link requires you to login as an OR or DR.

That said, ICPSR would prefer you just send us the IP ranges. We will delete the old ranges and input the latest numbers, double-checking for errors when the ranges are converted to CIDR, and our system will record when we last updated your IP ranges, so that we can have a record of how up-to-date the information is.

Why do the IP ranges look so odd?

This is part of why we prefer you send us updated IP ranges rather than evaluating whether an update is needed.

Our system expresses IP ranges using CIDR - a format rapidly being adopted by IT organizations and universities. To convert CIDR to traditional IP ranges (or vice versa), please use this CIDR-IP Converter.

Even for users familiar with IP addresses, CIDR is a bit confusing. Unfortunately, we're rapidly running out of IPv4 addresses, and CIDR is one of the ways IT departments are handling this shortage.

Where do I send the IP addresses?

Either netmail@icpsr.umich.edu or web-support@icpsr.umich.edu would be fine.

I can't access one of the links above because I forgot my password. What do I do?

Email netmail@icpsr.umich.edu. Be sure to include your name and institution and request that your password be sent to you.

Need to see what email address we have associated with your OR/DR account? Find and click on your institution on our member list and you will see the email we have associated with your account.