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Name Registration Scheme

Overview#

Name Registration Scheme (NRS or JANET NRS) was a pseudo-hierarchical naming scheme used on British academic and research networks until the superficially similar system used by the Internet Domain Name System (DNS) was fully established.

A principal difference was that the order of significance began with the most significant part (so called Big-Endian addresses).

Name Registration Scheme names were canonically written in UPPERCASE. For example, the University of Cambridge had the NRS name UK.AC.CAM, whereas its DNS Domain is cam.ac.uk.

Name Registration Scheme names had both a standard (long) and abbreviated (up to 18 characters) form. For example, UK.AC.CAMBRIDGE was the less widely used standard equivalent of the abbreviated name UK.AC.CAM.

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