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- JANET_NRS abstract "The JANET NRS (Name Registration Scheme) was a pseudo-hierarchical naming scheme used on British academic and research networks until the superficially similar system used by the Internet DNS was fully established.A principal difference was that the order of significance began with the most significant part (so called Big-endian addresses). Also, NRS names were canonically written in upper case. For example, the University of Cambridge had the NRS name UK.AC.CAM, whereas its DNS domain is cam.ac.uk. All NRS 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.Another significant difference from the DNS was the concept of context to name lookups, e.g. 'mail' or 'file transfer'. This made the NRS more sophisticated than the DNS, permitting overloading of names.The NRS \"second-level domains\" consisted of UK.AC (JANET academic and scientific sites), UK.CO (commercial) and UK.MOD (Ministry of Defence). Any organisations not falling into these categories were given their own \"second-level\" name, e.g. UK.BL (British Library) or UK.NEL (National Engineering Laboratory).For email, interoperability between the \"Grey Book\" email addressing style of user@UK.AC.SITE and Internet addresses of the style user@site.ac.uk was achieved by way of mail gateways. However, problems were caused when the least significant part of an Internet address matched the most significant part of an NRS address and vice versa. (The classic joke was that e-mail intended for UK universities ended up in Czechoslovakia, since many JANET e-mail addresses were of the form user@UK.AC.universityname.CS, where \"CS\" stood for Computer Science (department), but \".cs\" was also the two-letter country code for Czechoslovakia until 1995.)JANET transitioned to using Internet protocols in the early 1990s, and the final mail gateway had been taken out of service by the end of 1997. Its one remaining legacy is the convention of using .uk for British DNS domains, rather than .gb, as specified by ISO 3166.".
- JANET_NRS wikiPageExternalLink Reid-History.pdf.
- JANET_NRS wikiPageID "999964".
- JANET_NRS wikiPageLength "2748".
- JANET_NRS wikiPageOutDegree "14".
- JANET_NRS wikiPageRevisionID "670191687".
- JANET_NRS wikiPageWikiLink .cs.
- JANET_NRS wikiPageWikiLink .gb.
- JANET_NRS wikiPageWikiLink .uk.
- JANET_NRS wikiPageWikiLink British_Library.
- JANET_NRS wikiPageWikiLink Category:Wide_area_networks.
- JANET_NRS wikiPageWikiLink Coloured_Book_protocols.
- JANET_NRS wikiPageWikiLink Domain_Name_System.
- JANET_NRS wikiPageWikiLink Endianness.
- JANET_NRS wikiPageWikiLink ISO_3166.
- JANET_NRS wikiPageWikiLink JANET.
- JANET_NRS wikiPageWikiLink Ministry_of_Defence_(United_Kingdom).
- JANET_NRS wikiPageWikiLink United_Kingdom.
- JANET_NRS wikiPageWikiLink University_of_Cambridge.
- JANET_NRS wikiPageWikiLinkText "JANET NRS".
- JANET_NRS wikiPageWikiLinkText "JANET".
- JANET_NRS wikiPageWikiLinkText "Name Registration Scheme".
- JANET_NRS wikiPageUsesTemplate Template:Cite_conference.
- JANET_NRS subject Category:Wide_area_networks.
- JANET_NRS hypernym Scheme.
- JANET_NRS type Organisation.
- JANET_NRS type Network.
- JANET_NRS comment "The JANET NRS (Name Registration Scheme) was a pseudo-hierarchical naming scheme used on British academic and research networks until the superficially similar system used by the Internet DNS was fully established.A principal difference was that the order of significance began with the most significant part (so called Big-endian addresses). Also, NRS names were canonically written in upper case.".
- JANET_NRS label "JANET NRS".
- JANET_NRS sameAs Q6107680.
- JANET_NRS sameAs m.03y32f.
- JANET_NRS sameAs Q6107680.
- JANET_NRS wasDerivedFrom JANET_NRS?oldid=670191687.
- JANET_NRS isPrimaryTopicOf JANET_NRS.