https://w3id.org/uri4uri/urn/
urnns
urn:3gpp:
urn:3gpp2:
urn:adid:
urn:alert:
urn:bbf:
urn:broadband-forum-org:
urn:cablelabs:
urn:ccsds:
urn:cdx:
urn:cgi:
urn:clei:
urn:cta:
urn:ddi:
urn:dev:
urn:dgiwg:
urn:doi:
urn:dslforum-org:
urn:dvb:
urn:ebu:
urn:eic:
urn:eidr:
urn:epc:
urn:epcglobal:
urn:etsi:
urn:eurosystem:
urn:example:
urn:fdc:
urn:fipa:
urn:gdst:
urn:geant:
urn:globus:
urn:gsma:
urn:gvat:
urn:hbbtv:
urn:ieee:
urn:ietf:
urn:iptc:
urn:isan:
urn:isbn:
urn:iso:
urn:issn:
urn:itu:
urn:ivis:
urn:knx:
urn:lei:
urn:lex:
urn:liberty:
urn:mace:
urn:mef:
urn:meta:
urn:mpeg:
urn:mrn:
urn:nan:
urn:nato:
urn:nbn:
urn:nena:
urn:newsml:
urn:nfc:
urn:nzl:
urn:oasis:
urn:ogc:
urn:ogf:
urn:oid:
urn:oipf:
urn:oma:
urn:onem2m:
urn:onf:
urn:pin:
urn:publicid:
urn:pwid:
urn:reso:
urn:s1000d:
urn:schac:
urn:service:
urn:smpte:
urn:swift:
urn:tva:
urn:uci:
urn:ucode:
urn:uic:
urn:urn-1:
urn:urn-2:
urn:urn-3:
urn:urn-4:
urn:urn-5:
urn:urn-6:
urn:urn-7:
urn:uuid:
urn:web3d:
urn:xmlorg:
urn:xmpp:
urn