#upn

What does "upn" mean?
utterpradesh_parivahan_nigam, UnPeuNarcissique, UnitedPatientsNetwork, us_pagli_Ne, UltimoPedestrianNetwork, UniónPeruanadelNorte, UpečteProNěkoho, UntilParisxNYFW, UniversidadPedagógicaNacional

upn-m 38959 upn-orth 551659 upn-ext 130274 upn-ow 12203 upn-ess 18537 upn-vj 5439 upn-fm 4667 upn-down 8442 upn-yk 2866 upn-out 7545 upn-ormal 10849 upn-olook 5935 upn-vyk 3594 upn-coming 9038 upn-orthmichigan 10075 upn-orthlife 5225 upn-orthliving 3823 upn-hitz 1530 upn-veteran 1688 upn-jogja 1500 upn-oolhar 1282 upn-orthnaturals 1624 upn-orthgraff 713 upn-stoned 644 upn-oopenquemmeviumentiu 755 upn-outstudio 541 upn-extrd2 447 upn-uhman 432 upn-oalavantu 478 upn-2014 325 upn-dout 306 upn-orth2012 442 upn-comingwhipz 336 upn-2013 269 upn-upcrazy 362 upn-orth2015 366 upn-cumnartists 252 upn-igga 239 upn-orthhood 322 upn-datit 277 upn-jatim 261 upn-photoaday 290 upn-exttraining 233 upn-goofficial 263 upn-orthgraffiti 298 upn-smoke 245 upn-ctm 159 upn-extent 249 upn-ormaltasik 251 upn-orth2013 209 upn-orh 123 upn-orthvacation 210 upn-orthlovin 223