[0] 0.128.237.203.in-addr.arpa.: domain name does not exist [0] 1.128.237.203.in-addr.arpa.: domain name does not exist [0] 2.128.237.203.in-addr.arpa.: domain name does not exist [0] 3.128.237.203.in-addr.arpa.: domain name does not exist [0] 4.128.237.203.in-addr.arpa.: domain name does not exist [0] 5.128.237.203.in-addr.arpa.: domain name does not exist [0] 6.128.237.203.in-addr.arpa.: domain name does not exist [0] 7.128.237.203.in-addr.arpa.: domain name does not exist [0] 8.128.237.203.in-addr.arpa.: domain name does not exist [0] 9.128.237.203.in-addr.arpa.: domain name does not exist [0] 10.128.237.203.in-addr.arpa.: domain name does not exist [86400] 11.128.237.203.in-addr.arpa. domain name pointer ip128011.dju.ac.kr [86400] 12.128.237.203.in-addr.arpa. domain name pointer ip128012.dju.ac.kr [86400] 13.128.237.203.in-addr.arpa. domain name pointer ip128013.dju.ac.kr [86400] 14.128.237.203.in-addr.arpa. domain name pointer ip128014.dju.ac.kr [86400] 15.128.237.203.in-addr.arpa. domain name pointer ip128015.dju.ac.kr [86400] 16.128.237.203.in-addr.arpa. domain name pointer ip128016.dju.ac.kr [86400] 17.128.237.203.in-addr.arpa. domain name pointer ip128017.dju.ac.kr [86400] 18.128.237.203.in-addr.arpa. domain name pointer ip128018.dju.ac.kr [86400] 19.128.237.203.in-addr.arpa. domain name pointer ip128019.dju.ac.kr [86400] 20.128.237.203.in-addr.arpa. domain name pointer ip128020.dju.ac.kr [86400] 21.128.237.203.in-addr.arpa. domain name pointer ip128021.dju.ac.kr [86400] 22.128.237.203.in-addr.arpa. domain name pointer ip128022.dju.ac.kr ns2.dju.ac.kr [86400] 23.128.237.203.in-addr.arpa. domain name pointer ns3.dju.ac.kr ip128023.dju.ac.kr [86400] 24.128.237.203.in-addr.arpa. domain name pointer ns4.dju.ac.kr ip128024.dju.ac.kr [86400] 25.128.237.203.in-addr.arpa. domain name pointer ip128025.dju.ac.kr [86400] 26.128.237.203.in-addr.arpa. domain name pointer ip128026.dju.ac.kr [86400] 27.128.237.203.in-addr.arpa. domain name pointer ip128027.dju.ac.kr [86400] 28.128.237.203.in-addr.arpa. domain name pointer ip128028.dju.ac.kr [86400] 29.128.237.203.in-addr.arpa. domain name pointer ip128029.dju.ac.kr [86400] 30.128.237.203.in-addr.arpa. domain name pointer ip128030.dju.ac.kr [86400] 31.128.237.203.in-addr.arpa. domain name pointer ip128031.dju.ac.kr [0] 32.128.237.203.in-addr.arpa.: domain name does not exist [86400] 33.128.237.203.in-addr.arpa. domain name pointer ip128033.dju.ac.kr [86400] 34.128.237.203.in-addr.arpa. domain name pointer ip128034.dju.ac.kr [86400] 35.128.237.203.in-addr.arpa. domain name pointer ip128035.dju.ac.kr [86400] 36.128.237.203.in-addr.arpa. domain name pointer ip128036.dju.ac.kr [86400] 37.128.237.203.in-addr.arpa. domain name pointer ip128037.dju.ac.kr [86400] 38.128.237.203.in-addr.arpa. domain name pointer ip128038.dju.ac.kr [86400] 39.128.237.203.in-addr.arpa. domain name pointer ip128039.dju.ac.kr [86400] 40.128.237.203.in-addr.arpa. domain name pointer ns.dju.ac.kr ip128040.dju.ac.kr [86400] 41.128.237.203.in-addr.arpa. domain name pointer ip128041.dju.ac.kr [86400] 42.128.237.203.in-addr.arpa. domain name pointer ip128042.dju.ac.kr pine.dju.ac.kr [86400] 43.128.237.203.in-addr.arpa. domain name pointer ip128043.dju.ac.kr [86400] 44.128.237.203.in-addr.arpa. domain name pointer ip128044.dju.ac.kr [86400] 45.128.237.203.in-addr.arpa. domain name pointer ip128045.dju.ac.kr [86400] 46.128.237.203.in-addr.arpa. domain name pointer ip128046.dju.ac.kr dju.ac.kr [86400] 47.128.237.203.in-addr.arpa. domain name pointer ip128047.dju.ac.kr [86400] 48.128.237.203.in-addr.arpa. domain name pointer ip128048.dju.ac.kr [86400] 49.128.237.203.in-addr.arpa. domain name pointer ip128049.dju.ac.kr [86400] 50.128.237.203.in-addr.arpa. domain name pointer ip128050.dju.ac.kr [86400] 51.128.237.203.in-addr.arpa. domain name pointer ip128051.dju.ac.kr [86400] 52.128.237.203.in-addr.arpa. domain name pointer ws1000.dju.ac.kr ip128052.dju.ac.kr [86400] 53.128.237.203.in-addr.arpa. domain name pointer ip128053.dju.ac.kr [86400] 54.128.237.203.in-addr.arpa. domain name pointer spam.dju.ac.kr ip128054.dju.ac.kr [86400] 55.128.237.203.in-addr.arpa. domain name pointer ip128055.dju.ac.kr [86400] 56.128.237.203.in-addr.arpa. domain name pointer ip128056.dju.ac.kr [86400] 57.128.237.203.in-addr.arpa. domain name pointer ip128057.dju.ac.kr [86400] 58.128.237.203.in-addr.arpa. domain name pointer ip128058.dju.ac.kr [86400] 59.128.237.203.in-addr.arpa. domain name pointer ip128059.dju.ac.kr [86400] 60.128.237.203.in-addr.arpa. domain name pointer ip128060.dju.ac.kr [86400] 61.128.237.203.in-addr.arpa. domain name pointer ip128061.dju.ac.kr [86400] 62.128.237.203.in-addr.arpa. domain name pointer ip128062.dju.ac.kr [86400] 63.128.237.203.in-addr.arpa. domain name pointer ip128063.dju.ac.kr [86400] 64.128.237.203.in-addr.arpa. domain name pointer ip128064.dju.ac.kr [86400] 65.128.237.203.in-addr.arpa. domain name pointer ip128065.dju.ac.kr [86400] 66.128.237.203.in-addr.arpa. domain name pointer ip128066.dju.ac.kr [86400] 67.128.237.203.in-addr.arpa. domain name pointer ip128067.dju.ac.kr [86400] 68.128.237.203.in-addr.arpa. domain name pointer ip128068.dju.ac.kr [86400] 69.128.237.203.in-addr.arpa. domain name pointer ip128069.dju.ac.kr [86400] 70.128.237.203.in-addr.arpa. domain name pointer ip128070.dju.ac.kr [86400] 71.128.237.203.in-addr.arpa. domain name pointer ip128071.dju.ac.kr [86400] 72.128.237.203.in-addr.arpa. domain name pointer ip128072.dju.ac.kr [86400] 73.128.237.203.in-addr.arpa. domain name pointer ip128073.dju.ac.kr [86400] 74.128.237.203.in-addr.arpa. domain name pointer ip128074.dju.ac.kr [86400] 75.128.237.203.in-addr.arpa. domain name pointer ip128075.dju.ac.kr [86400] 76.128.237.203.in-addr.arpa. domain name pointer ip128076.dju.ac.kr [86400] 77.128.237.203.in-addr.arpa. domain name pointer ip128077.dju.ac.kr [86400] 78.128.237.203.in-addr.arpa. domain name pointer ip128078.dju.ac.kr [86400] 79.128.237.203.in-addr.arpa. domain name pointer ip128079.dju.ac.kr [86400] 80.128.237.203.in-addr.arpa. domain name pointer ip128080.dju.ac.kr [86400] 81.128.237.203.in-addr.arpa. domain name pointer ip128081.dju.ac.kr [86400] 82.128.237.203.in-addr.arpa. domain name pointer ip128082.dju.ac.kr [86400] 83.128.237.203.in-addr.arpa. domain name pointer ip128083.dju.ac.kr [86400] 84.128.237.203.in-addr.arpa. domain name pointer ip128084.dju.ac.kr [86400] 85.128.237.203.in-addr.arpa. domain name pointer ip128085.dju.ac.kr [86400] 86.128.237.203.in-addr.arpa. domain name pointer ip128086.dju.ac.kr [86400] 87.128.237.203.in-addr.arpa. domain name pointer ip128087.dju.ac.kr [86400] 88.128.237.203.in-addr.arpa. domain name pointer ip128088.dju.ac.kr [86400] 89.128.237.203.in-addr.arpa. domain name pointer ip128089.dju.ac.kr [86400] 90.128.237.203.in-addr.arpa. domain name pointer ip128090.dju.ac.kr [86400] 91.128.237.203.in-addr.arpa. domain name pointer ip128091.dju.ac.kr [86400] 92.128.237.203.in-addr.arpa. domain name pointer ip128092.dju.ac.kr [86400] 93.128.237.203.in-addr.arpa. domain name pointer ip128093.dju.ac.kr [86400] 94.128.237.203.in-addr.arpa. domain name pointer ip128094.dju.ac.kr [86400] 95.128.237.203.in-addr.arpa. domain name pointer ip128095.dju.ac.kr [86400] 96.128.237.203.in-addr.arpa. domain name pointer ip128096.dju.ac.kr [86400] 97.128.237.203.in-addr.arpa. domain name pointer ip128097.dju.ac.kr [86400] 98.128.237.203.in-addr.arpa. domain name pointer ip128098.dju.ac.kr [86400] 99.128.237.203.in-addr.arpa. domain name pointer ip128099.dju.ac.kr [86400] 100.128.237.203.in-addr.arpa. domain name pointer ip128100.dju.ac.kr [86400] 101.128.237.203.in-addr.arpa. domain name pointer ip128101.dju.ac.kr [86400] 102.128.237.203.in-addr.arpa. domain name pointer ip128102.dju.ac.kr [86400] 103.128.237.203.in-addr.arpa. domain name pointer ip128103.dju.ac.kr [86400] 104.128.237.203.in-addr.arpa. domain name pointer ip128104.dju.ac.kr [86400] 105.128.237.203.in-addr.arpa. domain name pointer ip128105.dju.ac.kr [86400] 106.128.237.203.in-addr.arpa. domain name pointer ip128106.dju.ac.kr [86400] 107.128.237.203.in-addr.arpa. domain name pointer ip128107.dju.ac.kr [86400] 108.128.237.203.in-addr.arpa. domain name pointer ip128108.dju.ac.kr [86400] 109.128.237.203.in-addr.arpa. domain name pointer ip128109.dju.ac.kr [86400] 110.128.237.203.in-addr.arpa. domain name pointer ip128110.dju.ac.kr [86400] 111.128.237.203.in-addr.arpa. domain name pointer ip128111.dju.ac.kr [86400] 112.128.237.203.in-addr.arpa. domain name pointer ip128112.dju.ac.kr [86400] 113.128.237.203.in-addr.arpa. domain name pointer ip128113.dju.ac.kr [86400] 114.128.237.203.in-addr.arpa. domain name pointer ip128114.dju.ac.kr [86400] 115.128.237.203.in-addr.arpa. domain name pointer ip128115.dju.ac.kr [86400] 116.128.237.203.in-addr.arpa. domain name pointer ip128116.dju.ac.kr [86400] 117.128.237.203.in-addr.arpa. domain name pointer ip128117.dju.ac.kr [86400] 118.128.237.203.in-addr.arpa. domain name pointer ip128118.dju.ac.kr [86400] 119.128.237.203.in-addr.arpa. domain name pointer ip128119.dju.ac.kr [86400] 120.128.237.203.in-addr.arpa. domain name pointer ip128120.dju.ac.kr [86400] 121.128.237.203.in-addr.arpa. domain name pointer ip128121.dju.ac.kr [86400] 122.128.237.203.in-addr.arpa. domain name pointer ip128122.dju.ac.kr [86400] 123.128.237.203.in-addr.arpa. domain name pointer ip128123.dju.ac.kr [86400] 124.128.237.203.in-addr.arpa. domain name pointer ip128124.dju.ac.kr [86400] 125.128.237.203.in-addr.arpa. domain name pointer ip128125.dju.ac.kr [86400] 126.128.237.203.in-addr.arpa. domain name pointer ip128126.dju.ac.kr [86400] 127.128.237.203.in-addr.arpa. domain name pointer ip128127.dju.ac.kr [86400] 128.128.237.203.in-addr.arpa. domain name pointer ip128128.dju.ac.kr [86400] 129.128.237.203.in-addr.arpa. domain name pointer ip128129.dju.ac.kr [86400] 130.128.237.203.in-addr.arpa. domain name pointer ip128130.dju.ac.kr [86400] 131.128.237.203.in-addr.arpa. domain name pointer ip128131.dju.ac.kr [86400] 132.128.237.203.in-addr.arpa. domain name pointer ip128132.dju.ac.kr [86400] 133.128.237.203.in-addr.arpa. domain name pointer ip128133.dju.ac.kr [86400] 134.128.237.203.in-addr.arpa. domain name pointer ip128134.dju.ac.kr [86400] 135.128.237.203.in-addr.arpa. domain name pointer ip128135.dju.ac.kr [86400] 136.128.237.203.in-addr.arpa. domain name pointer ip128136.dju.ac.kr [86400] 137.128.237.203.in-addr.arpa. domain name pointer ip128137.dju.ac.kr [86400] 138.128.237.203.in-addr.arpa. domain name pointer ip128138.dju.ac.kr [86400] 139.128.237.203.in-addr.arpa. domain name pointer ip128139.dju.ac.kr [86400] 140.128.237.203.in-addr.arpa. domain name pointer ip128140.dju.ac.kr [86400] 141.128.237.203.in-addr.arpa. domain name pointer ip128141.dju.ac.kr [86400] 142.128.237.203.in-addr.arpa. domain name pointer ip128142.dju.ac.kr [86400] 143.128.237.203.in-addr.arpa. domain name pointer ip128143.dju.ac.kr [86400] 144.128.237.203.in-addr.arpa. domain name pointer ip128144.dju.ac.kr [86400] 145.128.237.203.in-addr.arpa. domain name pointer ip128145.dju.ac.kr [86400] 146.128.237.203.in-addr.arpa. domain name pointer ip128146.dju.ac.kr [86400] 147.128.237.203.in-addr.arpa. domain name pointer ip128147.dju.ac.kr [86400] 148.128.237.203.in-addr.arpa. domain name pointer ip128148.dju.ac.kr [86400] 149.128.237.203.in-addr.arpa. domain name pointer ip128149.dju.ac.kr [86400] 150.128.237.203.in-addr.arpa. domain name pointer ip128150.dju.ac.kr [86400] 151.128.237.203.in-addr.arpa. domain name pointer ip128151.dju.ac.kr [86400] 152.128.237.203.in-addr.arpa. domain name pointer ip128152.dju.ac.kr [86400] 153.128.237.203.in-addr.arpa. domain name pointer ip128153.dju.ac.kr [86400] 154.128.237.203.in-addr.arpa. domain name pointer ip128154.dju.ac.kr [86400] 155.128.237.203.in-addr.arpa. domain name pointer ip128155.dju.ac.kr [86400] 156.128.237.203.in-addr.arpa. domain name pointer ip128156.dju.ac.kr [86400] 157.128.237.203.in-addr.arpa. domain name pointer ip128157.dju.ac.kr [86400] 158.128.237.203.in-addr.arpa. domain name pointer ip128158.dju.ac.kr [86400] 159.128.237.203.in-addr.arpa. domain name pointer ip128159.dju.ac.kr [86400] 160.128.237.203.in-addr.arpa. domain name pointer ip128160.dju.ac.kr [86400] 161.128.237.203.in-addr.arpa. domain name pointer ip128161.dju.ac.kr [86400] 162.128.237.203.in-addr.arpa. domain name pointer ip128162.dju.ac.kr [86400] 163.128.237.203.in-addr.arpa. domain name pointer ip128163.dju.ac.kr [86400] 164.128.237.203.in-addr.arpa. domain name pointer ip128164.dju.ac.kr [86400] 165.128.237.203.in-addr.arpa. domain name pointer ip128165.dju.ac.kr [86400] 166.128.237.203.in-addr.arpa. domain name pointer ip128166.dju.ac.kr [86400] 167.128.237.203.in-addr.arpa. domain name pointer ip128167.dju.ac.kr [86400] 168.128.237.203.in-addr.arpa. domain name pointer ip128168.dju.ac.kr [86400] 169.128.237.203.in-addr.arpa. domain name pointer ip128169.dju.ac.kr [86400] 170.128.237.203.in-addr.arpa. domain name pointer ip128170.dju.ac.kr [86400] 171.128.237.203.in-addr.arpa. domain name pointer ip128171.dju.ac.kr [86400] 172.128.237.203.in-addr.arpa. domain name pointer ip128172.dju.ac.kr [86400] 173.128.237.203.in-addr.arpa. domain name pointer ip128173.dju.ac.kr [86400] 174.128.237.203.in-addr.arpa. domain name pointer ip128174.dju.ac.kr [86400] 175.128.237.203.in-addr.arpa. domain name pointer ip128175.dju.ac.kr [86400] 176.128.237.203.in-addr.arpa. domain name pointer ip128176.dju.ac.kr [86400] 177.128.237.203.in-addr.arpa. domain name pointer ip128177.dju.ac.kr [86400] 178.128.237.203.in-addr.arpa. domain name pointer ip128178.dju.ac.kr [86400] 179.128.237.203.in-addr.arpa. domain name pointer ip128179.dju.ac.kr [86400] 180.128.237.203.in-addr.arpa. domain name pointer ip128180.dju.ac.kr [86400] 181.128.237.203.in-addr.arpa. domain name pointer ip128181.dju.ac.kr [86400] 182.128.237.203.in-addr.arpa. domain name pointer ip128182.dju.ac.kr [86400] 183.128.237.203.in-addr.arpa. domain name pointer ip128183.dju.ac.kr [86400] 184.128.237.203.in-addr.arpa. domain name pointer ip128184.dju.ac.kr [86400] 185.128.237.203.in-addr.arpa. domain name pointer ip128185.dju.ac.kr [86400] 186.128.237.203.in-addr.arpa. domain name pointer ip128186.dju.ac.kr [86400] 187.128.237.203.in-addr.arpa. domain name pointer ip128187.dju.ac.kr [86400] 188.128.237.203.in-addr.arpa. domain name pointer ip128188.dju.ac.kr [86400] 189.128.237.203.in-addr.arpa. domain name pointer ip128189.dju.ac.kr [86400] 190.128.237.203.in-addr.arpa. domain name pointer ip128190.dju.ac.kr [86400] 191.128.237.203.in-addr.arpa. domain name pointer ip128191.dju.ac.kr [86400] 192.128.237.203.in-addr.arpa. domain name pointer ip128192.dju.ac.kr [86400] 193.128.237.203.in-addr.arpa. domain name pointer ip128193.dju.ac.kr [86400] 194.128.237.203.in-addr.arpa. domain name pointer ip128194.dju.ac.kr [86400] 195.128.237.203.in-addr.arpa. domain name pointer ip128195.dju.ac.kr [86400] 196.128.237.203.in-addr.arpa. domain name pointer ip128196.dju.ac.kr [86400] 197.128.237.203.in-addr.arpa. domain name pointer ip128197.dju.ac.kr [86400] 198.128.237.203.in-addr.arpa. domain name pointer ip128198.dju.ac.kr [86400] 199.128.237.203.in-addr.arpa. domain name pointer ip128199.dju.ac.kr [86400] 200.128.237.203.in-addr.arpa. domain name pointer ip128200.dju.ac.kr [86400] 201.128.237.203.in-addr.arpa. domain name pointer ip128201.dju.ac.kr [86400] 202.128.237.203.in-addr.arpa. domain name pointer ip128202.dju.ac.kr [86400] 203.128.237.203.in-addr.arpa. domain name pointer ip128203.dju.ac.kr [86400] 204.128.237.203.in-addr.arpa. domain name pointer ip128204.dju.ac.kr [86400] 205.128.237.203.in-addr.arpa. domain name pointer ip128205.dju.ac.kr [86400] 206.128.237.203.in-addr.arpa. domain name pointer ip128206.dju.ac.kr [86400] 207.128.237.203.in-addr.arpa. domain name pointer ip128207.dju.ac.kr [86400] 208.128.237.203.in-addr.arpa. domain name pointer ip128208.dju.ac.kr [86400] 209.128.237.203.in-addr.arpa. domain name pointer ip128209.dju.ac.kr [86400] 210.128.237.203.in-addr.arpa. domain name pointer ip128210.dju.ac.kr [86400] 211.128.237.203.in-addr.arpa. domain name pointer ip128211.dju.ac.kr [86400] 212.128.237.203.in-addr.arpa. domain name pointer ip128212.dju.ac.kr [86400] 213.128.237.203.in-addr.arpa. domain name pointer ip128213.dju.ac.kr [86400] 214.128.237.203.in-addr.arpa. domain name pointer ip128214.dju.ac.kr [86400] 215.128.237.203.in-addr.arpa. domain name pointer ip128215.dju.ac.kr [86400] 216.128.237.203.in-addr.arpa. domain name pointer ip128216.dju.ac.kr [86400] 217.128.237.203.in-addr.arpa. domain name pointer ip128217.dju.ac.kr [86400] 218.128.237.203.in-addr.arpa. domain name pointer ip128218.dju.ac.kr [86400] 219.128.237.203.in-addr.arpa. domain name pointer ip128219.dju.ac.kr [86400] 220.128.237.203.in-addr.arpa. domain name pointer ip128220.dju.ac.kr [86400] 221.128.237.203.in-addr.arpa. domain name pointer ip128221.dju.ac.kr [86400] 222.128.237.203.in-addr.arpa. domain name pointer ip128222.dju.ac.kr [86400] 223.128.237.203.in-addr.arpa. domain name pointer ip128223.dju.ac.kr [86400] 224.128.237.203.in-addr.arpa. domain name pointer ip128224.dju.ac.kr [86400] 225.128.237.203.in-addr.arpa. domain name pointer ip128225.dju.ac.kr [86400] 226.128.237.203.in-addr.arpa. domain name pointer ip128226.dju.ac.kr [86400] 227.128.237.203.in-addr.arpa. domain name pointer ip128227.dju.ac.kr [86400] 228.128.237.203.in-addr.arpa. domain name pointer ip128228.dju.ac.kr [86400] 229.128.237.203.in-addr.arpa. domain name pointer ip128229.dju.ac.kr [86400] 230.128.237.203.in-addr.arpa. domain name pointer ip128230.dju.ac.kr [86400] 231.128.237.203.in-addr.arpa. domain name pointer ip128231.dju.ac.kr [86400] 232.128.237.203.in-addr.arpa. domain name pointer ip128232.dju.ac.kr [86400] 233.128.237.203.in-addr.arpa. domain name pointer ip128233.dju.ac.kr [86400] 234.128.237.203.in-addr.arpa. domain name pointer ip128234.dju.ac.kr [86400] 235.128.237.203.in-addr.arpa. domain name pointer ip128235.dju.ac.kr [86400] 236.128.237.203.in-addr.arpa. domain name pointer ip128236.dju.ac.kr [86400] 237.128.237.203.in-addr.arpa. domain name pointer ip128237.dju.ac.kr [86400] 238.128.237.203.in-addr.arpa. domain name pointer ip128238.dju.ac.kr [86400] 239.128.237.203.in-addr.arpa. domain name pointer ip128239.dju.ac.kr [86400] 240.128.237.203.in-addr.arpa. domain name pointer ip128240.dju.ac.kr [86400] 241.128.237.203.in-addr.arpa. domain name pointer ip128241.dju.ac.kr [86400] 242.128.237.203.in-addr.arpa. domain name pointer ip128242.dju.ac.kr [86400] 243.128.237.203.in-addr.arpa. domain name pointer ip128243.dju.ac.kr [86400] 244.128.237.203.in-addr.arpa. domain name pointer ip128244.dju.ac.kr [86400] 245.128.237.203.in-addr.arpa. domain name pointer ip128245.dju.ac.kr [86400] 246.128.237.203.in-addr.arpa. domain name pointer ip128246.dju.ac.kr [86400] 247.128.237.203.in-addr.arpa. domain name pointer ip128247.dju.ac.kr [86400] 248.128.237.203.in-addr.arpa. domain name pointer ip128248.dju.ac.kr [86400] 249.128.237.203.in-addr.arpa. domain name pointer ip128249.dju.ac.kr [86400] 250.128.237.203.in-addr.arpa. domain name pointer ip128250.dju.ac.kr [86400] 251.128.237.203.in-addr.arpa. domain name pointer ip128251.dju.ac.kr [86400] 252.128.237.203.in-addr.arpa. domain name pointer ip128252.dju.ac.kr [86400] 253.128.237.203.in-addr.arpa. domain name pointer ip128253.dju.ac.kr [86400] 254.128.237.203.in-addr.arpa. domain name pointer ip128254.dju.ac.kr [0] 255.128.237.203.in-addr.arpa.: domain name does not exist