[0] 0.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 1.99.189.137.in-addr.arpa. domain name pointer ieuga.ie.cuhk.edu.hk
[43200] 2.99.189.137.in-addr.arpa. domain name pointer e450.ie.cuhk.edu.hk
[43200] 3.99.189.137.in-addr.arpa. domain name pointer iesun3.ie.cuhk.edu.hk
[43200] 4.99.189.137.in-addr.arpa. domain name pointer iesun4.ie.cuhk.edu.hk
[43200] 5.99.189.137.in-addr.arpa. domain name pointer iesun5.ie.cuhk.edu.hk
[43200] 6.99.189.137.in-addr.arpa. domain name pointer iesun6.ie.cuhk.edu.hk
[43200] 7.99.189.137.in-addr.arpa. domain name pointer iesun7.ie.cuhk.edu.hk
[43200] 8.99.189.137.in-addr.arpa. domain name pointer iesun8.ie.cuhk.edu.hk
[43200] 9.99.189.137.in-addr.arpa. domain name pointer iesun9.ie.cuhk.edu.hk
[43200] 10.99.189.137.in-addr.arpa. domain name pointer iesun10.ie.cuhk.edu.hk
[43200] 11.99.189.137.in-addr.arpa. domain name pointer iesun11.ie.cuhk.edu.hk
[43200] 12.99.189.137.in-addr.arpa. domain name pointer iesun12.ie.cuhk.edu.hk
[43200] 13.99.189.137.in-addr.arpa. domain name pointer iesun13.ie.cuhk.edu.hk
[43200] 14.99.189.137.in-addr.arpa. domain name pointer iesun14.ie.cuhk.edu.hk
[43200] 15.99.189.137.in-addr.arpa. domain name pointer iesun15.ie.cuhk.edu.hk
[43200] 16.99.189.137.in-addr.arpa. domain name pointer iesun16.ie.cuhk.edu.hk
[43200] 17.99.189.137.in-addr.arpa. domain name pointer iesun17.ie.cuhk.edu.hk
[43200] 18.99.189.137.in-addr.arpa. domain name pointer iesun18.ie.cuhk.edu.hk
[43200] 19.99.189.137.in-addr.arpa. domain name pointer iesun19.ie.cuhk.edu.hk
[43200] 20.99.189.137.in-addr.arpa. domain name pointer iesun20.ie.cuhk.edu.hk
[43200] 21.99.189.137.in-addr.arpa. domain name pointer iesun21.ie.cuhk.edu.hk
[43200] 22.99.189.137.in-addr.arpa. domain name pointer iesun22.ie.cuhk.edu.hk
[43200] 23.99.189.137.in-addr.arpa. domain name pointer iesun23.ie.cuhk.edu.hk
[43200] 24.99.189.137.in-addr.arpa. domain name pointer iesun24.ie.cuhk.edu.hk
[43200] 25.99.189.137.in-addr.arpa. domain name pointer iesun25.ie.cuhk.edu.hk
[43200] 26.99.189.137.in-addr.arpa. domain name pointer iesun26.ie.cuhk.edu.hk
[43200] 27.99.189.137.in-addr.arpa. domain name pointer iesun27.ie.cuhk.edu.hk
[43200] 28.99.189.137.in-addr.arpa. domain name pointer iesun28.ie.cuhk.edu.hk
[43200] 29.99.189.137.in-addr.arpa. domain name pointer iesun29.ie.cuhk.edu.hk
[43200] 30.99.189.137.in-addr.arpa. domain name pointer iesun30.ie.cuhk.edu.hk
[43200] 31.99.189.137.in-addr.arpa. domain name pointer iesun31.ie.cuhk.edu.hk
[43200] 32.99.189.137.in-addr.arpa. domain name pointer iesun32.ie.cuhk.edu.hk
[43200] 33.99.189.137.in-addr.arpa. domain name pointer iesun33.ie.cuhk.edu.hk
[43200] 34.99.189.137.in-addr.arpa. domain name pointer iesun34.ie.cuhk.edu.hk
[43200] 35.99.189.137.in-addr.arpa. domain name pointer iesun35.ie.cuhk.edu.hk
[43200] 36.99.189.137.in-addr.arpa. domain name pointer iesun36.ie.cuhk.edu.hk
[43200] 37.99.189.137.in-addr.arpa. domain name pointer iesun37.ie.cuhk.edu.hk
[43200] 38.99.189.137.in-addr.arpa. domain name pointer iesun38.ie.cuhk.edu.hk
[43200] 39.99.189.137.in-addr.arpa. domain name pointer iesun39.ie.cuhk.edu.hk
[43200] 40.99.189.137.in-addr.arpa. domain name pointer iesun40.ie.cuhk.edu.hk
[43200] 41.99.189.137.in-addr.arpa. domain name pointer iesun41.ie.cuhk.edu.hk
[43200] 42.99.189.137.in-addr.arpa. domain name pointer iesun42.ie.cuhk.edu.hk
[43200] 43.99.189.137.in-addr.arpa. domain name pointer iesun43.ie.cuhk.edu.hk
[43200] 44.99.189.137.in-addr.arpa. domain name pointer iesun44.ie.cuhk.edu.hk
[43200] 45.99.189.137.in-addr.arpa. domain name pointer iesun45.ie.cuhk.edu.hk
[43200] 46.99.189.137.in-addr.arpa. domain name pointer iesun46.ie.cuhk.edu.hk
[43200] 47.99.189.137.in-addr.arpa. domain name pointer iesun47.ie.cuhk.edu.hk
[43200] 48.99.189.137.in-addr.arpa. domain name pointer iesun48.ie.cuhk.edu.hk
[43200] 49.99.189.137.in-addr.arpa. domain name pointer iesun49.ie.cuhk.edu.hk
[43200] 50.99.189.137.in-addr.arpa. domain name pointer iesun50.ie.cuhk.edu.hk
[43200] 51.99.189.137.in-addr.arpa. domain name pointer iesun51.ie.cuhk.edu.hk
[43200] 52.99.189.137.in-addr.arpa. domain name pointer iesun52.ie.cuhk.edu.hk
[43200] 53.99.189.137.in-addr.arpa. domain name pointer iesun53.ie.cuhk.edu.hk
[43200] 54.99.189.137.in-addr.arpa. domain name pointer iesun54.ie.cuhk.edu.hk
[43200] 55.99.189.137.in-addr.arpa. domain name pointer iesun55.ie.cuhk.edu.hk
[43200] 56.99.189.137.in-addr.arpa. domain name pointer iesun56.ie.cuhk.edu.hk
[43200] 57.99.189.137.in-addr.arpa. domain name pointer iesun57.ie.cuhk.edu.hk
[43200] 58.99.189.137.in-addr.arpa. domain name pointer iesun58.ie.cuhk.edu.hk
[43200] 59.99.189.137.in-addr.arpa. domain name pointer iesun59.ie.cuhk.edu.hk
[0] 60.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 61.99.189.137.in-addr.arpa. domain name pointer mediaw-sw2.ie.cuhk.edu.hk
[43200] 62.99.189.137.in-addr.arpa. domain name pointer iecisco1.ie.cuhk.edu.hk
[43200] 63.99.189.137.in-addr.arpa. domain name pointer fastsw5.ie.cuhk.edu.hk
[43200] 64.99.189.137.in-addr.arpa. domain name pointer fastsw11.ie.cuhk.edu.hk
[43200] 65.99.189.137.in-addr.arpa. domain name pointer ielocker.ie.cuhk.edu.hk
[0] 66.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 67.99.189.137.in-addr.arpa. domain name pointer ielocker2.ie.cuhk.edu.hk
[43200] 68.99.189.137.in-addr.arpa. domain name pointer iealinux.ie.cuhk.edu.hk
[43200] 69.99.189.137.in-addr.arpa. domain name pointer dialup1-01.ie.cuhk.edu.hk
[43200] 70.99.189.137.in-addr.arpa. domain name pointer dialup1-02.ie.cuhk.edu.hk
[0] 71.99.189.137.in-addr.arpa.: domain name does not exist
[0] 72.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 73.99.189.137.in-addr.arpa. domain name pointer iecisco3.ie.cuhk.edu.hk
[43200] 74.99.189.137.in-addr.arpa. domain name pointer ieugab.ie.cuhk.edu.hk
[43200] 75.99.189.137.in-addr.arpa. domain name pointer iest0b.ie.cuhk.edu.hk
[43200] 76.99.189.137.in-addr.arpa. domain name pointer ielinux.ie.cuhk.edu.hk
[43200] 77.99.189.137.in-addr.arpa. domain name pointer macg4.ie.cuhk.edu.hk
[43200] 78.99.189.137.in-addr.arpa. domain name pointer ietest2.ie.cuhk.edu.hk
[43200] 79.99.189.137.in-addr.arpa. domain name pointer ielinux2.ie.cuhk.edu.hk
[43200] 80.99.189.137.in-addr.arpa. domain name pointer iecctv0.ie.cuhk.edu.hk
[43200] 81.99.189.137.in-addr.arpa. domain name pointer iecctv1.ie.cuhk.edu.hk
[43200] 82.99.189.137.in-addr.arpa. domain name pointer iecctv2.ie.cuhk.edu.hk
[43200] 83.99.189.137.in-addr.arpa. domain name pointer iecctv3.ie.cuhk.edu.hk
[43200] 84.99.189.137.in-addr.arpa. domain name pointer domcam1.ie.cuhk.edu.hk
[43200] 85.99.189.137.in-addr.arpa. domain name pointer domcam2.ie.cuhk.edu.hk
[0] 86.99.189.137.in-addr.arpa.: domain name does not exist
[0] 87.99.189.137.in-addr.arpa.: domain name does not exist
[0] 88.99.189.137.in-addr.arpa.: domain name does not exist
[0] 89.99.189.137.in-addr.arpa.: domain name does not exist
[0] 90.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 91.99.189.137.in-addr.arpa. domain name pointer webpc1.ie.cuhk.edu.hk
[43200] 92.99.189.137.in-addr.arpa. domain name pointer webpc2.ie.cuhk.edu.hk
[43200] 93.99.189.137.in-addr.arpa. domain name pointer webpc3.ie.cuhk.edu.hk
[43200] 94.99.189.137.in-addr.arpa. domain name pointer webpc4.ie.cuhk.edu.hk
[43200] 95.99.189.137.in-addr.arpa. domain name pointer webpc5.ie.cuhk.edu.hk
[0] 96.99.189.137.in-addr.arpa.: domain name does not exist
[0] 97.99.189.137.in-addr.arpa.: domain name does not exist
[0] 98.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 99.99.189.137.in-addr.arpa. domain name pointer pp-ts2.ie.cuhk.edu.hk
[43200] 100.99.189.137.in-addr.arpa. domain name pointer iemac.ie.cuhk.edu.hk
[43200] 101.99.189.137.in-addr.arpa. domain name pointer router991-1.ie.cuhk.edu.hk
[43200] 102.99.189.137.in-addr.arpa. domain name pointer router991-2.ie.cuhk.edu.hk
[43200] 103.99.189.137.in-addr.arpa. domain name pointer iesun53.ie.cuhk.edu.hk
[43200] 104.99.189.137.in-addr.arpa. domain name pointer iesun54.ie.cuhk.edu.hk
[43200] 105.99.189.137.in-addr.arpa. domain name pointer iesun55.ie.cuhk.edu.hk
[43200] 106.99.189.137.in-addr.arpa. domain name pointer iesun56.ie.cuhk.edu.hk
[43200] 107.99.189.137.in-addr.arpa. domain name pointer iesun57.ie.cuhk.edu.hk
[43200] 108.99.189.137.in-addr.arpa. domain name pointer rmdemo1.ie.cuhk.edu.hk
[43200] 109.99.189.137.in-addr.arpa. domain name pointer rmdemo2.ie.cuhk.edu.hk
[0] 110.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 111.99.189.137.in-addr.arpa. domain name pointer wms2.ie.cuhk.edu.hk
[43200] 112.99.189.137.in-addr.arpa. domain name pointer ievc.ie.cuhk.edu.hk
[43200] 113.99.189.137.in-addr.arpa. domain name pointer ielabnt0.ie.cuhk.edu.hk
[43200] 114.99.189.137.in-addr.arpa. domain name pointer ntservera.ie.cuhk.edu.hk
[43200] 115.99.189.137.in-addr.arpa. domain name pointer iealinux2.ie.cuhk.edu.hk
[43200] 116.99.189.137.in-addr.arpa. domain name pointer iealinux4.ie.cuhk.edu.hk
[43200] 117.99.189.137.in-addr.arpa. domain name pointer iealinux5.ie.cuhk.edu.hk
[43200] 118.99.189.137.in-addr.arpa. domain name pointer samba-srv.ie.cuhk.edu.hk
[43200] 119.99.189.137.in-addr.arpa. domain name pointer samba-srv2.ie.cuhk.edu.hk
[43200] 120.99.189.137.in-addr.arpa. domain name pointer pcgate.ie.cuhk.edu.hk
[43200] 121.99.189.137.in-addr.arpa. domain name pointer ielabsrv1.ie.cuhk.edu.hk
[43200] 122.99.189.137.in-addr.arpa. domain name pointer pcgate2.ie.cuhk.edu.hk
[0] 123.99.189.137.in-addr.arpa.: domain name does not exist
[0] 124.99.189.137.in-addr.arpa.: domain name does not exist
[0] 125.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 126.99.189.137.in-addr.arpa. domain name pointer router991.ie.cuhk.edu.hk
[0] 127.99.189.137.in-addr.arpa.: domain name does not exist
[0] 128.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 129.99.189.137.in-addr.arpa. domain name pointer ntec1.ie.cuhk.edu.hk
[43200] 130.99.189.137.in-addr.arpa. domain name pointer ntec2.ie.cuhk.edu.hk
[43200] 131.99.189.137.in-addr.arpa. domain name pointer ntec4.ie.cuhk.edu.hk
[43200] 132.99.189.137.in-addr.arpa. domain name pointer ntec7.ie.cuhk.edu.hk
[0] 133.99.189.137.in-addr.arpa.: domain name does not exist
[0] 134.99.189.137.in-addr.arpa.: domain name does not exist
[0] 135.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 136.99.189.137.in-addr.arpa. domain name pointer ntec-router.ie.cuhk.edu.hk
[0] 137.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 138.99.189.137.in-addr.arpa. domain name pointer ntec-fw.ie.cuhk.edu.hk
[43200] 139.99.189.137.in-addr.arpa. domain name pointer host1.ie.cuhk.edu.hk
[0] 140.99.189.137.in-addr.arpa.: domain name does not exist
[0] 141.99.189.137.in-addr.arpa.: domain name does not exist
[0] 142.99.189.137.in-addr.arpa.: domain name does not exist
[0] 143.99.189.137.in-addr.arpa.: domain name does not exist
[0] 144.99.189.137.in-addr.arpa.: domain name does not exist
[0] 145.99.189.137.in-addr.arpa.: domain name does not exist
[0] 146.99.189.137.in-addr.arpa.: domain name does not exist
[0] 147.99.189.137.in-addr.arpa.: domain name does not exist
[0] 148.99.189.137.in-addr.arpa.: domain name does not exist
[0] 149.99.189.137.in-addr.arpa.: domain name does not exist
[0] 150.99.189.137.in-addr.arpa.: domain name does not exist
[0] 151.99.189.137.in-addr.arpa.: domain name does not exist
[0] 152.99.189.137.in-addr.arpa.: domain name does not exist
[0] 153.99.189.137.in-addr.arpa.: domain name does not exist
[0] 154.99.189.137.in-addr.arpa.: domain name does not exist
[0] 155.99.189.137.in-addr.arpa.: domain name does not exist
[0] 156.99.189.137.in-addr.arpa.: domain name does not exist
[0] 157.99.189.137.in-addr.arpa.: domain name does not exist
[0] 158.99.189.137.in-addr.arpa.: domain name does not exist
[0] 159.99.189.137.in-addr.arpa.: domain name does not exist
[0] 160.99.189.137.in-addr.arpa.: domain name does not exist
[0] 161.99.189.137.in-addr.arpa.: domain name does not exist
[0] 162.99.189.137.in-addr.arpa.: domain name does not exist
[0] 163.99.189.137.in-addr.arpa.: domain name does not exist
[0] 164.99.189.137.in-addr.arpa.: domain name does not exist
[0] 165.99.189.137.in-addr.arpa.: domain name does not exist
[0] 166.99.189.137.in-addr.arpa.: domain name does not exist
[0] 167.99.189.137.in-addr.arpa.: domain name does not exist
[0] 168.99.189.137.in-addr.arpa.: domain name does not exist
[0] 169.99.189.137.in-addr.arpa.: domain name does not exist
[0] 170.99.189.137.in-addr.arpa.: domain name does not exist
[0] 171.99.189.137.in-addr.arpa.: domain name does not exist
[0] 172.99.189.137.in-addr.arpa.: domain name does not exist
[0] 173.99.189.137.in-addr.arpa.: domain name does not exist
[0] 174.99.189.137.in-addr.arpa.: domain name does not exist
[0] 175.99.189.137.in-addr.arpa.: domain name does not exist
[0] 176.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 177.99.189.137.in-addr.arpa. domain name pointer gsx22.ie.cuhk.edu.hk
[43200] 178.99.189.137.in-addr.arpa. domain name pointer ntecws.ie.cuhk.edu.hk
[0] 179.99.189.137.in-addr.arpa.: domain name does not exist
[0] 180.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 181.99.189.137.in-addr.arpa. domain name pointer router992-1.ie.cuhk.edu.hk
[43200] 182.99.189.137.in-addr.arpa. domain name pointer router992-2.ie.cuhk.edu.hk
[43200] 183.99.189.137.in-addr.arpa. domain name pointer c-srv1.ie.cuhk.edu.hk
[43200] 184.99.189.137.in-addr.arpa. domain name pointer w2ks.ie.cuhk.edu.hk
[43200] 185.99.189.137.in-addr.arpa. domain name pointer pc20.ie.cuhk.edu.hk
[43200] 186.99.189.137.in-addr.arpa. domain name pointer csirt.ie.cuhk.edu.hk
[0] 187.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 188.99.189.137.in-addr.arpa. domain name pointer pc11.ie.cuhk.edu.hk
[0] 189.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 190.99.189.137.in-addr.arpa. domain name pointer router992.ie.cuhk.edu.hk
[0] 191.99.189.137.in-addr.arpa.: domain name does not exist
[0] 192.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 193.99.189.137.in-addr.arpa. domain name pointer c2950t-4.ie.cuhk.edu.hk
[43200] 194.99.189.137.in-addr.arpa. domain name pointer iestp10.ie.cuhk.edu.hk
[43200] 195.99.189.137.in-addr.arpa. domain name pointer iestp12.ie.cuhk.edu.hk
[43200] 196.99.189.137.in-addr.arpa. domain name pointer 833demo.ie.cuhk.edu.hk
[43200] 197.99.189.137.in-addr.arpa. domain name pointer polycom1.ie.cuhk.edu.hk
[43200] 198.99.189.137.in-addr.arpa. domain name pointer iestp56.ie.cuhk.edu.hk
[43200] 199.99.189.137.in-addr.arpa. domain name pointer iestp161.ie.cuhk.edu.hk peteri2.ie.cuhk.edu.hk
[43200] 200.99.189.137.in-addr.arpa. domain name pointer 725pc1.ie.cuhk.edu.hk
[43200] 201.99.189.137.in-addr.arpa. domain name pointer temp123.ie.cuhk.edu.hk
[43200] 202.99.189.137.in-addr.arpa. domain name pointer mtdemo1.ie.cuhk.edu.hk
[43200] 203.99.189.137.in-addr.arpa. domain name pointer ppdemo1.ie.cuhk.edu.hk
[43200] 204.99.189.137.in-addr.arpa. domain name pointer ppdemo2.ie.cuhk.edu.hk
[43200] 205.99.189.137.in-addr.arpa. domain name pointer ieag1.ie.cuhk.edu.hk
[43200] 206.99.189.137.in-addr.arpa. domain name pointer ieag2.ie.cuhk.edu.hk
[43200] 207.99.189.137.in-addr.arpa. domain name pointer ieag3.ie.cuhk.edu.hk
[0] 208.99.189.137.in-addr.arpa.: domain name does not exist
[0] 209.99.189.137.in-addr.arpa.: domain name does not exist
[0] 210.99.189.137.in-addr.arpa.: domain name does not exist
[0] 211.99.189.137.in-addr.arpa.: domain name does not exist
[0] 212.99.189.137.in-addr.arpa.: domain name does not exist
[0] 213.99.189.137.in-addr.arpa.: domain name does not exist
[0] 214.99.189.137.in-addr.arpa.: domain name does not exist
[0] 215.99.189.137.in-addr.arpa.: domain name does not exist
[0] 216.99.189.137.in-addr.arpa.: domain name does not exist
[0] 217.99.189.137.in-addr.arpa.: domain name does not exist
[0] 218.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 219.99.189.137.in-addr.arpa. domain name pointer webproxy.ie.cuhk.edu.hk
[43200] 220.99.189.137.in-addr.arpa. domain name pointer ielabnt1.ie.cuhk.edu.hk
[0] 221.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 222.99.189.137.in-addr.arpa. domain name pointer gordonpc.ie.cuhk.edu.hk
[0] 223.99.189.137.in-addr.arpa.: domain name does not exist
[0] 224.99.189.137.in-addr.arpa.: domain name does not exist
[0] 225.99.189.137.in-addr.arpa.: domain name does not exist
[0] 226.99.189.137.in-addr.arpa.: domain name does not exist
[0] 227.99.189.137.in-addr.arpa.: domain name does not exist
[0] 228.99.189.137.in-addr.arpa.: domain name does not exist
[0] 229.99.189.137.in-addr.arpa.: domain name does not exist
[0] 230.99.189.137.in-addr.arpa.: domain name does not exist
[0] 231.99.189.137.in-addr.arpa.: domain name does not exist
[0] 232.99.189.137.in-addr.arpa.: domain name does not exist
[0] 233.99.189.137.in-addr.arpa.: domain name does not exist
[0] 234.99.189.137.in-addr.arpa.: domain name does not exist
[0] 235.99.189.137.in-addr.arpa.: domain name does not exist
[0] 236.99.189.137.in-addr.arpa.: domain name does not exist
[0] 237.99.189.137.in-addr.arpa.: domain name does not exist
[0] 238.99.189.137.in-addr.arpa.: domain name does not exist
[0] 239.99.189.137.in-addr.arpa.: domain name does not exist
[0] 240.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 241.99.189.137.in-addr.arpa. domain name pointer router993-1.ie.cuhk.edu.hk
[43200] 242.99.189.137.in-addr.arpa. domain name pointer router993-2.ie.cuhk.edu.hk
[0] 243.99.189.137.in-addr.arpa.: domain name does not exist
[0] 244.99.189.137.in-addr.arpa.: domain name does not exist
[0] 245.99.189.137.in-addr.arpa.: domain name does not exist
[0] 246.99.189.137.in-addr.arpa.: domain name does not exist
[0] 247.99.189.137.in-addr.arpa.: domain name does not exist
[0] 248.99.189.137.in-addr.arpa.: domain name does not exist
[0] 249.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 250.99.189.137.in-addr.arpa. domain name pointer router993.ie.cuhk.edu.hk
[0] 251.99.189.137.in-addr.arpa.: domain name does not exist
[0] 252.99.189.137.in-addr.arpa.: domain name does not exist
[43200] 253.99.189.137.in-addr.arpa. domain name pointer itsc-99253.ie.cuhk.edu.hk
[43200] 254.99.189.137.in-addr.arpa. domain name pointer router99.ie.cuhk.edu.hk
[0] 255.99.189.137.in-addr.arpa.: domain name does not exist