[0] 0.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 1.58.189.137.in-addr.arpa. domain name pointer gw-w.se.cuhk.edu.hk
[43200] 2.58.189.137.in-addr.arpa. domain name pointer se-wlan.se.cuhk.edu.hk
[0] 3.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 4.58.189.137.in-addr.arpa. domain name pointer hub-vlan.se.cuhk.edu.hk
[43200] 5.58.189.137.in-addr.arpa. domain name pointer vpn.se.cuhk.edu.hk
[43200] 6.58.189.137.in-addr.arpa. domain name pointer vpni.se.cuhk.edu.hk
[43200] 7.58.189.137.in-addr.arpa. domain name pointer sw-2.se.cuhk.edu.hk
[43200] 8.58.189.137.in-addr.arpa. domain name pointer cb3500.se.cuhk.edu.hk
[0] 9.58.189.137.in-addr.arpa.: domain name does not exist
[0] 10.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 11.58.189.137.in-addr.arpa. domain name pointer hub-01.se.cuhk.edu.hk
[0] 12.58.189.137.in-addr.arpa.: domain name does not exist
[0] 13.58.189.137.in-addr.arpa.: domain name does not exist
[0] 14.58.189.137.in-addr.arpa.: domain name does not exist
[0] 15.58.189.137.in-addr.arpa.: domain name does not exist
[0] 16.58.189.137.in-addr.arpa.: domain name does not exist
[0] 17.58.189.137.in-addr.arpa.: domain name does not exist
[0] 18.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 19.58.189.137.in-addr.arpa. domain name pointer hub-09.se.cuhk.edu.hk
[0] 20.58.189.137.in-addr.arpa.: domain name does not exist
[0] 21.58.189.137.in-addr.arpa.: domain name does not exist
[0] 22.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 23.58.189.137.in-addr.arpa. domain name pointer hub-12.se.cuhk.edu.hk
[43200] 24.58.189.137.in-addr.arpa. domain name pointer sw-test.se.cuhk.edu.hk
[43200] 25.58.189.137.in-addr.arpa. domain name pointer wclient01.se.cuhk.edu.hk
[43200] 26.58.189.137.in-addr.arpa. domain name pointer wclient02.se.cuhk.edu.hk
[43200] 27.58.189.137.in-addr.arpa. domain name pointer wclient03.se.cuhk.edu.hk
[43200] 28.58.189.137.in-addr.arpa. domain name pointer wclient04.se.cuhk.edu.hk
[43200] 29.58.189.137.in-addr.arpa. domain name pointer wclient05.se.cuhk.edu.hk
[43200] 30.58.189.137.in-addr.arpa. domain name pointer wclient06.se.cuhk.edu.hk
[43200] 31.58.189.137.in-addr.arpa. domain name pointer wclient07.se.cuhk.edu.hk
[43200] 32.58.189.137.in-addr.arpa. domain name pointer wclient08.se.cuhk.edu.hk
[43200] 33.58.189.137.in-addr.arpa. domain name pointer wclient09.se.cuhk.edu.hk
[43200] 34.58.189.137.in-addr.arpa. domain name pointer wclient10.se.cuhk.edu.hk
[43200] 35.58.189.137.in-addr.arpa. domain name pointer wclient11.se.cuhk.edu.hk
[43200] 36.58.189.137.in-addr.arpa. domain name pointer wclient12.se.cuhk.edu.hk
[43200] 37.58.189.137.in-addr.arpa. domain name pointer wclient13.se.cuhk.edu.hk
[43200] 38.58.189.137.in-addr.arpa. domain name pointer wclient14.se.cuhk.edu.hk
[43200] 39.58.189.137.in-addr.arpa. domain name pointer wclient15.se.cuhk.edu.hk
[43200] 40.58.189.137.in-addr.arpa. domain name pointer wclient16.se.cuhk.edu.hk
[43200] 41.58.189.137.in-addr.arpa. domain name pointer wclient17.se.cuhk.edu.hk
[43200] 42.58.189.137.in-addr.arpa. domain name pointer wclient18.se.cuhk.edu.hk
[43200] 43.58.189.137.in-addr.arpa. domain name pointer wclient19.se.cuhk.edu.hk
[43200] 44.58.189.137.in-addr.arpa. domain name pointer wclient20.se.cuhk.edu.hk
[43200] 45.58.189.137.in-addr.arpa. domain name pointer wclient21.se.cuhk.edu.hk
[43200] 46.58.189.137.in-addr.arpa. domain name pointer wclient22.se.cuhk.edu.hk
[43200] 47.58.189.137.in-addr.arpa. domain name pointer wclient23.se.cuhk.edu.hk
[43200] 48.58.189.137.in-addr.arpa. domain name pointer wclient24.se.cuhk.edu.hk
[43200] 49.58.189.137.in-addr.arpa. domain name pointer wclient25.se.cuhk.edu.hk
[43200] 50.58.189.137.in-addr.arpa. domain name pointer wclient26.se.cuhk.edu.hk
[43200] 51.58.189.137.in-addr.arpa. domain name pointer wclient27.se.cuhk.edu.hk
[43200] 52.58.189.137.in-addr.arpa. domain name pointer wclient28.se.cuhk.edu.hk
[43200] 53.58.189.137.in-addr.arpa. domain name pointer wclient29.se.cuhk.edu.hk
[43200] 54.58.189.137.in-addr.arpa. domain name pointer wclient30.se.cuhk.edu.hk
[43200] 55.58.189.137.in-addr.arpa. domain name pointer wclient31.se.cuhk.edu.hk
[43200] 56.58.189.137.in-addr.arpa. domain name pointer wclient32.se.cuhk.edu.hk
[43200] 57.58.189.137.in-addr.arpa. domain name pointer wclient33.se.cuhk.edu.hk
[43200] 58.58.189.137.in-addr.arpa. domain name pointer wclient34.se.cuhk.edu.hk
[43200] 59.58.189.137.in-addr.arpa. domain name pointer wclient35.se.cuhk.edu.hk
[43200] 60.58.189.137.in-addr.arpa. domain name pointer wclient36.se.cuhk.edu.hk
[43200] 61.58.189.137.in-addr.arpa. domain name pointer wclient37.se.cuhk.edu.hk
[43200] 62.58.189.137.in-addr.arpa. domain name pointer wclient38.se.cuhk.edu.hk
[43200] 63.58.189.137.in-addr.arpa. domain name pointer wclient39.se.cuhk.edu.hk
[43200] 64.58.189.137.in-addr.arpa. domain name pointer wclient40.se.cuhk.edu.hk
[43200] 65.58.189.137.in-addr.arpa. domain name pointer wclient41.se.cuhk.edu.hk
[43200] 66.58.189.137.in-addr.arpa. domain name pointer wclient42.se.cuhk.edu.hk
[43200] 67.58.189.137.in-addr.arpa. domain name pointer wclient43.se.cuhk.edu.hk
[43200] 68.58.189.137.in-addr.arpa. domain name pointer wclient44.se.cuhk.edu.hk
[43200] 69.58.189.137.in-addr.arpa. domain name pointer wclient45.se.cuhk.edu.hk
[43200] 70.58.189.137.in-addr.arpa. domain name pointer wclient46.se.cuhk.edu.hk
[43200] 71.58.189.137.in-addr.arpa. domain name pointer wclient47.se.cuhk.edu.hk
[43200] 72.58.189.137.in-addr.arpa. domain name pointer wclient48.se.cuhk.edu.hk
[43200] 73.58.189.137.in-addr.arpa. domain name pointer wclient49.se.cuhk.edu.hk
[43200] 74.58.189.137.in-addr.arpa. domain name pointer wclient50.se.cuhk.edu.hk
[43200] 75.58.189.137.in-addr.arpa. domain name pointer wclient51.se.cuhk.edu.hk
[43200] 76.58.189.137.in-addr.arpa. domain name pointer wclient52.se.cuhk.edu.hk
[43200] 77.58.189.137.in-addr.arpa. domain name pointer wclient53.se.cuhk.edu.hk
[43200] 78.58.189.137.in-addr.arpa. domain name pointer wclient54.se.cuhk.edu.hk
[43200] 79.58.189.137.in-addr.arpa. domain name pointer wclient55.se.cuhk.edu.hk
[43200] 80.58.189.137.in-addr.arpa. domain name pointer wclient56.se.cuhk.edu.hk
[43200] 81.58.189.137.in-addr.arpa. domain name pointer wclient57.se.cuhk.edu.hk
[43200] 82.58.189.137.in-addr.arpa. domain name pointer wclient58.se.cuhk.edu.hk
[43200] 83.58.189.137.in-addr.arpa. domain name pointer wclient59.se.cuhk.edu.hk
[43200] 84.58.189.137.in-addr.arpa. domain name pointer wclient60.se.cuhk.edu.hk
[43200] 85.58.189.137.in-addr.arpa. domain name pointer wclient61.se.cuhk.edu.hk
[43200] 86.58.189.137.in-addr.arpa. domain name pointer wclient62.se.cuhk.edu.hk
[43200] 87.58.189.137.in-addr.arpa. domain name pointer wclient63.se.cuhk.edu.hk
[43200] 88.58.189.137.in-addr.arpa. domain name pointer wclient64.se.cuhk.edu.hk
[43200] 89.58.189.137.in-addr.arpa. domain name pointer wclient65.se.cuhk.edu.hk
[43200] 90.58.189.137.in-addr.arpa. domain name pointer wclient66.se.cuhk.edu.hk
[43200] 91.58.189.137.in-addr.arpa. domain name pointer wclient67.se.cuhk.edu.hk
[43200] 92.58.189.137.in-addr.arpa. domain name pointer wclient68.se.cuhk.edu.hk
[43200] 93.58.189.137.in-addr.arpa. domain name pointer wclient69.se.cuhk.edu.hk
[43200] 94.58.189.137.in-addr.arpa. domain name pointer wclient70.se.cuhk.edu.hk
[43200] 95.58.189.137.in-addr.arpa. domain name pointer wclient71.se.cuhk.edu.hk
[43200] 96.58.189.137.in-addr.arpa. domain name pointer wclient72.se.cuhk.edu.hk
[43200] 97.58.189.137.in-addr.arpa. domain name pointer wclient73.se.cuhk.edu.hk
[43200] 98.58.189.137.in-addr.arpa. domain name pointer wclient74.se.cuhk.edu.hk
[43200] 99.58.189.137.in-addr.arpa. domain name pointer wclient75.se.cuhk.edu.hk
[43200] 100.58.189.137.in-addr.arpa. domain name pointer cuse400.se.cuhk.edu.hk
[43200] 101.58.189.137.in-addr.arpa. domain name pointer cuse401.se.cuhk.edu.hk
[43200] 102.58.189.137.in-addr.arpa. domain name pointer cuse402.se.cuhk.edu.hk
[43200] 103.58.189.137.in-addr.arpa. domain name pointer cuse403.se.cuhk.edu.hk
[43200] 104.58.189.137.in-addr.arpa. domain name pointer cuse404.se.cuhk.edu.hk
[43200] 105.58.189.137.in-addr.arpa. domain name pointer cuse405.se.cuhk.edu.hk
[43200] 106.58.189.137.in-addr.arpa. domain name pointer cuse406.se.cuhk.edu.hk
[43200] 107.58.189.137.in-addr.arpa. domain name pointer cuse407.se.cuhk.edu.hk
[43200] 108.58.189.137.in-addr.arpa. domain name pointer cuse408.se.cuhk.edu.hk
[0] 109.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 110.58.189.137.in-addr.arpa. domain name pointer hccl01.se.cuhk.edu.hk
[0] 111.58.189.137.in-addr.arpa.: domain name does not exist
[0] 112.58.189.137.in-addr.arpa.: domain name does not exist
[0] 113.58.189.137.in-addr.arpa.: domain name does not exist
[0] 114.58.189.137.in-addr.arpa.: domain name does not exist
[0] 115.58.189.137.in-addr.arpa.: domain name does not exist
[0] 116.58.189.137.in-addr.arpa.: domain name does not exist
[0] 117.58.189.137.in-addr.arpa.: domain name does not exist
[0] 118.58.189.137.in-addr.arpa.: domain name does not exist
[0] 119.58.189.137.in-addr.arpa.: domain name does not exist
[0] 120.58.189.137.in-addr.arpa.: domain name does not exist
[0] 121.58.189.137.in-addr.arpa.: domain name does not exist
[0] 122.58.189.137.in-addr.arpa.: domain name does not exist
[0] 123.58.189.137.in-addr.arpa.: domain name does not exist
[0] 124.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 125.58.189.137.in-addr.arpa. domain name pointer hprp5400.se.cuhk.edu.hk
[43200] 126.58.189.137.in-addr.arpa. domain name pointer se-fw.se.cuhk.edu.hk
[43200] 127.58.189.137.in-addr.arpa. domain name pointer seem-cisco.se.cuhk.edu.hk
[43200] 128.58.189.137.in-addr.arpa. domain name pointer modem00.se.cuhk.edu.hk
[43200] 129.58.189.137.in-addr.arpa. domain name pointer modem01.se.cuhk.edu.hk
[43200] 130.58.189.137.in-addr.arpa. domain name pointer modem02.se.cuhk.edu.hk
[43200] 131.58.189.137.in-addr.arpa. domain name pointer modem03.se.cuhk.edu.hk
[43200] 132.58.189.137.in-addr.arpa. domain name pointer modem04.se.cuhk.edu.hk
[43200] 133.58.189.137.in-addr.arpa. domain name pointer modem05.se.cuhk.edu.hk
[43200] 134.58.189.137.in-addr.arpa. domain name pointer modem06.se.cuhk.edu.hk
[43200] 135.58.189.137.in-addr.arpa. domain name pointer modem07.se.cuhk.edu.hk
[43200] 136.58.189.137.in-addr.arpa. domain name pointer modem08.se.cuhk.edu.hk
[43200] 137.58.189.137.in-addr.arpa. domain name pointer modem09.se.cuhk.edu.hk
[43200] 138.58.189.137.in-addr.arpa. domain name pointer modem10.se.cuhk.edu.hk
[43200] 139.58.189.137.in-addr.arpa. domain name pointer modem11.se.cuhk.edu.hk
[43200] 140.58.189.137.in-addr.arpa. domain name pointer modem12.se.cuhk.edu.hk
[43200] 141.58.189.137.in-addr.arpa. domain name pointer modem13.se.cuhk.edu.hk
[43200] 142.58.189.137.in-addr.arpa. domain name pointer modem14.se.cuhk.edu.hk
[43200] 143.58.189.137.in-addr.arpa. domain name pointer modem15.se.cuhk.edu.hk
[43200] 144.58.189.137.in-addr.arpa. domain name pointer modem16.se.cuhk.edu.hk
[43200] 145.58.189.137.in-addr.arpa. domain name pointer modem17.se.cuhk.edu.hk
[43200] 146.58.189.137.in-addr.arpa. domain name pointer modem18.se.cuhk.edu.hk
[43200] 147.58.189.137.in-addr.arpa. domain name pointer modem19.se.cuhk.edu.hk
[43200] 148.58.189.137.in-addr.arpa. domain name pointer modem20.se.cuhk.edu.hk
[43200] 149.58.189.137.in-addr.arpa. domain name pointer modem21.se.cuhk.edu.hk
[43200] 150.58.189.137.in-addr.arpa. domain name pointer modem22.se.cuhk.edu.hk
[43200] 151.58.189.137.in-addr.arpa. domain name pointer modem23.se.cuhk.edu.hk
[43200] 152.58.189.137.in-addr.arpa. domain name pointer vpnc01.se.cuhk.edu.hk
[43200] 153.58.189.137.in-addr.arpa. domain name pointer vpnc02.se.cuhk.edu.hk
[43200] 154.58.189.137.in-addr.arpa. domain name pointer vpnc03.se.cuhk.edu.hk
[43200] 155.58.189.137.in-addr.arpa. domain name pointer vpnc04.se.cuhk.edu.hk
[43200] 156.58.189.137.in-addr.arpa. domain name pointer vpnc05.se.cuhk.edu.hk
[43200] 157.58.189.137.in-addr.arpa. domain name pointer vpnc06.se.cuhk.edu.hk
[43200] 158.58.189.137.in-addr.arpa. domain name pointer vpnc07.se.cuhk.edu.hk
[43200] 159.58.189.137.in-addr.arpa. domain name pointer vpnc08.se.cuhk.edu.hk
[43200] 160.58.189.137.in-addr.arpa. domain name pointer vpnc09.se.cuhk.edu.hk
[43200] 161.58.189.137.in-addr.arpa. domain name pointer vpnc10.se.cuhk.edu.hk
[0] 162.58.189.137.in-addr.arpa.: domain name does not exist
[0] 163.58.189.137.in-addr.arpa.: domain name does not exist
[0] 164.58.189.137.in-addr.arpa.: domain name does not exist
[0] 165.58.189.137.in-addr.arpa.: domain name does not exist
[0] 166.58.189.137.in-addr.arpa.: domain name does not exist
[0] 167.58.189.137.in-addr.arpa.: domain name does not exist
[0] 168.58.189.137.in-addr.arpa.: domain name does not exist
[0] 169.58.189.137.in-addr.arpa.: domain name does not exist
[0] 170.58.189.137.in-addr.arpa.: domain name does not exist
[0] 171.58.189.137.in-addr.arpa.: domain name does not exist
[0] 172.58.189.137.in-addr.arpa.: domain name does not exist
[0] 173.58.189.137.in-addr.arpa.: domain name does not exist
[0] 174.58.189.137.in-addr.arpa.: domain name does not exist
[0] 175.58.189.137.in-addr.arpa.: domain name does not exist
[0] 176.58.189.137.in-addr.arpa.: domain name does not exist
[0] 177.58.189.137.in-addr.arpa.: domain name does not exist
[0] 178.58.189.137.in-addr.arpa.: domain name does not exist
[0] 179.58.189.137.in-addr.arpa.: domain name does not exist
[0] 180.58.189.137.in-addr.arpa.: domain name does not exist
[0] 181.58.189.137.in-addr.arpa.: domain name does not exist
[0] 182.58.189.137.in-addr.arpa.: domain name does not exist
[0] 183.58.189.137.in-addr.arpa.: domain name does not exist
[0] 184.58.189.137.in-addr.arpa.: domain name does not exist
[0] 185.58.189.137.in-addr.arpa.: domain name does not exist
[0] 186.58.189.137.in-addr.arpa.: domain name does not exist
[0] 187.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 188.58.189.137.in-addr.arpa. domain name pointer e6500.se.cuhk.edu.hk
[0] 189.58.189.137.in-addr.arpa.: domain name does not exist
[0] 190.58.189.137.in-addr.arpa.: domain name does not exist
[0] 191.58.189.137.in-addr.arpa.: domain name does not exist
[0] 192.58.189.137.in-addr.arpa.: domain name does not exist
[0] 193.58.189.137.in-addr.arpa.: domain name does not exist
[0] 194.58.189.137.in-addr.arpa.: domain name does not exist
[0] 195.58.189.137.in-addr.arpa.: domain name does not exist
[0] 196.58.189.137.in-addr.arpa.: domain name does not exist
[43200] 197.58.189.137.in-addr.arpa. domain name pointer lamvpc.se.cuhk.edu.hk
[43200] 198.58.189.137.in-addr.arpa. domain name pointer ray-vpc.se.cuhk.edu.hk
[43200] 199.58.189.137.in-addr.arpa. domain name pointer cuse170-ge0.se.cuhk.edu.hk
[43200] 200.58.189.137.in-addr.arpa. domain name pointer selj4o.se.cuhk.edu.hk
[43200] 201.58.189.137.in-addr.arpa. domain name pointer selj4si.se.cuhk.edu.hk
[43200] 202.58.189.137.in-addr.arpa. domain name pointer selj115b.se.cuhk.edu.hk
[43200] 203.58.189.137.in-addr.arpa. domain name pointer selj102a.se.cuhk.edu.hk
[43200] 204.58.189.137.in-addr.arpa. domain name pointer selj223.se.cuhk.edu.hk
[43200] 205.58.189.137.in-addr.arpa. domain name pointer selj205.se.cuhk.edu.hk
[43200] 206.58.189.137.in-addr.arpa. domain name pointer selj122b.se.cuhk.edu.hk
[43200] 207.58.189.137.in-addr.arpa. domain name pointer selj121.se.cuhk.edu.hk
[43200] 208.58.189.137.in-addr.arpa. domain name pointer selj115.se.cuhk.edu.hk
[43200] 209.58.189.137.in-addr.arpa. domain name pointer selj105a.se.cuhk.edu.hk
[43200] 210.58.189.137.in-addr.arpa. domain name pointer selj218a.se.cuhk.edu.hk
[43200] 211.58.189.137.in-addr.arpa. domain name pointer selj219a.se.cuhk.edu.hk
[43200] 212.58.189.137.in-addr.arpa. domain name pointer selj104a.se.cuhk.edu.hk
[43200] 213.58.189.137.in-addr.arpa. domain name pointer selj121a.se.cuhk.edu.hk
[43200] 214.58.189.137.in-addr.arpa. domain name pointer selj121b.se.cuhk.edu.hk
[43200] 215.58.189.137.in-addr.arpa. domain name pointer selj114b.se.cuhk.edu.hk
[43200] 216.58.189.137.in-addr.arpa. domain name pointer sephaser.se.cuhk.edu.hk
[43200] 217.58.189.137.in-addr.arpa. domain name pointer selj204a.se.cuhk.edu.hk
[43200] 218.58.189.137.in-addr.arpa. domain name pointer selj217b.se.cuhk.edu.hk
[43200] 219.58.189.137.in-addr.arpa. domain name pointer selj114a.se.cuhk.edu.hk
[43200] 220.58.189.137.in-addr.arpa. domain name pointer setpor1.se.cuhk.edu.hk
[43200] 221.58.189.137.in-addr.arpa. domain name pointer selj224a.se.cuhk.edu.hk
[43200] 222.58.189.137.in-addr.arpa. domain name pointer seljdl1.se.cuhk.edu.hk
[43200] 223.58.189.137.in-addr.arpa. domain name pointer seljhcc1.se.cuhk.edu.hk
[43200] 224.58.189.137.in-addr.arpa. domain name pointer selj117.se.cuhk.edu.hk
[43200] 225.58.189.137.in-addr.arpa. domain name pointer selj225.se.cuhk.edu.hk
[43200] 226.58.189.137.in-addr.arpa. domain name pointer selj226.se.cuhk.edu.hk
[43200] 227.58.189.137.in-addr.arpa. domain name pointer selj227.se.cuhk.edu.hk
[43200] 228.58.189.137.in-addr.arpa. domain name pointer selj228.se.cuhk.edu.hk
[43200] 229.58.189.137.in-addr.arpa. domain name pointer selj229.se.cuhk.edu.hk
[43200] 230.58.189.137.in-addr.arpa. domain name pointer selj230.se.cuhk.edu.hk
[43200] 231.58.189.137.in-addr.arpa. domain name pointer selj231.se.cuhk.edu.hk
[43200] 232.58.189.137.in-addr.arpa. domain name pointer selj232.se.cuhk.edu.hk
[43200] 233.58.189.137.in-addr.arpa. domain name pointer selj233.se.cuhk.edu.hk
[43200] 234.58.189.137.in-addr.arpa. domain name pointer selj234.se.cuhk.edu.hk
[0] 235.58.189.137.in-addr.arpa.: domain name does not exist
[0] 236.58.189.137.in-addr.arpa.: domain name does not exist
[0] 237.58.189.137.in-addr.arpa.: domain name does not exist
[0] 238.58.189.137.in-addr.arpa.: domain name does not exist
[0] 239.58.189.137.in-addr.arpa.: domain name does not exist
[0] 240.58.189.137.in-addr.arpa.: domain name does not exist
[0] 241.58.189.137.in-addr.arpa.: domain name does not exist
[0] 242.58.189.137.in-addr.arpa.: domain name does not exist
[0] 243.58.189.137.in-addr.arpa.: domain name does not exist
[0] 244.58.189.137.in-addr.arpa.: domain name does not exist
[0] 245.58.189.137.in-addr.arpa.: domain name does not exist
[0] 246.58.189.137.in-addr.arpa.: domain name does not exist
[0] 247.58.189.137.in-addr.arpa.: domain name does not exist
[0] 248.58.189.137.in-addr.arpa.: domain name does not exist
[0] 249.58.189.137.in-addr.arpa.: domain name does not exist
[0] 250.58.189.137.in-addr.arpa.: domain name does not exist
[0] 251.58.189.137.in-addr.arpa.: domain name does not exist
[0] 252.58.189.137.in-addr.arpa.: domain name does not exist
[0] 253.58.189.137.in-addr.arpa.: domain name does not exist
[0] 254.58.189.137.in-addr.arpa.: domain name does not exist
[0] 255.58.189.137.in-addr.arpa.: domain name does not exist