Host 0.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 1.94.189.137.in-addr.arpa domain name pointer eng-ser1.erg.cuhk.edu.hk.
[43200] 2.94.189.137.in-addr.arpa domain name pointer eng-ser2.erg.cuhk.edu.hk.
[43200] 3.94.189.137.in-addr.arpa domain name pointer eng-ser3.erg.cuhk.edu.hk.
[43200] 4.94.189.137.in-addr.arpa domain name pointer eng-ser4.erg.cuhk.edu.hk.
[43200] 5.94.189.137.in-addr.arpa domain name pointer eng-ser5.erg.cuhk.edu.hk.
[43200] 6.94.189.137.in-addr.arpa domain name pointer eng-ser6.erg.cuhk.edu.hk.
[43200] 7.94.189.137.in-addr.arpa domain name pointer eng-ser7.erg.cuhk.edu.hk.
Host 8.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 9.94.189.137.in-addr.arpa domain name pointer b350t.erg.cuhk.edu.hk.
[43200] 10.94.189.137.in-addr.arpa domain name pointer e6500.erg.cuhk.edu.hk.
[43200] 11.94.189.137.in-addr.arpa domain name pointer engoffp1.erg.cuhk.edu.hk.
[43200] 12.94.189.137.in-addr.arpa domain name pointer engoffp2.erg.cuhk.edu.hk.
[43200] 13.94.189.137.in-addr.arpa domain name pointer engoffp3.erg.cuhk.edu.hk.
[43200] 14.94.189.137.in-addr.arpa domain name pointer engoffp4.erg.cuhk.edu.hk.
[43200] 15.94.189.137.in-addr.arpa domain name pointer engoffp5.erg.cuhk.edu.hk.
[43200] 16.94.189.137.in-addr.arpa domain name pointer engoffp6.erg.cuhk.edu.hk.
[43200] 17.94.189.137.in-addr.arpa domain name pointer engoffp7.erg.cuhk.edu.hk.
[43200] 18.94.189.137.in-addr.arpa domain name pointer engoffp8.erg.cuhk.edu.hk.
[43200] 19.94.189.137.in-addr.arpa domain name pointer engoffp9.erg.cuhk.edu.hk.
[43200] 20.94.189.137.in-addr.arpa domain name pointer enghp6.erg.cuhk.edu.hk.
[43200] 21.94.189.137.in-addr.arpa domain name pointer color.erg.cuhk.edu.hk.
[43200] 22.94.189.137.in-addr.arpa domain name pointer 402e2pc.erg.cuhk.edu.hk.
[43200] 23.94.189.137.in-addr.arpa domain name pointer engofnb1.erg.cuhk.edu.hk.
[43200] 24.94.189.137.in-addr.arpa domain name pointer engstdp1.erg.cuhk.edu.hk.
[43200] 25.94.189.137.in-addr.arpa domain name pointer engstdp2.erg.cuhk.edu.hk.
[43200] 26.94.189.137.in-addr.arpa domain name pointer khost1.erg.cuhk.edu.hk.
[43200] 27.94.189.137.in-addr.arpa domain name pointer khost2.erg.cuhk.edu.hk.
[43200] 28.94.189.137.in-addr.arpa domain name pointer khost3.erg.cuhk.edu.hk.
[43200] 29.94.189.137.in-addr.arpa domain name pointer khost4.erg.cuhk.edu.hk.
[43200] 30.94.189.137.in-addr.arpa domain name pointer kap.erg.cuhk.edu.hk.
[43200] 31.94.189.137.in-addr.arpa domain name pointer kantest1.erg.cuhk.edu.hk.
[43200] 32.94.189.137.in-addr.arpa domain name pointer kantest2.erg.cuhk.edu.hk.
[43200] 33.94.189.137.in-addr.arpa domain name pointer kantest3.erg.cuhk.edu.hk.
Host 34.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 35.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 36.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 37.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 38.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 39.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 40.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 41.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 42.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 43.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 44.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 45.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 46.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 47.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 48.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 49.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 50.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 51.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 52.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 53.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 54.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 55.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 56.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 57.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 58.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 59.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 60.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 61.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 62.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 63.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 64.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 65.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 66.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 67.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 68.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 69.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 70.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 71.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 72.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 73.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 74.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 75.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 76.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 77.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 78.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 79.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 80.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 81.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 82.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 83.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 84.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 85.94.189.137.in-addr.arpa domain name pointer cintecfw.erg.cuhk.edu.hk.
Host 86.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 87.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 88.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 89.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 90.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 91.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 92.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 93.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 94.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 95.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 96.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 97.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 98.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 99.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 100.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 101.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 102.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 103.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 104.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 105.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 106.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 107.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 108.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 109.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 110.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 111.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 112.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 113.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 114.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 115.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 116.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 117.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 118.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 119.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 120.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 121.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 122.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 123.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 124.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 125.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 126.94.189.137.in-addr.arpa domain name pointer router941.erg.cuhk.edu.hk.
Host 127.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 128.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 129.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 130.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 131.94.189.137.in-addr.arpa domain name pointer dialup1-01.erg.cuhk.edu.hk.
[43200] 132.94.189.137.in-addr.arpa domain name pointer dialup1-02.erg.cuhk.edu.hk.
[43200] 133.94.189.137.in-addr.arpa domain name pointer dialup1-03.erg.cuhk.edu.hk.
[43200] 134.94.189.137.in-addr.arpa domain name pointer dialup1-04.erg.cuhk.edu.hk.
[43200] 135.94.189.137.in-addr.arpa domain name pointer dialup1-05.erg.cuhk.edu.hk.
[43200] 136.94.189.137.in-addr.arpa domain name pointer dialup1-06.erg.cuhk.edu.hk.
[43200] 137.94.189.137.in-addr.arpa domain name pointer dialup1-07.erg.cuhk.edu.hk.
[43200] 138.94.189.137.in-addr.arpa domain name pointer dialup1-08.erg.cuhk.edu.hk.
[43200] 139.94.189.137.in-addr.arpa domain name pointer dialup1-09.erg.cuhk.edu.hk.
[43200] 140.94.189.137.in-addr.arpa domain name pointer dialup1-10.erg.cuhk.edu.hk.
[43200] 141.94.189.137.in-addr.arpa domain name pointer dialup1-11.erg.cuhk.edu.hk.
[43200] 142.94.189.137.in-addr.arpa domain name pointer dialup1-12.erg.cuhk.edu.hk.
[43200] 143.94.189.137.in-addr.arpa domain name pointer dialup1-13.erg.cuhk.edu.hk.
[43200] 144.94.189.137.in-addr.arpa domain name pointer dialup1-14.erg.cuhk.edu.hk.
[43200] 145.94.189.137.in-addr.arpa domain name pointer dialup1-15.erg.cuhk.edu.hk.
[43200] 146.94.189.137.in-addr.arpa domain name pointer dialup1-16.erg.cuhk.edu.hk.
[43200] 147.94.189.137.in-addr.arpa domain name pointer dialup2-01.erg.cuhk.edu.hk.
[43200] 148.94.189.137.in-addr.arpa domain name pointer dialup2-02.erg.cuhk.edu.hk.
[43200] 149.94.189.137.in-addr.arpa domain name pointer dialup2-03.erg.cuhk.edu.hk.
[43200] 150.94.189.137.in-addr.arpa domain name pointer dialup2-04.erg.cuhk.edu.hk.
[43200] 151.94.189.137.in-addr.arpa domain name pointer dialup2-05.erg.cuhk.edu.hk.
[43200] 152.94.189.137.in-addr.arpa domain name pointer dialup2-06.erg.cuhk.edu.hk.
[43200] 153.94.189.137.in-addr.arpa domain name pointer dialup2-07.erg.cuhk.edu.hk.
[43200] 154.94.189.137.in-addr.arpa domain name pointer dialup2-08.erg.cuhk.edu.hk.
[43200] 155.94.189.137.in-addr.arpa domain name pointer dialup2-09.erg.cuhk.edu.hk.
[43200] 156.94.189.137.in-addr.arpa domain name pointer dialup2-10.erg.cuhk.edu.hk.
[43200] 157.94.189.137.in-addr.arpa domain name pointer dialup2-11.erg.cuhk.edu.hk.
[43200] 158.94.189.137.in-addr.arpa domain name pointer dialup2-12.erg.cuhk.edu.hk.
[43200] 159.94.189.137.in-addr.arpa domain name pointer dialup2-13.erg.cuhk.edu.hk.
[43200] 160.94.189.137.in-addr.arpa domain name pointer dialup2-14.erg.cuhk.edu.hk.
[43200] 161.94.189.137.in-addr.arpa domain name pointer dialup2-15.erg.cuhk.edu.hk.
[43200] 162.94.189.137.in-addr.arpa domain name pointer dialup2-16.erg.cuhk.edu.hk.
[43200] 163.94.189.137.in-addr.arpa domain name pointer dialup3-01.erg.cuhk.edu.hk.
[43200] 164.94.189.137.in-addr.arpa domain name pointer dialup3-02.erg.cuhk.edu.hk.
[43200] 165.94.189.137.in-addr.arpa domain name pointer dialup3-03.erg.cuhk.edu.hk.
[43200] 166.94.189.137.in-addr.arpa domain name pointer dialup3-04.erg.cuhk.edu.hk.
[43200] 167.94.189.137.in-addr.arpa domain name pointer dialup3-05.erg.cuhk.edu.hk.
[43200] 168.94.189.137.in-addr.arpa domain name pointer dialup3-06.erg.cuhk.edu.hk.
[43200] 169.94.189.137.in-addr.arpa domain name pointer dialup3-07.erg.cuhk.edu.hk.
[43200] 170.94.189.137.in-addr.arpa domain name pointer dialup3-08.erg.cuhk.edu.hk.
[43200] 171.94.189.137.in-addr.arpa domain name pointer dialup3-09.erg.cuhk.edu.hk.
[43200] 172.94.189.137.in-addr.arpa domain name pointer dialup3-10.erg.cuhk.edu.hk.
[43200] 173.94.189.137.in-addr.arpa domain name pointer dialup3-11.erg.cuhk.edu.hk.
[43200] 174.94.189.137.in-addr.arpa domain name pointer dialup3-12.erg.cuhk.edu.hk.
[43200] 175.94.189.137.in-addr.arpa domain name pointer dialup3-13.erg.cuhk.edu.hk.
[43200] 176.94.189.137.in-addr.arpa domain name pointer dialup3-14.erg.cuhk.edu.hk.
[43200] 177.94.189.137.in-addr.arpa domain name pointer dialup3-15.erg.cuhk.edu.hk.
[43200] 178.94.189.137.in-addr.arpa domain name pointer dialup3-16.erg.cuhk.edu.hk.
[43200] 179.94.189.137.in-addr.arpa domain name pointer cisco-md1.erg.cuhk.edu.hk.
[43200] 180.94.189.137.in-addr.arpa domain name pointer cisco-md2.erg.cuhk.edu.hk.
[43200] 181.94.189.137.in-addr.arpa domain name pointer cisco-md3.erg.cuhk.edu.hk.
[43200] 182.94.189.137.in-addr.arpa domain name pointer usr-nmc.erg.cuhk.edu.hk.
Host 183.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 184.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 185.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 186.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 187.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 188.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 189.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 190.94.189.137.in-addr.arpa domain name pointer router942.erg.cuhk.edu.hk.
Host 191.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 192.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 193.94.189.137.in-addr.arpa domain name pointer vcon508.erg.cuhk.edu.hk.
[43200] 194.94.189.137.in-addr.arpa domain name pointer csetest.erg.cuhk.edu.hk.
[43200] 195.94.189.137.in-addr.arpa domain name pointer eng-ser11.erg.cuhk.edu.hk.
[43200] 196.94.189.137.in-addr.arpa domain name pointer eng-ser12.erg.cuhk.edu.hk.
[43200] 197.94.189.137.in-addr.arpa domain name pointer eng-ser13.erg.cuhk.edu.hk.
[43200] 198.94.189.137.in-addr.arpa domain name pointer eng-ser14.erg.cuhk.edu.hk.
[43200] 199.94.189.137.in-addr.arpa domain name pointer eng-ser11-2.erg.cuhk.edu.hk.
[43200] 200.94.189.137.in-addr.arpa domain name pointer aruba.erg.cuhk.edu.hk.
[43200] 201.94.189.137.in-addr.arpa domain name pointer bluesocket.erg.cuhk.edu.hk.
[43200] 202.94.189.137.in-addr.arpa domain name pointer eng-ser15.erg.cuhk.edu.hk.
[43200] 203.94.189.137.in-addr.arpa domain name pointer eng-ser16.erg.cuhk.edu.hk.
[43200] 204.94.189.137.in-addr.arpa domain name pointer demo1.erg.cuhk.edu.hk.
[43200] 205.94.189.137.in-addr.arpa domain name pointer demo2.erg.cuhk.edu.hk.
[43200] 206.94.189.137.in-addr.arpa domain name pointer demo3.erg.cuhk.edu.hk.
Host 207.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 208.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 209.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 210.94.189.137.in-addr.arpa domain name pointer 702-pjt.erg.cuhk.edu.hk.
[43200] 211.94.189.137.in-addr.arpa domain name pointer shiae-fw.erg.cuhk.edu.hk.
Host 212.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 213.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 214.94.189.137.in-addr.arpa domain name pointer shiaetest1.erg.cuhk.edu.hk.
[43200] 215.94.189.137.in-addr.arpa domain name pointer shiaetest2.erg.cuhk.edu.hk.
[43200] 216.94.189.137.in-addr.arpa domain name pointer shiaepc1.erg.cuhk.edu.hk.
[43200] 217.94.189.137.in-addr.arpa domain name pointer shiaepc2.erg.cuhk.edu.hk.
[43200] 218.94.189.137.in-addr.arpa domain name pointer shiaepc3.erg.cuhk.edu.hk.
[43200] 219.94.189.137.in-addr.arpa domain name pointer shiaepc4.erg.cuhk.edu.hk.
[43200] 220.94.189.137.in-addr.arpa domain name pointer shiaepc5.erg.cuhk.edu.hk.
Host 221.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 222.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 223.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 224.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 225.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 226.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 227.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 228.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 229.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 230.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 231.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 232.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 233.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 234.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 235.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 236.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 237.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 238.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 239.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 240.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 241.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 242.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 243.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 244.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 245.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 246.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 247.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 248.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 249.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 250.94.189.137.in-addr.arpa domain name pointer router943.erg.cuhk.edu.hk.
Host 251.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 252.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
Host 253.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)
[43200] 254.94.189.137.in-addr.arpa domain name pointer eng-router94.erg.cuhk.edu.hk.
Host 255.94.189.137.in-addr.arpa not found: 3(NXDOMAIN)