[0] 0.56.161.130.in-addr.arpa.: domain name does not exist [0] 1.56.161.130.in-addr.arpa.: domain name does not exist [604800] 2.56.161.130.in-addr.arpa. domain name pointer fttdserv.flatnet.tudelft.nl [604800] 3.56.161.130.in-addr.arpa. domain name pointer fttdreg.flatnet.tudelft.nl [0] 4.56.161.130.in-addr.arpa.: domain name does not exist [0] 5.56.161.130.in-addr.arpa.: domain name does not exist [0] 6.56.161.130.in-addr.arpa.: domain name does not exist [0] 7.56.161.130.in-addr.arpa.: domain name does not exist [0] 8.56.161.130.in-addr.arpa.: domain name does not exist [0] 9.56.161.130.in-addr.arpa.: domain name does not exist [0] 10.56.161.130.in-addr.arpa.: domain name does not exist [0] 11.56.161.130.in-addr.arpa.: domain name does not exist [0] 12.56.161.130.in-addr.arpa.: domain name does not exist [0] 13.56.161.130.in-addr.arpa.: domain name does not exist [0] 14.56.161.130.in-addr.arpa.: domain name does not exist [0] 15.56.161.130.in-addr.arpa.: domain name does not exist [604800] 16.56.161.130.in-addr.arpa. domain name pointer tienstra1.flatnet.tudelft.nl [604800] 17.56.161.130.in-addr.arpa. domain name pointer tienstra2.flatnet.tudelft.nl [604800] 18.56.161.130.in-addr.arpa. domain name pointer tienstra3.flatnet.tudelft.nl [604800] 19.56.161.130.in-addr.arpa. domain name pointer tienstra4.flatnet.tudelft.nl [604800] 20.56.161.130.in-addr.arpa. domain name pointer webmail.flatnet.tudelft.nl [604800] 21.56.161.130.in-addr.arpa. domain name pointer remotica.flatnet.tudelft.nl [0] 22.56.161.130.in-addr.arpa.: domain name does not exist [0] 23.56.161.130.in-addr.arpa.: domain name does not exist [0] 24.56.161.130.in-addr.arpa.: domain name does not exist [0] 25.56.161.130.in-addr.arpa.: domain name does not exist [0] 26.56.161.130.in-addr.arpa.: domain name does not exist [0] 27.56.161.130.in-addr.arpa.: domain name does not exist [0] 28.56.161.130.in-addr.arpa.: domain name does not exist [604800] 29.56.161.130.in-addr.arpa. domain name pointer ftp2.flatnet.tudelft.nl [0] 30.56.161.130.in-addr.arpa.: domain name does not exist [0] 31.56.161.130.in-addr.arpa.: domain name does not exist [0] 32.56.161.130.in-addr.arpa.: domain name does not exist [0] 33.56.161.130.in-addr.arpa.: domain name does not exist [0] 34.56.161.130.in-addr.arpa.: domain name does not exist [604800] 35.56.161.130.in-addr.arpa. domain name pointer liza.flatnet.tudelft.nl [0] 36.56.161.130.in-addr.arpa.: domain name does not exist [0] 37.56.161.130.in-addr.arpa.: domain name does not exist [0] 38.56.161.130.in-addr.arpa.: domain name does not exist [0] 39.56.161.130.in-addr.arpa.: domain name does not exist [0] 40.56.161.130.in-addr.arpa.: domain name does not exist [0] 41.56.161.130.in-addr.arpa.: domain name does not exist [0] 42.56.161.130.in-addr.arpa.: domain name does not exist [0] 43.56.161.130.in-addr.arpa.: domain name does not exist [0] 44.56.161.130.in-addr.arpa.: domain name does not exist [0] 45.56.161.130.in-addr.arpa.: domain name does not exist [0] 46.56.161.130.in-addr.arpa.: domain name does not exist [0] 47.56.161.130.in-addr.arpa.: domain name does not exist [0] 48.56.161.130.in-addr.arpa.: domain name does not exist [0] 49.56.161.130.in-addr.arpa.: domain name does not exist [0] 50.56.161.130.in-addr.arpa.: domain name does not exist [0] 51.56.161.130.in-addr.arpa.: domain name does not exist [0] 52.56.161.130.in-addr.arpa.: domain name does not exist [0] 53.56.161.130.in-addr.arpa.: domain name does not exist [0] 54.56.161.130.in-addr.arpa.: domain name does not exist [0] 55.56.161.130.in-addr.arpa.: domain name does not exist [0] 56.56.161.130.in-addr.arpa.: domain name does not exist [0] 57.56.161.130.in-addr.arpa.: domain name does not exist [0] 58.56.161.130.in-addr.arpa.: domain name does not exist [0] 59.56.161.130.in-addr.arpa.: domain name does not exist [0] 60.56.161.130.in-addr.arpa.: domain name does not exist [0] 61.56.161.130.in-addr.arpa.: domain name does not exist [0] 62.56.161.130.in-addr.arpa.: domain name does not exist [0] 63.56.161.130.in-addr.arpa.: domain name does not exist [0] 64.56.161.130.in-addr.arpa.: domain name does not exist [0] 65.56.161.130.in-addr.arpa.: domain name does not exist [0] 66.56.161.130.in-addr.arpa.: domain name does not exist [0] 67.56.161.130.in-addr.arpa.: domain name does not exist [0] 68.56.161.130.in-addr.arpa.: domain name does not exist [0] 69.56.161.130.in-addr.arpa.: domain name does not exist [0] 70.56.161.130.in-addr.arpa.: domain name does not exist [0] 71.56.161.130.in-addr.arpa.: domain name does not exist [0] 72.56.161.130.in-addr.arpa.: domain name does not exist [0] 73.56.161.130.in-addr.arpa.: domain name does not exist [0] 74.56.161.130.in-addr.arpa.: domain name does not exist [0] 75.56.161.130.in-addr.arpa.: domain name does not exist [0] 76.56.161.130.in-addr.arpa.: domain name does not exist [0] 77.56.161.130.in-addr.arpa.: domain name does not exist [0] 78.56.161.130.in-addr.arpa.: domain name does not exist [0] 79.56.161.130.in-addr.arpa.: domain name does not exist [0] 80.56.161.130.in-addr.arpa.: domain name does not exist [0] 81.56.161.130.in-addr.arpa.: domain name does not exist [0] 82.56.161.130.in-addr.arpa.: domain name does not exist [0] 83.56.161.130.in-addr.arpa.: domain name does not exist [0] 84.56.161.130.in-addr.arpa.: domain name does not exist [0] 85.56.161.130.in-addr.arpa.: domain name does not exist [0] 86.56.161.130.in-addr.arpa.: domain name does not exist [0] 87.56.161.130.in-addr.arpa.: domain name does not exist [0] 88.56.161.130.in-addr.arpa.: domain name does not exist [0] 89.56.161.130.in-addr.arpa.: domain name does not exist [0] 90.56.161.130.in-addr.arpa.: domain name does not exist [0] 91.56.161.130.in-addr.arpa.: domain name does not exist [604800] 92.56.161.130.in-addr.arpa. domain name pointer dhcp92.flatnet.tudelft.nl [604800] 93.56.161.130.in-addr.arpa. domain name pointer dhcp93.flatnet.tudelft.nl [604800] 94.56.161.130.in-addr.arpa. domain name pointer dhcp94.flatnet.tudelft.nl [604800] 95.56.161.130.in-addr.arpa. domain name pointer dhcp95.flatnet.tudelft.nl [604800] 96.56.161.130.in-addr.arpa. domain name pointer dhcp96.flatnet.tudelft.nl [604800] 97.56.161.130.in-addr.arpa. domain name pointer dhcp97.flatnet.tudelft.nl [604800] 98.56.161.130.in-addr.arpa. domain name pointer dhcp98.flatnet.tudelft.nl [604800] 99.56.161.130.in-addr.arpa. domain name pointer dhcp99.flatnet.tudelft.nl [604800] 100.56.161.130.in-addr.arpa. domain name pointer dhcp100.flatnet.tudelft.nl [604800] 101.56.161.130.in-addr.arpa. domain name pointer dhcp101.flatnet.tudelft.nl [604800] 102.56.161.130.in-addr.arpa. domain name pointer dhcp102.flatnet.tudelft.nl [604800] 103.56.161.130.in-addr.arpa. domain name pointer dhcp103.flatnet.tudelft.nl [604800] 104.56.161.130.in-addr.arpa. domain name pointer dhcp104.flatnet.tudelft.nl [604800] 105.56.161.130.in-addr.arpa. domain name pointer dhcp105.flatnet.tudelft.nl [604800] 106.56.161.130.in-addr.arpa. domain name pointer dhcp106.flatnet.tudelft.nl [604800] 107.56.161.130.in-addr.arpa. domain name pointer dhcp107.flatnet.tudelft.nl [604800] 108.56.161.130.in-addr.arpa. domain name pointer dhcp108.flatnet.tudelft.nl [604800] 109.56.161.130.in-addr.arpa. domain name pointer dhcp109.flatnet.tudelft.nl [604800] 110.56.161.130.in-addr.arpa. domain name pointer dhcp110.flatnet.tudelft.nl [604800] 111.56.161.130.in-addr.arpa. domain name pointer dhcp111.flatnet.tudelft.nl [604800] 112.56.161.130.in-addr.arpa. domain name pointer dhcp112.flatnet.tudelft.nl [604800] 113.56.161.130.in-addr.arpa. domain name pointer dhcp113.flatnet.tudelft.nl [604800] 114.56.161.130.in-addr.arpa. domain name pointer dhcp114.flatnet.tudelft.nl [604800] 115.56.161.130.in-addr.arpa. domain name pointer dhcp115.flatnet.tudelft.nl [604800] 116.56.161.130.in-addr.arpa. domain name pointer dhcp116.flatnet.tudelft.nl [604800] 117.56.161.130.in-addr.arpa. domain name pointer dhcp117.flatnet.tudelft.nl [604800] 118.56.161.130.in-addr.arpa. domain name pointer dhcp118.flatnet.tudelft.nl [604800] 119.56.161.130.in-addr.arpa. domain name pointer dhcp119.flatnet.tudelft.nl [604800] 120.56.161.130.in-addr.arpa. domain name pointer dhcp120.flatnet.tudelft.nl [604800] 121.56.161.130.in-addr.arpa. domain name pointer dhcp121.flatnet.tudelft.nl [604800] 122.56.161.130.in-addr.arpa. domain name pointer dhcp122.flatnet.tudelft.nl [604800] 123.56.161.130.in-addr.arpa. domain name pointer dhcp123.flatnet.tudelft.nl [604800] 124.56.161.130.in-addr.arpa. domain name pointer dhcp124.flatnet.tudelft.nl [604800] 125.56.161.130.in-addr.arpa. domain name pointer dhcp125.flatnet.tudelft.nl [604800] 126.56.161.130.in-addr.arpa. domain name pointer dhcp126.flatnet.tudelft.nl [604800] 127.56.161.130.in-addr.arpa. domain name pointer dhcp127.flatnet.tudelft.nl [604800] 128.56.161.130.in-addr.arpa. domain name pointer dhcp128.flatnet.tudelft.nl [604800] 129.56.161.130.in-addr.arpa. domain name pointer dhcp129.flatnet.tudelft.nl [604800] 130.56.161.130.in-addr.arpa. domain name pointer dhcp130.flatnet.tudelft.nl [604800] 131.56.161.130.in-addr.arpa. domain name pointer dhcp131.flatnet.tudelft.nl [604800] 132.56.161.130.in-addr.arpa. domain name pointer dhcp132.flatnet.tudelft.nl [604800] 133.56.161.130.in-addr.arpa. domain name pointer dhcp133.flatnet.tudelft.nl [604800] 134.56.161.130.in-addr.arpa. domain name pointer dhcp134.flatnet.tudelft.nl [604800] 135.56.161.130.in-addr.arpa. domain name pointer dhcp135.flatnet.tudelft.nl [604800] 136.56.161.130.in-addr.arpa. domain name pointer dhcp136.flatnet.tudelft.nl [604800] 137.56.161.130.in-addr.arpa. domain name pointer dhcp137.flatnet.tudelft.nl [604800] 138.56.161.130.in-addr.arpa. domain name pointer dhcp138.flatnet.tudelft.nl [604800] 139.56.161.130.in-addr.arpa. domain name pointer dhcp139.flatnet.tudelft.nl [604800] 140.56.161.130.in-addr.arpa. domain name pointer dhcp140.flatnet.tudelft.nl [604800] 141.56.161.130.in-addr.arpa. domain name pointer dhcp141.flatnet.tudelft.nl [604800] 142.56.161.130.in-addr.arpa. domain name pointer souterrain.flatnet.tudelft.nl [604800] 143.56.161.130.in-addr.arpa. domain name pointer dhcp143.flatnet.tudelft.nl [604800] 144.56.161.130.in-addr.arpa. domain name pointer dhcp144.flatnet.tudelft.nl [604800] 145.56.161.130.in-addr.arpa. domain name pointer dhcp145.flatnet.tudelft.nl [604800] 146.56.161.130.in-addr.arpa. domain name pointer dhcp146.flatnet.tudelft.nl [604800] 147.56.161.130.in-addr.arpa. domain name pointer dhcp147.flatnet.tudelft.nl [604800] 148.56.161.130.in-addr.arpa. domain name pointer dhcp148.flatnet.tudelft.nl [604800] 149.56.161.130.in-addr.arpa. domain name pointer dhcp149.flatnet.tudelft.nl [604800] 150.56.161.130.in-addr.arpa. domain name pointer dhcp150.flatnet.tudelft.nl [604800] 151.56.161.130.in-addr.arpa. domain name pointer dhcp151.flatnet.tudelft.nl [604800] 152.56.161.130.in-addr.arpa. domain name pointer dhcp152.flatnet.tudelft.nl [604800] 153.56.161.130.in-addr.arpa. domain name pointer dhcp153.flatnet.tudelft.nl [604800] 154.56.161.130.in-addr.arpa. domain name pointer dhcp154.flatnet.tudelft.nl [604800] 155.56.161.130.in-addr.arpa. domain name pointer dhcp155.flatnet.tudelft.nl [604800] 156.56.161.130.in-addr.arpa. domain name pointer dhcp156.flatnet.tudelft.nl [604800] 157.56.161.130.in-addr.arpa. domain name pointer dhcp157.flatnet.tudelft.nl [604800] 158.56.161.130.in-addr.arpa. domain name pointer dhcp158.flatnet.tudelft.nl [604800] 159.56.161.130.in-addr.arpa. domain name pointer dhcp159.flatnet.tudelft.nl [604800] 160.56.161.130.in-addr.arpa. domain name pointer dhcp160.flatnet.tudelft.nl [604800] 161.56.161.130.in-addr.arpa. domain name pointer dhcp161.flatnet.tudelft.nl [604800] 162.56.161.130.in-addr.arpa. domain name pointer dhcp162.flatnet.tudelft.nl [604800] 163.56.161.130.in-addr.arpa. domain name pointer dhcp163.flatnet.tudelft.nl [604800] 164.56.161.130.in-addr.arpa. domain name pointer dhcp164.flatnet.tudelft.nl [604800] 165.56.161.130.in-addr.arpa. domain name pointer dhcp165.flatnet.tudelft.nl [604800] 166.56.161.130.in-addr.arpa. domain name pointer dhcp166.flatnet.tudelft.nl [604800] 167.56.161.130.in-addr.arpa. domain name pointer dhcp167.flatnet.tudelft.nl [604800] 168.56.161.130.in-addr.arpa. domain name pointer dhcp168.flatnet.tudelft.nl [604800] 169.56.161.130.in-addr.arpa. domain name pointer dhcp169.flatnet.tudelft.nl [604800] 170.56.161.130.in-addr.arpa. domain name pointer dhcp170.flatnet.tudelft.nl [604800] 171.56.161.130.in-addr.arpa. domain name pointer dhcp171.flatnet.tudelft.nl [604800] 172.56.161.130.in-addr.arpa. domain name pointer dhcp172.flatnet.tudelft.nl [604800] 173.56.161.130.in-addr.arpa. domain name pointer dhcp173.flatnet.tudelft.nl [604800] 174.56.161.130.in-addr.arpa. domain name pointer dhcp174.flatnet.tudelft.nl [604800] 175.56.161.130.in-addr.arpa. domain name pointer dhcp175.flatnet.tudelft.nl [604800] 176.56.161.130.in-addr.arpa. domain name pointer dhcp176.flatnet.tudelft.nl [604800] 177.56.161.130.in-addr.arpa. domain name pointer dhcp177.flatnet.tudelft.nl [604800] 178.56.161.130.in-addr.arpa. domain name pointer dhcp178.flatnet.tudelft.nl [604800] 179.56.161.130.in-addr.arpa. domain name pointer dhcp179.flatnet.tudelft.nl [604800] 180.56.161.130.in-addr.arpa. domain name pointer dhcp180.flatnet.tudelft.nl [604800] 181.56.161.130.in-addr.arpa. domain name pointer dhcp181.flatnet.tudelft.nl [604800] 182.56.161.130.in-addr.arpa. domain name pointer dhcp182.flatnet.tudelft.nl [604800] 183.56.161.130.in-addr.arpa. domain name pointer dhcp183.flatnet.tudelft.nl [604800] 184.56.161.130.in-addr.arpa. domain name pointer dhcp184.flatnet.tudelft.nl [604800] 185.56.161.130.in-addr.arpa. domain name pointer dhcp185.flatnet.tudelft.nl [604800] 186.56.161.130.in-addr.arpa. domain name pointer dhcp186.flatnet.tudelft.nl [604800] 187.56.161.130.in-addr.arpa. domain name pointer dhcp187.flatnet.tudelft.nl [604800] 188.56.161.130.in-addr.arpa. domain name pointer dhcp188.flatnet.tudelft.nl [604800] 189.56.161.130.in-addr.arpa. domain name pointer dhcp189.flatnet.tudelft.nl [604800] 190.56.161.130.in-addr.arpa. domain name pointer dhcp190.flatnet.tudelft.nl [604800] 191.56.161.130.in-addr.arpa. domain name pointer dhcp191.flatnet.tudelft.nl [604800] 192.56.161.130.in-addr.arpa. domain name pointer dhcp192.flatnet.tudelft.nl [604800] 193.56.161.130.in-addr.arpa. domain name pointer dhcp193.flatnet.tudelft.nl [604800] 194.56.161.130.in-addr.arpa. domain name pointer dhcp194.flatnet.tudelft.nl [604800] 195.56.161.130.in-addr.arpa. domain name pointer dhcp195.flatnet.tudelft.nl [604800] 196.56.161.130.in-addr.arpa. domain name pointer dhcp196.flatnet.tudelft.nl [604800] 197.56.161.130.in-addr.arpa. domain name pointer dhcp197.flatnet.tudelft.nl [604800] 198.56.161.130.in-addr.arpa. domain name pointer dhcp198.flatnet.tudelft.nl [604800] 199.56.161.130.in-addr.arpa. domain name pointer dhcp199.flatnet.tudelft.nl [604800] 200.56.161.130.in-addr.arpa. domain name pointer dhcp200.flatnet.tudelft.nl [604800] 201.56.161.130.in-addr.arpa. domain name pointer dhcp201.flatnet.tudelft.nl [604800] 202.56.161.130.in-addr.arpa. domain name pointer dhcp202.flatnet.tudelft.nl [604800] 203.56.161.130.in-addr.arpa. domain name pointer dhcp203.flatnet.tudelft.nl [604800] 204.56.161.130.in-addr.arpa. domain name pointer dhcp204.flatnet.tudelft.nl [604800] 205.56.161.130.in-addr.arpa. domain name pointer dhcp205.flatnet.tudelft.nl [604800] 206.56.161.130.in-addr.arpa. domain name pointer dhcp206.flatnet.tudelft.nl [604800] 207.56.161.130.in-addr.arpa. domain name pointer dhcp207.flatnet.tudelft.nl [604800] 208.56.161.130.in-addr.arpa. domain name pointer dhcp208.flatnet.tudelft.nl [604800] 209.56.161.130.in-addr.arpa. domain name pointer dhcp209.flatnet.tudelft.nl [604800] 210.56.161.130.in-addr.arpa. domain name pointer dhcp210.flatnet.tudelft.nl [604800] 211.56.161.130.in-addr.arpa. domain name pointer dhcp211.flatnet.tudelft.nl [604800] 212.56.161.130.in-addr.arpa. domain name pointer dhcp212.flatnet.tudelft.nl [604800] 213.56.161.130.in-addr.arpa. domain name pointer dhcp213.flatnet.tudelft.nl [604800] 214.56.161.130.in-addr.arpa. domain name pointer dhcp214.flatnet.tudelft.nl [604800] 215.56.161.130.in-addr.arpa. domain name pointer dhcp215.flatnet.tudelft.nl [604800] 216.56.161.130.in-addr.arpa. domain name pointer dhcp216.flatnet.tudelft.nl [604800] 217.56.161.130.in-addr.arpa. domain name pointer dhcp217.flatnet.tudelft.nl [604800] 218.56.161.130.in-addr.arpa. domain name pointer dhcp218.flatnet.tudelft.nl [604800] 219.56.161.130.in-addr.arpa. domain name pointer dhcp219.flatnet.tudelft.nl [604800] 220.56.161.130.in-addr.arpa. domain name pointer dhcp220.flatnet.tudelft.nl [604800] 221.56.161.130.in-addr.arpa. domain name pointer dhcp221.flatnet.tudelft.nl [604800] 222.56.161.130.in-addr.arpa. domain name pointer dhcp222.flatnet.tudelft.nl [604800] 223.56.161.130.in-addr.arpa. domain name pointer dhcp223.flatnet.tudelft.nl [604800] 224.56.161.130.in-addr.arpa. domain name pointer dhcp224.flatnet.tudelft.nl [604800] 225.56.161.130.in-addr.arpa. domain name pointer dhcp225.flatnet.tudelft.nl [604800] 226.56.161.130.in-addr.arpa. domain name pointer dhcp226.flatnet.tudelft.nl [604800] 227.56.161.130.in-addr.arpa. domain name pointer dhcp227.flatnet.tudelft.nl [604800] 228.56.161.130.in-addr.arpa. domain name pointer dhcp228.flatnet.tudelft.nl [604800] 229.56.161.130.in-addr.arpa. domain name pointer dhcp229.flatnet.tudelft.nl [604800] 230.56.161.130.in-addr.arpa. domain name pointer dhcp230.flatnet.tudelft.nl [604800] 231.56.161.130.in-addr.arpa. domain name pointer dhcp231.flatnet.tudelft.nl [604800] 232.56.161.130.in-addr.arpa. domain name pointer dhcp232.flatnet.tudelft.nl [604800] 233.56.161.130.in-addr.arpa. domain name pointer dhcp233.flatnet.tudelft.nl [604800] 234.56.161.130.in-addr.arpa. domain name pointer dhcp234.flatnet.tudelft.nl [604800] 235.56.161.130.in-addr.arpa. domain name pointer dhcp235.flatnet.tudelft.nl [604800] 236.56.161.130.in-addr.arpa. domain name pointer dhcp236.flatnet.tudelft.nl [604800] 237.56.161.130.in-addr.arpa. domain name pointer dhcp237.flatnet.tudelft.nl [604800] 238.56.161.130.in-addr.arpa. domain name pointer dhcp238.flatnet.tudelft.nl [604800] 239.56.161.130.in-addr.arpa. domain name pointer dhcp239.flatnet.tudelft.nl [604800] 240.56.161.130.in-addr.arpa. domain name pointer dhcp240.flatnet.tudelft.nl [604800] 241.56.161.130.in-addr.arpa. domain name pointer dhcp241.flatnet.tudelft.nl [604800] 242.56.161.130.in-addr.arpa. domain name pointer dhcp242.flatnet.tudelft.nl [604800] 243.56.161.130.in-addr.arpa. domain name pointer dhcp243.flatnet.tudelft.nl [604800] 244.56.161.130.in-addr.arpa. domain name pointer dhcp244.flatnet.tudelft.nl [604800] 245.56.161.130.in-addr.arpa. domain name pointer dhcp245.flatnet.tudelft.nl [604800] 246.56.161.130.in-addr.arpa. domain name pointer dhcp246.flatnet.tudelft.nl [604800] 247.56.161.130.in-addr.arpa. domain name pointer dhcp247.flatnet.tudelft.nl [604800] 248.56.161.130.in-addr.arpa. domain name pointer dhcp248.flatnet.tudelft.nl [604800] 249.56.161.130.in-addr.arpa. domain name pointer dhcp249.flatnet.tudelft.nl [604800] 250.56.161.130.in-addr.arpa. domain name pointer dhcp250.flatnet.tudelft.nl [604800] 251.56.161.130.in-addr.arpa. domain name pointer dhcp251.flatnet.tudelft.nl [604800] 252.56.161.130.in-addr.arpa. domain name pointer dhcp252.flatnet.tudelft.nl [604800] 253.56.161.130.in-addr.arpa. domain name pointer dhcp253.flatnet.tudelft.nl [604800] 254.56.161.130.in-addr.arpa. domain name pointer dhcp254.flatnet.tudelft.nl [0] 255.56.161.130.in-addr.arpa.: domain name does not exist