[0] 0.151.47.216.in-addr.arpa.: domain name does not exist [0] 1.151.47.216.in-addr.arpa.: domain name does not exist [7200] 2.151.47.216.in-addr.arpa. domain name pointer gate.csrri.iit.edu [0] 3.151.47.216.in-addr.arpa.: domain name does not exist [0] 4.151.47.216.in-addr.arpa.: domain name does not exist [0] 5.151.47.216.in-addr.arpa.: domain name does not exist [0] 6.151.47.216.in-addr.arpa.: domain name does not exist [0] 7.151.47.216.in-addr.arpa.: domain name does not exist [0] 8.151.47.216.in-addr.arpa.: domain name does not exist [0] 9.151.47.216.in-addr.arpa.: domain name does not exist [0] 10.151.47.216.in-addr.arpa.: domain name does not exist [7200] 11.151.47.216.in-addr.arpa. domain name pointer dh011.csrri.iit.edu [7200] 12.151.47.216.in-addr.arpa. domain name pointer dh012.csrri.iit.edu [7200] 13.151.47.216.in-addr.arpa. domain name pointer snx2.biol.iit.edu [7200] 14.151.47.216.in-addr.arpa. domain name pointer dh014.csrri.iit.edu [7200] 15.151.47.216.in-addr.arpa. domain name pointer dh015.csrri.iit.edu [7200] 16.151.47.216.in-addr.arpa. domain name pointer dh016.csrri.iit.edu [7200] 17.151.47.216.in-addr.arpa. domain name pointer dh017.csrri.iit.edu [7200] 18.151.47.216.in-addr.arpa. domain name pointer dh018.csrri.iit.edu [7200] 19.151.47.216.in-addr.arpa. domain name pointer dh019.csrri.iit.edu [7200] 20.151.47.216.in-addr.arpa. domain name pointer dh020.csrri.iit.edu [7200] 21.151.47.216.in-addr.arpa. domain name pointer dh021.csrri.iit.edu [7200] 22.151.47.216.in-addr.arpa. domain name pointer dh022.csrri.iit.edu [7200] 23.151.47.216.in-addr.arpa. domain name pointer dh023.csrri.iit.edu [7200] 24.151.47.216.in-addr.arpa. domain name pointer dh024.csrri.iit.edu [7200] 25.151.47.216.in-addr.arpa. domain name pointer dh025.csrri.iit.edu [7200] 26.151.47.216.in-addr.arpa. domain name pointer dh026.csrri.iit.edu [7200] 27.151.47.216.in-addr.arpa. domain name pointer dh027.csrri.iit.edu [7200] 28.151.47.216.in-addr.arpa. domain name pointer dh028.csrri.iit.edu [7200] 29.151.47.216.in-addr.arpa. domain name pointer dh029.csrri.iit.edu [7200] 30.151.47.216.in-addr.arpa. domain name pointer dh030.csrri.iit.edu [7200] 31.151.47.216.in-addr.arpa. domain name pointer dh031.csrri.iit.edu [7200] 32.151.47.216.in-addr.arpa. domain name pointer dh032.csrri.iit.edu [7200] 33.151.47.216.in-addr.arpa. domain name pointer dh033.csrri.iit.edu [7200] 34.151.47.216.in-addr.arpa. domain name pointer dh034.csrri.iit.edu [7200] 35.151.47.216.in-addr.arpa. domain name pointer dh035.csrri.iit.edu [7200] 36.151.47.216.in-addr.arpa. domain name pointer dh036.csrri.iit.edu [7200] 37.151.47.216.in-addr.arpa. domain name pointer dh037.csrri.iit.edu [7200] 38.151.47.216.in-addr.arpa. domain name pointer dh038.csrri.iit.edu [7200] 39.151.47.216.in-addr.arpa. domain name pointer dh039.csrri.iit.edu [7200] 40.151.47.216.in-addr.arpa. domain name pointer host40.csrri.iit.edu [7200] 41.151.47.216.in-addr.arpa. domain name pointer dh041.csrri.iit.edu [7200] 42.151.47.216.in-addr.arpa. domain name pointer dh042.csrri.iit.edu [7200] 43.151.47.216.in-addr.arpa. domain name pointer dh043.csrri.iit.edu [7200] 44.151.47.216.in-addr.arpa. domain name pointer dh044.csrri.iit.edu [7200] 45.151.47.216.in-addr.arpa. domain name pointer dh045.csrri.iit.edu [7200] 46.151.47.216.in-addr.arpa. domain name pointer dh046.csrri.iit.edu [7200] 47.151.47.216.in-addr.arpa. domain name pointer dh047.csrri.iit.edu [7200] 48.151.47.216.in-addr.arpa. domain name pointer dh048.csrri.iit.edu [7200] 49.151.47.216.in-addr.arpa. domain name pointer dh049.csrri.iit.edu [7200] 50.151.47.216.in-addr.arpa. domain name pointer dh050.csrri.iit.edu [7200] 51.151.47.216.in-addr.arpa. domain name pointer dh051.csrri.iit.edu [7200] 52.151.47.216.in-addr.arpa. domain name pointer dh052.csrri.iit.edu [7200] 53.151.47.216.in-addr.arpa. domain name pointer dh053.csrri.iit.edu [7200] 54.151.47.216.in-addr.arpa. domain name pointer dh054.csrri.iit.edu [7200] 55.151.47.216.in-addr.arpa. domain name pointer dh055.csrri.iit.edu [7200] 56.151.47.216.in-addr.arpa. domain name pointer dh056.csrri.iit.edu [7200] 57.151.47.216.in-addr.arpa. domain name pointer dh057.csrri.iit.edu [7200] 58.151.47.216.in-addr.arpa. domain name pointer dh058.csrri.iit.edu [7200] 59.151.47.216.in-addr.arpa. domain name pointer hlsfs.phys.iit.edu [7200] 60.151.47.216.in-addr.arpa. domain name pointer host60.bcps.iit.edu [7200] 61.151.47.216.in-addr.arpa. domain name pointer host61.bcps.iit.edu [7200] 62.151.47.216.in-addr.arpa. domain name pointer G40.phys.iit.edu [7200] 63.151.47.216.in-addr.arpa. domain name pointer membrane.phys.iit.edu [7200] 64.151.47.216.in-addr.arpa. domain name pointer dh064.biol.iit.edu [7200] 65.151.47.216.in-addr.arpa. domain name pointer host65.csrri.iit.edu [7200] 66.151.47.216.in-addr.arpa. domain name pointer cantor.phys.iit.edu [7200] 67.151.47.216.in-addr.arpa. domain name pointer dh067.csrri.iit.edu [7200] 68.151.47.216.in-addr.arpa. domain name pointer dh068.csrri.iit.edu [7200] 69.151.47.216.in-addr.arpa. domain name pointer dh069.csrri.iit.edu [7200] 70.151.47.216.in-addr.arpa. domain name pointer dh070.csrri.iit.edu [7200] 71.151.47.216.in-addr.arpa. domain name pointer lab60av.biol.iit.edu [7200] 72.151.47.216.in-addr.arpa. domain name pointer geldoc.biol.iit.edu [7200] 73.151.47.216.in-addr.arpa. domain name pointer host073.csrri.iit.edu [7200] 74.151.47.216.in-addr.arpa. domain name pointer host74.bcps.iit.edu [7200] 75.151.47.216.in-addr.arpa. domain name pointer host75.bcps.iit.edu [7200] 76.151.47.216.in-addr.arpa. domain name pointer dh076.cssri.iit.edu [7200] 77.151.47.216.in-addr.arpa. domain name pointer dh077.cssri.iit.edu [7200] 78.151.47.216.in-addr.arpa. domain name pointer dh078.cssri.iit.edu [7200] 79.151.47.216.in-addr.arpa. domain name pointer dh079.cssri.iit.edu [7200] 80.151.47.216.in-addr.arpa. domain name pointer dh080.cssri.iit.edu [7200] 81.151.47.216.in-addr.arpa. domain name pointer dh081.cssri.iit.edu [7200] 82.151.47.216.in-addr.arpa. domain name pointer dh082.cssri.iit.edu [7200] 83.151.47.216.in-addr.arpa. domain name pointer dh083.cssri.iit.edu [7200] 84.151.47.216.in-addr.arpa. domain name pointer dh084.cssri.iit.edu [7200] 85.151.47.216.in-addr.arpa. domain name pointer dh085.cssri.iit.edu [7200] 86.151.47.216.in-addr.arpa. domain name pointer dh086.cssri.iit.edu [7200] 87.151.47.216.in-addr.arpa. domain name pointer dh087.cssri.iit.edu [7200] 88.151.47.216.in-addr.arpa. domain name pointer dh088.cssri.iit.edu [7200] 89.151.47.216.in-addr.arpa. domain name pointer dh089.cssri.iit.edu [7200] 90.151.47.216.in-addr.arpa. domain name pointer dh090.cssri.iit.edu [7200] 91.151.47.216.in-addr.arpa. domain name pointer dh091.cssri.iit.edu [7200] 92.151.47.216.in-addr.arpa. domain name pointer muscle.biol.iit.edu [7200] 93.151.47.216.in-addr.arpa. domain name pointer fiber.biol.iit.edu [7200] 94.151.47.216.in-addr.arpa. domain name pointer mag.biol.iit.edu [7200] 95.151.47.216.in-addr.arpa. domain name pointer bcf.biol.iit.edu [7200] 96.151.47.216.in-addr.arpa. domain name pointer bpf.biol.iit.edu [7200] 97.151.47.216.in-addr.arpa. domain name pointer dh097.cssri.iit.edu [7200] 98.151.47.216.in-addr.arpa. domain name pointer dh098.cssri.iit.edu [7200] 99.151.47.216.in-addr.arpa. domain name pointer dh099.cssri.iit.edu [7200] 100.151.47.216.in-addr.arpa. domain name pointer dh100.cssri.iit.edu [7200] 101.151.47.216.in-addr.arpa. domain name pointer dh101.csrri.iit.edu [7200] 102.151.47.216.in-addr.arpa. domain name pointer dh102.csrri.iit.edu [7200] 103.151.47.216.in-addr.arpa. domain name pointer dh103.csrri.iit.edu [7200] 104.151.47.216.in-addr.arpa. domain name pointer dh104.csrri.iit.edu [7200] 105.151.47.216.in-addr.arpa. domain name pointer dh105.csrri.iit.edu [7200] 106.151.47.216.in-addr.arpa. domain name pointer dh106.csrri.iit.edu [7200] 107.151.47.216.in-addr.arpa. domain name pointer dh107.csrri.iit.edu [7200] 108.151.47.216.in-addr.arpa. domain name pointer dh108.csrri.iit.edu [7200] 109.151.47.216.in-addr.arpa. domain name pointer dh109.csrri.iit.edu [7200] 110.151.47.216.in-addr.arpa. domain name pointer dh110.csrri.iit.edu [7200] 111.151.47.216.in-addr.arpa. domain name pointer dh111.csrri.iit.edu [7200] 112.151.47.216.in-addr.arpa. domain name pointer dh112.csrri.iit.edu [7200] 113.151.47.216.in-addr.arpa. domain name pointer dh113.csrri.iit.edu [7200] 114.151.47.216.in-addr.arpa. domain name pointer dh114.csrri.iit.edu [7200] 115.151.47.216.in-addr.arpa. domain name pointer dh115.csrri.iit.edu [7200] 116.151.47.216.in-addr.arpa. domain name pointer dh116.csrri.iit.edu [7200] 117.151.47.216.in-addr.arpa. domain name pointer dh117.csrri.iit.edu [7200] 118.151.47.216.in-addr.arpa. domain name pointer dh118.csrri.iit.edu [7200] 119.151.47.216.in-addr.arpa. domain name pointer dh119.csrri.iit.edu [7200] 120.151.47.216.in-addr.arpa. domain name pointer jslab0.chem.iit.edu [7200] 121.151.47.216.in-addr.arpa. domain name pointer dh121.csrri.iit.edu [7200] 122.151.47.216.in-addr.arpa. domain name pointer dh122.csrri.iit.edu [7200] 123.151.47.216.in-addr.arpa. domain name pointer dh123.csrri.iit.edu [7200] 124.151.47.216.in-addr.arpa. domain name pointer dh124.csrri.iit.edu [7200] 125.151.47.216.in-addr.arpa. domain name pointer dh125.csrri.iit.edu [7200] 126.151.47.216.in-addr.arpa. domain name pointer jslab6.chem.iit.edu [7200] 127.151.47.216.in-addr.arpa. domain name pointer jslab7.chem.iit.edu [7200] 128.151.47.216.in-addr.arpa. domain name pointer dh128.csrri.iit.edu [7200] 129.151.47.216.in-addr.arpa. domain name pointer dh129.csrri.iit.edu [7200] 130.151.47.216.in-addr.arpa. domain name pointer dh130.csrri.iit.edu [7200] 131.151.47.216.in-addr.arpa. domain name pointer monte.phys.iit.edu [7200] 132.151.47.216.in-addr.arpa. domain name pointer carlo.phys.iit.edu [7200] 133.151.47.216.in-addr.arpa. domain name pointer dh133.csrri.iit.edu [7200] 134.151.47.216.in-addr.arpa. domain name pointer dh134.csrri.iit.edu [7200] 135.151.47.216.in-addr.arpa. domain name pointer dh135.csrri.iit.edu [7200] 136.151.47.216.in-addr.arpa. domain name pointer dh136.csrri.iit.edu [7200] 137.151.47.216.in-addr.arpa. domain name pointer dh137.csrri.iit.edu [7200] 138.151.47.216.in-addr.arpa. domain name pointer dh138.csrri.iit.edu [7200] 139.151.47.216.in-addr.arpa. domain name pointer dh139.csrri.iit.edu [7200] 140.151.47.216.in-addr.arpa. domain name pointer dh140.csrri.iit.edu [7200] 141.151.47.216.in-addr.arpa. domain name pointer muscle2.biol.iit.edu [7200] 142.151.47.216.in-addr.arpa. domain name pointer dh142.csrri.iit.edu [7200] 143.151.47.216.in-addr.arpa. domain name pointer dh143.csrri.iit.edu [7200] 144.151.47.216.in-addr.arpa. domain name pointer dh144.csrri.iit.edu [7200] 145.151.47.216.in-addr.arpa. domain name pointer muscle6.biol.iit.edu [7200] 146.151.47.216.in-addr.arpa. domain name pointer dh146.csrri.iit.edu [7200] 147.151.47.216.in-addr.arpa. domain name pointer dh147.csrri.iit.edu [7200] 148.151.47.216.in-addr.arpa. domain name pointer dh148.csrri.iit.edu [7200] 149.151.47.216.in-addr.arpa. domain name pointer dh149.csrri.iit.edu [7200] 150.151.47.216.in-addr.arpa. domain name pointer dh150.csrri.iit.edu [7200] 151.151.47.216.in-addr.arpa. domain name pointer feynman.phys.iit.edu [7200] 152.151.47.216.in-addr.arpa. domain name pointer dh152.csrri.iit.edu [7200] 153.151.47.216.in-addr.arpa. domain name pointer dh153.csrri.iit.edu [7200] 154.151.47.216.in-addr.arpa. domain name pointer dh154.csrri.iit.edu [7200] 155.151.47.216.in-addr.arpa. domain name pointer star2.iit.edu [7200] 156.151.47.216.in-addr.arpa. domain name pointer dh156.csrri.iit.edu [7200] 157.151.47.216.in-addr.arpa. domain name pointer dh157.csrri.iit.edu [7200] 158.151.47.216.in-addr.arpa. domain name pointer dh158.csrri.iit.edu [7200] 159.151.47.216.in-addr.arpa. domain name pointer dh159.csrri.iit.edu [7200] 160.151.47.216.in-addr.arpa. domain name pointer dh160.csrri.iit.edu [7200] 161.151.47.216.in-addr.arpa. domain name pointer jslab8.chem.iit.edu [7200] 162.151.47.216.in-addr.arpa. domain name pointer dh162.csrri.iit.edu [7200] 163.151.47.216.in-addr.arpa. domain name pointer dh163.csrri.iit.edu [7200] 164.151.47.216.in-addr.arpa. domain name pointer dh164.csrri.iit.edu [7200] 165.151.47.216.in-addr.arpa. domain name pointer dh165.csrri.iit.edu [7200] 166.151.47.216.in-addr.arpa. domain name pointer dh166.csrri.iit.edu [7200] 167.151.47.216.in-addr.arpa. domain name pointer dh167.csrri.iit.edu [7200] 168.151.47.216.in-addr.arpa. domain name pointer dh168.csrri.iit.edu [7200] 169.151.47.216.in-addr.arpa. domain name pointer dh169.csrri.iit.edu [7200] 170.151.47.216.in-addr.arpa. domain name pointer dh170.csrri.iit.edu [7200] 171.151.47.216.in-addr.arpa. domain name pointer dh171.csrri.iit.edu [7200] 172.151.47.216.in-addr.arpa. domain name pointer dh172.csrri.iit.edu [7200] 173.151.47.216.in-addr.arpa. domain name pointer dh173.csrri.iit.edu [7200] 174.151.47.216.in-addr.arpa. domain name pointer snx.biol.iit.edu [7200] 175.151.47.216.in-addr.arpa. domain name pointer dh175.csrri.iit.edu [7200] 176.151.47.216.in-addr.arpa. domain name pointer dh176.csrri.iit.edu [7200] 177.151.47.216.in-addr.arpa. domain name pointer dh177.csrri.iit.edu [7200] 178.151.47.216.in-addr.arpa. domain name pointer dh178.csrri.iit.edu [7200] 179.151.47.216.in-addr.arpa. domain name pointer dh179.csrri.iit.edu [7200] 180.151.47.216.in-addr.arpa. domain name pointer dh180.csrri.iit.edu [7200] 181.151.47.216.in-addr.arpa. domain name pointer dh181.csrri.iit.edu [7200] 182.151.47.216.in-addr.arpa. domain name pointer dh182.csrri.iit.edu [7200] 183.151.47.216.in-addr.arpa. domain name pointer dh183.csrri.iit.edu [7200] 184.151.47.216.in-addr.arpa. domain name pointer dh184.csrri.iit.edu [7200] 185.151.47.216.in-addr.arpa. domain name pointer dh185.csrri.iit.edu [7200] 186.151.47.216.in-addr.arpa. domain name pointer dh186.csrri.iit.edu [7200] 187.151.47.216.in-addr.arpa. domain name pointer quantra.chem.iit.edu [7200] 188.151.47.216.in-addr.arpa. domain name pointer drosophila.biol.iit.edu [7200] 189.151.47.216.in-addr.arpa. domain name pointer nebular.iit.edu [7200] 190.151.47.216.in-addr.arpa. domain name pointer dh190.csrri.iit.edu [7200] 191.151.47.216.in-addr.arpa. domain name pointer dh191.csrri.iit.edu [7200] 192.151.47.216.in-addr.arpa. domain name pointer dh192.csrri.iit.edu [7200] 193.151.47.216.in-addr.arpa. domain name pointer dh193.csrri.iit.edu [7200] 194.151.47.216.in-addr.arpa. domain name pointer dh194.csrri.iit.edu [7200] 195.151.47.216.in-addr.arpa. domain name pointer dh195.csrri.iit.edu [7200] 196.151.47.216.in-addr.arpa. domain name pointer dh196.csrri.iit.edu [7200] 197.151.47.216.in-addr.arpa. domain name pointer dh197.csrri.iit.edu [7200] 198.151.47.216.in-addr.arpa. domain name pointer dh198.csrri.iit.edu [7200] 199.151.47.216.in-addr.arpa. domain name pointer dh199.csrri.iit.edu [7200] 200.151.47.216.in-addr.arpa. domain name pointer dh200.csrri.iit.edu [7200] 201.151.47.216.in-addr.arpa. domain name pointer dh201.csrri.iit.edu [7200] 202.151.47.216.in-addr.arpa. domain name pointer dh202.csrri.iit.edu [7200] 203.151.47.216.in-addr.arpa. domain name pointer dh203.csrri.iit.edu [7200] 204.151.47.216.in-addr.arpa. domain name pointer dh204.csrri.iit.edu [7200] 205.151.47.216.in-addr.arpa. domain name pointer dh205.csrri.iit.edu [7200] 206.151.47.216.in-addr.arpa. domain name pointer dh206.csrri.iit.edu [7200] 207.151.47.216.in-addr.arpa. domain name pointer dh207.csrri.iit.edu [7200] 208.151.47.216.in-addr.arpa. domain name pointer dh208.csrri.iit.edu [7200] 209.151.47.216.in-addr.arpa. domain name pointer dh209.csrri.iit.edu [7200] 210.151.47.216.in-addr.arpa. domain name pointer dh210.csrri.iit.edu [7200] 211.151.47.216.in-addr.arpa. domain name pointer dh211.csrri.iit.edu [7200] 212.151.47.216.in-addr.arpa. domain name pointer dh212.csrri.iit.edu [7200] 213.151.47.216.in-addr.arpa. domain name pointer dh213.csrri.iit.edu [7200] 214.151.47.216.in-addr.arpa. domain name pointer dh214.csrri.iit.edu [7200] 215.151.47.216.in-addr.arpa. domain name pointer dh215.csrri.iit.edu [7200] 216.151.47.216.in-addr.arpa. domain name pointer dh216.csrri.iit.edu [7200] 217.151.47.216.in-addr.arpa. domain name pointer dh217.csrri.iit.edu [7200] 218.151.47.216.in-addr.arpa. domain name pointer dh218.csrri.iit.edu [7200] 219.151.47.216.in-addr.arpa. domain name pointer dh219.csrri.iit.edu [7200] 220.151.47.216.in-addr.arpa. domain name pointer dh220.csrri.iit.edu [7200] 221.151.47.216.in-addr.arpa. domain name pointer dh221.csrri.iit.edu [7200] 222.151.47.216.in-addr.arpa. domain name pointer dh222.csrri.iit.edu [7200] 223.151.47.216.in-addr.arpa. domain name pointer dh223.csrri.iit.edu [7200] 224.151.47.216.in-addr.arpa. domain name pointer dh224.csrri.iit.edu [7200] 225.151.47.216.in-addr.arpa. domain name pointer dh225.csrri.iit.edu [7200] 226.151.47.216.in-addr.arpa. domain name pointer dh226.csrri.iit.edu [7200] 227.151.47.216.in-addr.arpa. domain name pointer dh227.csrri.iit.edu [7200] 228.151.47.216.in-addr.arpa. domain name pointer dh228.csrri.iit.edu [7200] 229.151.47.216.in-addr.arpa. domain name pointer dh229.csrri.iit.edu [7200] 230.151.47.216.in-addr.arpa. domain name pointer dh230.csrri.iit.edu [7200] 231.151.47.216.in-addr.arpa. domain name pointer dh231.csrri.iit.edu [7200] 232.151.47.216.in-addr.arpa. domain name pointer ursula.orgel.iit.edu [7200] 233.151.47.216.in-addr.arpa. domain name pointer dh233.csrri.iit.edu [7200] 234.151.47.216.in-addr.arpa. domain name pointer dh234.csrri.iit.edu [7200] 235.151.47.216.in-addr.arpa. domain name pointer dh235.csrri.iit.edu [7200] 236.151.47.216.in-addr.arpa. domain name pointer dh236.csrri.iit.edu [7200] 237.151.47.216.in-addr.arpa. domain name pointer dh237.csrri.iit.edu [7200] 238.151.47.216.in-addr.arpa. domain name pointer dh238.csrri.iit.edu [7200] 239.151.47.216.in-addr.arpa. domain name pointer star1.iit.edu [7200] 240.151.47.216.in-addr.arpa. domain name pointer dh240.csrri.iit.edu [7200] 241.151.47.216.in-addr.arpa. domain name pointer dh241.csrri.iit.edu [7200] 242.151.47.216.in-addr.arpa. domain name pointer dh242.csrri.iit.edu [7200] 243.151.47.216.in-addr.arpa. domain name pointer dh243.csrri.iit.edu [7200] 244.151.47.216.in-addr.arpa. domain name pointer dh244.csrri.iit.edu [7200] 245.151.47.216.in-addr.arpa. domain name pointer dh245.csrri.iit.edu [7200] 246.151.47.216.in-addr.arpa. domain name pointer dh246.csrri.iit.edu [7200] 247.151.47.216.in-addr.arpa. domain name pointer dh247.csrri.iit.edu [7200] 248.151.47.216.in-addr.arpa. domain name pointer dh248.csrri.iit.edu [7200] 249.151.47.216.in-addr.arpa. domain name pointer dh249.csrri.iit.edu [7200] 250.151.47.216.in-addr.arpa. domain name pointer dh250.csrri.iit.edu [7200] 251.151.47.216.in-addr.arpa. domain name pointer dh251.csrri.iit.edu [7200] 252.151.47.216.in-addr.arpa. domain name pointer dh252.csrri.iit.edu [7200] 253.151.47.216.in-addr.arpa. domain name pointer dh253.csrri.iit.edu [7200] 254.151.47.216.in-addr.arpa. domain name pointer dh254.csrri.iit.edu [0] 255.151.47.216.in-addr.arpa.: domain name does not exist