[0] 0.120.189.18.in-addr.arpa.: domain name does not exist
[0] 1.120.189.18.in-addr.arpa.: domain name does not exist
[0] 2.120.189.18.in-addr.arpa.: domain name does not exist
[0] 3.120.189.18.in-addr.arpa.: domain name does not exist
[0] 4.120.189.18.in-addr.arpa.: domain name does not exist
[60] 5.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-5.dyn.MIT.EDU
[60] 6.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-6.dyn.MIT.EDU
[0] 7.120.189.18.in-addr.arpa.: domain name does not exist
[0] 8.120.189.18.in-addr.arpa.: domain name does not exist
[0] 9.120.189.18.in-addr.arpa.: domain name does not exist
[60] 10.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-10.dyn.MIT.EDU
[60] 11.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-11.dyn.MIT.EDU
[60] 12.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-12.dyn.MIT.EDU
[60] 13.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-13.dyn.MIT.EDU
[60] 14.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-14.dyn.MIT.EDU
[60] 15.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-15.dyn.MIT.EDU
[0] 16.120.189.18.in-addr.arpa.: domain name does not exist
[0] 17.120.189.18.in-addr.arpa.: domain name does not exist
[60] 18.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-18.dyn.MIT.EDU
[60] 19.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-19.dyn.MIT.EDU
[0] 20.120.189.18.in-addr.arpa.: domain name does not exist
[0] 21.120.189.18.in-addr.arpa.: domain name does not exist
[60] 22.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-22.dyn.MIT.EDU
[0] 23.120.189.18.in-addr.arpa.: domain name does not exist
[60] 24.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-24.dyn.MIT.EDU
[0] 25.120.189.18.in-addr.arpa.: domain name does not exist
[60] 26.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-26.dyn.MIT.EDU
[60] 27.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-27.dyn.MIT.EDU
[0] 28.120.189.18.in-addr.arpa.: domain name does not exist
[60] 29.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-29.dyn.MIT.EDU
[60] 30.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-30.dyn.MIT.EDU
[60] 31.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-31.dyn.MIT.EDU
[0] 32.120.189.18.in-addr.arpa.: domain name does not exist
[60] 33.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-33.dyn.MIT.EDU
[0] 34.120.189.18.in-addr.arpa.: domain name does not exist
[60] 35.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-35.dyn.MIT.EDU
[0] 36.120.189.18.in-addr.arpa.: domain name does not exist
[60] 37.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-37.dyn.MIT.EDU
[0] 38.120.189.18.in-addr.arpa.: domain name does not exist
[0] 39.120.189.18.in-addr.arpa.: domain name does not exist
[0] 40.120.189.18.in-addr.arpa.: domain name does not exist
[60] 41.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-41.dyn.MIT.EDU
[60] 42.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-42.dyn.MIT.EDU
[60] 43.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-43.dyn.MIT.EDU
[60] 44.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-44.dyn.MIT.EDU
[60] 45.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-45.dyn.MIT.EDU
[0] 46.120.189.18.in-addr.arpa.: domain name does not exist
[60] 47.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-47.dyn.MIT.EDU
[0] 48.120.189.18.in-addr.arpa.: domain name does not exist
[60] 49.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-49.dyn.MIT.EDU
[60] 50.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-50.dyn.MIT.EDU
[0] 51.120.189.18.in-addr.arpa.: domain name does not exist
[0] 52.120.189.18.in-addr.arpa.: domain name does not exist
[60] 53.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-53.dyn.MIT.EDU
[60] 54.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-54.dyn.MIT.EDU
[60] 55.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-55.dyn.MIT.EDU
[0] 56.120.189.18.in-addr.arpa.: domain name does not exist
[60] 57.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-57.dyn.MIT.EDU
[0] 58.120.189.18.in-addr.arpa.: domain name does not exist
[60] 59.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-59.dyn.MIT.EDU
[0] 60.120.189.18.in-addr.arpa.: domain name does not exist
[60] 61.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-61.dyn.MIT.EDU
[60] 62.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-62.dyn.MIT.EDU
[60] 63.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-63.dyn.MIT.EDU
[60] 64.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-64.dyn.MIT.EDU
[60] 65.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-65.dyn.MIT.EDU
[60] 66.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-66.dyn.MIT.EDU
[0] 67.120.189.18.in-addr.arpa.: domain name does not exist
[60] 68.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-68.dyn.MIT.EDU
[60] 69.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-69.dyn.MIT.EDU
[60] 70.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-70.dyn.MIT.EDU
[0] 71.120.189.18.in-addr.arpa.: domain name does not exist
[60] 72.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-72.dyn.MIT.EDU
[0] 73.120.189.18.in-addr.arpa.: domain name does not exist
[60] 74.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-74.dyn.MIT.EDU
[0] 75.120.189.18.in-addr.arpa.: domain name does not exist
[60] 76.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-76.dyn.MIT.EDU
[0] 77.120.189.18.in-addr.arpa.: domain name does not exist
[60] 78.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-78.dyn.MIT.EDU
[60] 79.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-79.dyn.MIT.EDU
[60] 80.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-80.dyn.MIT.EDU
[60] 81.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-81.dyn.MIT.EDU
[0] 82.120.189.18.in-addr.arpa.: domain name does not exist
[60] 83.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-83.dyn.MIT.EDU
[0] 84.120.189.18.in-addr.arpa.: domain name does not exist
[60] 85.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-85.dyn.MIT.EDU
[0] 86.120.189.18.in-addr.arpa.: domain name does not exist
[0] 87.120.189.18.in-addr.arpa.: domain name does not exist
[60] 88.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-88.dyn.MIT.EDU
[0] 89.120.189.18.in-addr.arpa.: domain name does not exist
[0] 90.120.189.18.in-addr.arpa.: domain name does not exist
[60] 91.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-91.dyn.MIT.EDU
[0] 92.120.189.18.in-addr.arpa.: domain name does not exist
[60] 93.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-93.dyn.MIT.EDU
[0] 94.120.189.18.in-addr.arpa.: domain name does not exist
[0] 95.120.189.18.in-addr.arpa.: domain name does not exist
[60] 96.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-96.dyn.MIT.EDU
[0] 97.120.189.18.in-addr.arpa.: domain name does not exist
[60] 98.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-98.dyn.MIT.EDU
[60] 99.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-99.dyn.MIT.EDU
[60] 100.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-100.dyn.MIT.EDU
[60] 101.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-101.dyn.MIT.EDU
[0] 102.120.189.18.in-addr.arpa.: domain name does not exist
[0] 103.120.189.18.in-addr.arpa.: domain name does not exist
[60] 104.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-104.dyn.MIT.EDU
[0] 105.120.189.18.in-addr.arpa.: domain name does not exist
[0] 106.120.189.18.in-addr.arpa.: domain name does not exist
[60] 107.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-107.dyn.MIT.EDU
[0] 108.120.189.18.in-addr.arpa.: domain name does not exist
[60] 109.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-109.dyn.MIT.EDU
[0] 110.120.189.18.in-addr.arpa.: domain name does not exist
[60] 111.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-111.dyn.MIT.EDU
[0] 112.120.189.18.in-addr.arpa.: domain name does not exist
[60] 113.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-113.dyn.MIT.EDU
[60] 114.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-114.dyn.MIT.EDU
[0] 115.120.189.18.in-addr.arpa.: domain name does not exist
[0] 116.120.189.18.in-addr.arpa.: domain name does not exist
[60] 117.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-117.dyn.MIT.EDU
[0] 118.120.189.18.in-addr.arpa.: domain name does not exist
[60] 119.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-119.dyn.MIT.EDU
[60] 120.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-120.dyn.MIT.EDU
[0] 121.120.189.18.in-addr.arpa.: domain name does not exist
[60] 122.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-122.dyn.MIT.EDU
[0] 123.120.189.18.in-addr.arpa.: domain name does not exist
[0] 124.120.189.18.in-addr.arpa.: domain name does not exist
[60] 125.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-125.dyn.MIT.EDU
[60] 126.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-126.dyn.MIT.EDU
[0] 127.120.189.18.in-addr.arpa.: domain name does not exist
[60] 128.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-128.dyn.MIT.EDU
[0] 129.120.189.18.in-addr.arpa.: domain name does not exist
[0] 130.120.189.18.in-addr.arpa.: domain name does not exist
[60] 131.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-131.dyn.MIT.EDU
[60] 132.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-132.dyn.MIT.EDU
[60] 133.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-133.dyn.MIT.EDU
[0] 134.120.189.18.in-addr.arpa.: domain name does not exist
[60] 135.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-135.dyn.MIT.EDU
[0] 136.120.189.18.in-addr.arpa.: domain name does not exist
[60] 137.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-137.dyn.MIT.EDU
[0] 138.120.189.18.in-addr.arpa.: domain name does not exist
[0] 139.120.189.18.in-addr.arpa.: domain name does not exist
[60] 140.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-140.dyn.MIT.EDU
[60] 141.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-141.dyn.MIT.EDU
[60] 142.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-142.dyn.MIT.EDU
[60] 143.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-143.dyn.MIT.EDU
[60] 144.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-144.dyn.MIT.EDU
[0] 145.120.189.18.in-addr.arpa.: domain name does not exist
[0] 146.120.189.18.in-addr.arpa.: domain name does not exist
[60] 147.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-147.dyn.MIT.EDU
[60] 148.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-148.dyn.MIT.EDU
[60] 149.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-149.dyn.MIT.EDU
[0] 150.120.189.18.in-addr.arpa.: domain name does not exist
[0] 151.120.189.18.in-addr.arpa.: domain name does not exist
[0] 152.120.189.18.in-addr.arpa.: domain name does not exist
[60] 153.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-153.dyn.MIT.EDU
[60] 154.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-154.dyn.MIT.EDU
[60] 155.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-155.dyn.MIT.EDU
[60] 156.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-156.dyn.MIT.EDU
[0] 157.120.189.18.in-addr.arpa.: domain name does not exist
[60] 158.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-158.dyn.MIT.EDU
[60] 159.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-159.dyn.MIT.EDU
[0] 160.120.189.18.in-addr.arpa.: domain name does not exist
[60] 161.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-161.dyn.MIT.EDU
[0] 162.120.189.18.in-addr.arpa.: domain name does not exist
[60] 163.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-163.dyn.MIT.EDU
[60] 164.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-164.dyn.MIT.EDU
[0] 165.120.189.18.in-addr.arpa.: domain name does not exist
[0] 166.120.189.18.in-addr.arpa.: domain name does not exist
[60] 167.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-167.dyn.MIT.EDU
[0] 168.120.189.18.in-addr.arpa.: domain name does not exist
[60] 169.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-169.dyn.MIT.EDU
[0] 170.120.189.18.in-addr.arpa.: domain name does not exist
[0] 171.120.189.18.in-addr.arpa.: domain name does not exist
[60] 172.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-172.dyn.MIT.EDU
[60] 173.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-173.dyn.MIT.EDU
[60] 174.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-174.dyn.MIT.EDU
[60] 175.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-175.dyn.MIT.EDU
[60] 176.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-176.dyn.MIT.EDU
[0] 177.120.189.18.in-addr.arpa.: domain name does not exist
[60] 178.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-178.dyn.MIT.EDU
[60] 179.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-179.dyn.MIT.EDU
[0] 180.120.189.18.in-addr.arpa.: domain name does not exist
[0] 181.120.189.18.in-addr.arpa.: domain name does not exist
[0] 182.120.189.18.in-addr.arpa.: domain name does not exist
[0] 183.120.189.18.in-addr.arpa.: domain name does not exist
[0] 184.120.189.18.in-addr.arpa.: domain name does not exist
[0] 185.120.189.18.in-addr.arpa.: domain name does not exist
[60] 186.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-186.dyn.MIT.EDU
[60] 187.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-187.dyn.MIT.EDU
[60] 188.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-188.dyn.MIT.EDU
[0] 189.120.189.18.in-addr.arpa.: domain name does not exist
[60] 190.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-190.dyn.MIT.EDU
[60] 191.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-191.dyn.MIT.EDU
[0] 192.120.189.18.in-addr.arpa.: domain name does not exist
[60] 193.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-193.dyn.MIT.EDU
[60] 194.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-194.dyn.MIT.EDU
[0] 195.120.189.18.in-addr.arpa.: domain name does not exist
[0] 196.120.189.18.in-addr.arpa.: domain name does not exist
[0] 197.120.189.18.in-addr.arpa.: domain name does not exist
[60] 198.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-198.dyn.MIT.EDU
[60] 199.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-199.dyn.MIT.EDU
[0] 200.120.189.18.in-addr.arpa.: domain name does not exist
[60] 201.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-201.dyn.MIT.EDU
[0] 202.120.189.18.in-addr.arpa.: domain name does not exist
[0] 203.120.189.18.in-addr.arpa.: domain name does not exist
[0] 204.120.189.18.in-addr.arpa.: domain name does not exist
[60] 205.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-205.dyn.MIT.EDU
[60] 206.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-206.dyn.MIT.EDU
[60] 207.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-207.dyn.MIT.EDU
[0] 208.120.189.18.in-addr.arpa.: domain name does not exist
[60] 209.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-209.dyn.MIT.EDU
[60] 210.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-210.dyn.MIT.EDU
[0] 211.120.189.18.in-addr.arpa.: domain name does not exist
[60] 212.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-212.dyn.MIT.EDU
[60] 213.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-213.dyn.MIT.EDU
[60] 214.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-214.dyn.MIT.EDU
[60] 215.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-215.dyn.MIT.EDU
[0] 216.120.189.18.in-addr.arpa.: domain name does not exist
[60] 217.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-217.dyn.MIT.EDU
[0] 218.120.189.18.in-addr.arpa.: domain name does not exist
[60] 219.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-219.dyn.MIT.EDU
[60] 220.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-220.dyn.MIT.EDU
[60] 221.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-221.dyn.MIT.EDU
[60] 222.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-222.dyn.MIT.EDU
[0] 223.120.189.18.in-addr.arpa.: domain name does not exist
[60] 224.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-224.dyn.MIT.EDU
[60] 225.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-225.dyn.MIT.EDU
[60] 226.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-226.dyn.MIT.EDU
[60] 227.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-227.dyn.MIT.EDU
[0] 228.120.189.18.in-addr.arpa.: domain name does not exist
[60] 229.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-229.dyn.MIT.EDU
[0] 230.120.189.18.in-addr.arpa.: domain name does not exist
[60] 231.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-231.dyn.MIT.EDU
[0] 232.120.189.18.in-addr.arpa.: domain name does not exist
[0] 233.120.189.18.in-addr.arpa.: domain name does not exist
[60] 234.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-234.dyn.MIT.EDU
[60] 235.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-235.dyn.MIT.EDU
[0] 236.120.189.18.in-addr.arpa.: domain name does not exist
[0] 237.120.189.18.in-addr.arpa.: domain name does not exist
[60] 238.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-238.dyn.MIT.EDU
[60] 239.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-239.dyn.MIT.EDU
[0] 240.120.189.18.in-addr.arpa.: domain name does not exist
[0] 241.120.189.18.in-addr.arpa.: domain name does not exist
[60] 242.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-242.dyn.MIT.EDU
[60] 243.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-243.dyn.MIT.EDU
[60] 244.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-244.dyn.MIT.EDU
[60] 245.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-245.dyn.MIT.EDU
[60] 246.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-246.dyn.MIT.EDU
[60] 247.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-247.dyn.MIT.EDU
[60] 248.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-248.dyn.MIT.EDU
[60] 249.120.189.18.in-addr.arpa. domain name pointer dhcp-18-189-120-249.dyn.MIT.EDU
[0] 250.120.189.18.in-addr.arpa.: domain name does not exist
[0] 251.120.189.18.in-addr.arpa.: domain name does not exist
[0] 252.120.189.18.in-addr.arpa.: domain name does not exist
[0] 253.120.189.18.in-addr.arpa.: domain name does not exist
[0] 254.120.189.18.in-addr.arpa.: domain name does not exist
[0] 255.120.189.18.in-addr.arpa.: domain name does not exist