[0] 0.5.189.18.in-addr.arpa.: domain name does not exist
[0] 1.5.189.18.in-addr.arpa.: domain name does not exist
[0] 2.5.189.18.in-addr.arpa.: domain name does not exist
[0] 3.5.189.18.in-addr.arpa.: domain name does not exist
[0] 4.5.189.18.in-addr.arpa.: domain name does not exist
[0] 5.5.189.18.in-addr.arpa.: domain name does not exist
[0] 6.5.189.18.in-addr.arpa.: domain name does not exist
[0] 7.5.189.18.in-addr.arpa.: domain name does not exist
[0] 8.5.189.18.in-addr.arpa.: domain name does not exist
[60] 9.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-9.dyn.MIT.EDU
[0] 10.5.189.18.in-addr.arpa.: domain name does not exist
[60] 11.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-11.dyn.MIT.EDU
[0] 12.5.189.18.in-addr.arpa.: domain name does not exist
[0] 13.5.189.18.in-addr.arpa.: domain name does not exist
[60] 14.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-14.dyn.MIT.EDU
[60] 15.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-15.dyn.MIT.EDU
[0] 16.5.189.18.in-addr.arpa.: domain name does not exist
[60] 17.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-17.dyn.MIT.EDU
[0] 18.5.189.18.in-addr.arpa.: domain name does not exist
[0] 19.5.189.18.in-addr.arpa.: domain name does not exist
[60] 20.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-20.dyn.MIT.EDU
[0] 21.5.189.18.in-addr.arpa.: domain name does not exist
[60] 22.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-22.dyn.MIT.EDU
[60] 23.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-23.dyn.MIT.EDU
[60] 24.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-24.dyn.MIT.EDU
[60] 25.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-25.dyn.MIT.EDU
[60] 26.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-26.dyn.MIT.EDU
[60] 27.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-27.dyn.MIT.EDU
[60] 28.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-28.dyn.MIT.EDU
[0] 29.5.189.18.in-addr.arpa.: domain name does not exist
[60] 30.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-30.dyn.MIT.EDU
[60] 31.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-31.dyn.MIT.EDU
[0] 32.5.189.18.in-addr.arpa.: domain name does not exist
[60] 33.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-33.dyn.MIT.EDU
[60] 34.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-34.dyn.MIT.EDU
[60] 35.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-35.dyn.MIT.EDU
[60] 36.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-36.dyn.MIT.EDU
[0] 37.5.189.18.in-addr.arpa.: domain name does not exist
[60] 38.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-38.dyn.MIT.EDU
[0] 39.5.189.18.in-addr.arpa.: domain name does not exist
[0] 40.5.189.18.in-addr.arpa.: domain name does not exist
[60] 41.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-41.dyn.MIT.EDU
[0] 42.5.189.18.in-addr.arpa.: domain name does not exist
[60] 43.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-43.dyn.MIT.EDU
[60] 44.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-44.dyn.MIT.EDU
[0] 45.5.189.18.in-addr.arpa.: domain name does not exist
[60] 46.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-46.dyn.MIT.EDU
[60] 47.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-47.dyn.MIT.EDU
[60] 48.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-48.dyn.MIT.EDU
[60] 49.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-49.dyn.MIT.EDU
[60] 50.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-50.dyn.MIT.EDU
[0] 51.5.189.18.in-addr.arpa.: domain name does not exist
[60] 52.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-52.dyn.MIT.EDU
[60] 53.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-53.dyn.MIT.EDU
[60] 54.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-54.dyn.MIT.EDU
[60] 55.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-55.dyn.MIT.EDU
[0] 56.5.189.18.in-addr.arpa.: domain name does not exist
[0] 57.5.189.18.in-addr.arpa.: domain name does not exist
[60] 58.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-58.dyn.MIT.EDU
[60] 59.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-59.dyn.MIT.EDU
[0] 60.5.189.18.in-addr.arpa.: domain name does not exist
[60] 61.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-61.dyn.MIT.EDU
[0] 62.5.189.18.in-addr.arpa.: domain name does not exist
[60] 63.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-63.dyn.MIT.EDU
[0] 64.5.189.18.in-addr.arpa.: domain name does not exist
[60] 65.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-65.dyn.MIT.EDU
[0] 66.5.189.18.in-addr.arpa.: domain name does not exist
[60] 67.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-67.dyn.MIT.EDU
[60] 68.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-68.dyn.MIT.EDU
[60] 69.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-69.dyn.MIT.EDU
[0] 70.5.189.18.in-addr.arpa.: domain name does not exist
[0] 71.5.189.18.in-addr.arpa.: domain name does not exist
[0] 72.5.189.18.in-addr.arpa.: domain name does not exist
[0] 73.5.189.18.in-addr.arpa.: domain name does not exist
[0] 74.5.189.18.in-addr.arpa.: domain name does not exist
[60] 75.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-75.dyn.MIT.EDU
[0] 76.5.189.18.in-addr.arpa.: domain name does not exist
[0] 77.5.189.18.in-addr.arpa.: domain name does not exist
[0] 78.5.189.18.in-addr.arpa.: domain name does not exist
[0] 79.5.189.18.in-addr.arpa.: domain name does not exist
[0] 80.5.189.18.in-addr.arpa.: domain name does not exist
[60] 81.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-81.dyn.MIT.EDU
[0] 82.5.189.18.in-addr.arpa.: domain name does not exist
[60] 83.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-83.dyn.MIT.EDU
[0] 84.5.189.18.in-addr.arpa.: domain name does not exist
[0] 85.5.189.18.in-addr.arpa.: domain name does not exist
[60] 86.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-86.dyn.MIT.EDU
[0] 87.5.189.18.in-addr.arpa.: domain name does not exist
[60] 88.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-88.dyn.MIT.EDU
[60] 89.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-89.dyn.MIT.EDU
[60] 90.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-90.dyn.MIT.EDU
[0] 91.5.189.18.in-addr.arpa.: domain name does not exist
[60] 92.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-92.dyn.MIT.EDU
[0] 93.5.189.18.in-addr.arpa.: domain name does not exist
[60] 94.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-94.dyn.MIT.EDU
[60] 95.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-95.dyn.MIT.EDU
[0] 96.5.189.18.in-addr.arpa.: domain name does not exist
[60] 97.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-97.dyn.MIT.EDU
[0] 98.5.189.18.in-addr.arpa.: domain name does not exist
[60] 99.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-99.dyn.MIT.EDU
[60] 100.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-100.dyn.MIT.EDU
[0] 101.5.189.18.in-addr.arpa.: domain name does not exist
[0] 102.5.189.18.in-addr.arpa.: domain name does not exist
[60] 103.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-103.dyn.MIT.EDU
[0] 104.5.189.18.in-addr.arpa.: domain name does not exist
[0] 105.5.189.18.in-addr.arpa.: domain name does not exist
[0] 106.5.189.18.in-addr.arpa.: domain name does not exist
[0] 107.5.189.18.in-addr.arpa.: domain name does not exist
[60] 108.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-108.dyn.MIT.EDU
[60] 109.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-109.dyn.MIT.EDU
[60] 110.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-110.dyn.MIT.EDU
[0] 111.5.189.18.in-addr.arpa.: domain name does not exist
[0] 112.5.189.18.in-addr.arpa.: domain name does not exist
[60] 113.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-113.dyn.MIT.EDU
[0] 114.5.189.18.in-addr.arpa.: domain name does not exist
[0] 115.5.189.18.in-addr.arpa.: domain name does not exist
[60] 116.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-116.dyn.MIT.EDU
[0] 117.5.189.18.in-addr.arpa.: domain name does not exist
[0] 118.5.189.18.in-addr.arpa.: domain name does not exist
[0] 119.5.189.18.in-addr.arpa.: domain name does not exist
[60] 120.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-120.dyn.MIT.EDU
[0] 121.5.189.18.in-addr.arpa.: domain name does not exist
[60] 122.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-122.dyn.MIT.EDU
[60] 123.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-123.dyn.MIT.EDU
[0] 124.5.189.18.in-addr.arpa.: domain name does not exist
[0] 125.5.189.18.in-addr.arpa.: domain name does not exist
[60] 126.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-126.dyn.MIT.EDU
[0] 127.5.189.18.in-addr.arpa.: domain name does not exist
[0] 128.5.189.18.in-addr.arpa.: domain name does not exist
[60] 129.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-129.dyn.MIT.EDU
[0] 130.5.189.18.in-addr.arpa.: domain name does not exist
[0] 131.5.189.18.in-addr.arpa.: domain name does not exist
[60] 132.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-132.dyn.MIT.EDU
[60] 133.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-133.dyn.MIT.EDU
[60] 134.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-134.dyn.MIT.EDU
[0] 135.5.189.18.in-addr.arpa.: domain name does not exist
[60] 136.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-136.dyn.MIT.EDU
[60] 137.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-137.dyn.MIT.EDU
[60] 138.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-138.dyn.MIT.EDU
[60] 139.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-139.dyn.MIT.EDU
[0] 140.5.189.18.in-addr.arpa.: domain name does not exist
[60] 141.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-141.dyn.MIT.EDU
[60] 142.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-142.dyn.MIT.EDU
[0] 143.5.189.18.in-addr.arpa.: domain name does not exist
[0] 144.5.189.18.in-addr.arpa.: domain name does not exist
[0] 145.5.189.18.in-addr.arpa.: domain name does not exist
[60] 146.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-146.dyn.MIT.EDU
[60] 147.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-147.dyn.MIT.EDU
[60] 148.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-148.dyn.MIT.EDU
[60] 149.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-149.dyn.MIT.EDU
[60] 150.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-150.dyn.MIT.EDU
[60] 151.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-151.dyn.MIT.EDU
[0] 152.5.189.18.in-addr.arpa.: domain name does not exist
[60] 153.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-153.dyn.MIT.EDU
[60] 154.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-154.dyn.MIT.EDU
[60] 155.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-155.dyn.MIT.EDU
[60] 156.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-156.dyn.MIT.EDU
[60] 157.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-157.dyn.MIT.EDU
[60] 158.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-158.dyn.MIT.EDU
[0] 159.5.189.18.in-addr.arpa.: domain name does not exist
[60] 160.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-160.dyn.MIT.EDU
[0] 161.5.189.18.in-addr.arpa.: domain name does not exist
[0] 162.5.189.18.in-addr.arpa.: domain name does not exist
[0] 163.5.189.18.in-addr.arpa.: domain name does not exist
[60] 164.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-164.dyn.MIT.EDU
[60] 165.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-165.dyn.MIT.EDU
[60] 166.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-166.dyn.MIT.EDU
[0] 167.5.189.18.in-addr.arpa.: domain name does not exist
[0] 168.5.189.18.in-addr.arpa.: domain name does not exist
[60] 169.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-169.dyn.MIT.EDU
[0] 170.5.189.18.in-addr.arpa.: domain name does not exist
[0] 171.5.189.18.in-addr.arpa.: domain name does not exist
[60] 172.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-172.dyn.MIT.EDU
[60] 173.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-173.dyn.MIT.EDU
[0] 174.5.189.18.in-addr.arpa.: domain name does not exist
[0] 175.5.189.18.in-addr.arpa.: domain name does not exist
[0] 176.5.189.18.in-addr.arpa.: domain name does not exist
[0] 177.5.189.18.in-addr.arpa.: domain name does not exist
[60] 178.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-178.dyn.MIT.EDU
[60] 179.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-179.dyn.MIT.EDU
[60] 180.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-180.dyn.MIT.EDU
[0] 181.5.189.18.in-addr.arpa.: domain name does not exist
[60] 182.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-182.dyn.MIT.EDU
[0] 183.5.189.18.in-addr.arpa.: domain name does not exist
[0] 184.5.189.18.in-addr.arpa.: domain name does not exist
[0] 185.5.189.18.in-addr.arpa.: domain name does not exist
[0] 186.5.189.18.in-addr.arpa.: domain name does not exist
[0] 187.5.189.18.in-addr.arpa.: domain name does not exist
[60] 188.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-188.dyn.MIT.EDU
[0] 189.5.189.18.in-addr.arpa.: domain name does not exist
[60] 190.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-190.dyn.MIT.EDU
[60] 191.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-191.dyn.MIT.EDU
[60] 192.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-192.dyn.MIT.EDU
[60] 193.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-193.dyn.MIT.EDU
[60] 194.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-194.dyn.MIT.EDU
[60] 195.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-195.dyn.MIT.EDU
[0] 196.5.189.18.in-addr.arpa.: domain name does not exist
[0] 197.5.189.18.in-addr.arpa.: domain name does not exist
[60] 198.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-198.dyn.MIT.EDU
[60] 199.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-199.dyn.MIT.EDU
[60] 200.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-200.dyn.MIT.EDU
[0] 201.5.189.18.in-addr.arpa.: domain name does not exist
[60] 202.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-202.dyn.MIT.EDU
[0] 203.5.189.18.in-addr.arpa.: domain name does not exist
[60] 204.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-204.dyn.MIT.EDU
[60] 205.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-205.dyn.MIT.EDU
[0] 206.5.189.18.in-addr.arpa.: domain name does not exist
[0] 207.5.189.18.in-addr.arpa.: domain name does not exist
[0] 208.5.189.18.in-addr.arpa.: domain name does not exist
[0] 209.5.189.18.in-addr.arpa.: domain name does not exist
[0] 210.5.189.18.in-addr.arpa.: domain name does not exist
[0] 211.5.189.18.in-addr.arpa.: domain name does not exist
[0] 212.5.189.18.in-addr.arpa.: domain name does not exist
[60] 213.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-213.dyn.MIT.EDU
[60] 214.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-214.dyn.MIT.EDU
[60] 215.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-215.dyn.MIT.EDU
[60] 216.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-216.dyn.MIT.EDU
[0] 217.5.189.18.in-addr.arpa.: domain name does not exist
[0] 218.5.189.18.in-addr.arpa.: domain name does not exist
[60] 219.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-219.dyn.MIT.EDU
[60] 220.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-220.dyn.MIT.EDU
[60] 221.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-221.dyn.MIT.EDU
[0] 222.5.189.18.in-addr.arpa.: domain name does not exist
[0] 223.5.189.18.in-addr.arpa.: domain name does not exist
[0] 224.5.189.18.in-addr.arpa.: domain name does not exist
[60] 225.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-225.dyn.MIT.EDU
[60] 226.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-226.dyn.MIT.EDU
[0] 227.5.189.18.in-addr.arpa.: domain name does not exist
[60] 228.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-228.dyn.MIT.EDU
[60] 229.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-229.dyn.MIT.EDU
[60] 230.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-230.dyn.MIT.EDU
[60] 231.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-231.dyn.MIT.EDU
[0] 232.5.189.18.in-addr.arpa.: domain name does not exist
[60] 233.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-233.dyn.MIT.EDU
[0] 234.5.189.18.in-addr.arpa.: domain name does not exist
[0] 235.5.189.18.in-addr.arpa.: domain name does not exist
[0] 236.5.189.18.in-addr.arpa.: domain name does not exist
[0] 237.5.189.18.in-addr.arpa.: domain name does not exist
[60] 238.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-238.dyn.MIT.EDU
[60] 239.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-239.dyn.MIT.EDU
[0] 240.5.189.18.in-addr.arpa.: domain name does not exist
[60] 241.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-241.dyn.MIT.EDU
[0] 242.5.189.18.in-addr.arpa.: domain name does not exist
[0] 243.5.189.18.in-addr.arpa.: domain name does not exist
[60] 244.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-244.dyn.MIT.EDU
[0] 245.5.189.18.in-addr.arpa.: domain name does not exist
[60] 246.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-246.dyn.MIT.EDU
[60] 247.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-247.dyn.MIT.EDU
[60] 248.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-248.dyn.MIT.EDU
[0] 249.5.189.18.in-addr.arpa.: domain name does not exist
[60] 250.5.189.18.in-addr.arpa. domain name pointer dhcp-18-189-5-250.dyn.MIT.EDU
[0] 251.5.189.18.in-addr.arpa.: domain name does not exist
[0] 252.5.189.18.in-addr.arpa.: domain name does not exist
[0] 253.5.189.18.in-addr.arpa.: domain name does not exist
[0] 254.5.189.18.in-addr.arpa.: domain name does not exist
[0] 255.5.189.18.in-addr.arpa.: domain name does not exist