[0] 0.54.189.18.in-addr.arpa.: domain name does not exist
[0] 1.54.189.18.in-addr.arpa.: domain name does not exist
[0] 2.54.189.18.in-addr.arpa.: domain name does not exist
[0] 3.54.189.18.in-addr.arpa.: domain name does not exist
[0] 4.54.189.18.in-addr.arpa.: domain name does not exist
[60] 5.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-5.dyn.MIT.EDU
[0] 6.54.189.18.in-addr.arpa.: domain name does not exist
[60] 7.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-7.dyn.MIT.EDU
[60] 8.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-8.dyn.MIT.EDU
[60] 9.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-9.dyn.MIT.EDU
[0] 10.54.189.18.in-addr.arpa.: domain name does not exist
[0] 11.54.189.18.in-addr.arpa.: domain name does not exist
[0] 12.54.189.18.in-addr.arpa.: domain name does not exist
[0] 13.54.189.18.in-addr.arpa.: domain name does not exist
[0] 14.54.189.18.in-addr.arpa.: domain name does not exist
[60] 15.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-15.dyn.MIT.EDU
[60] 16.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-16.dyn.MIT.EDU
[0] 17.54.189.18.in-addr.arpa.: domain name does not exist
[60] 18.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-18.dyn.MIT.EDU
[0] 19.54.189.18.in-addr.arpa.: domain name does not exist
[60] 20.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-20.dyn.MIT.EDU
[60] 21.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-21.dyn.MIT.EDU
[0] 22.54.189.18.in-addr.arpa.: domain name does not exist
[60] 23.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-23.dyn.MIT.EDU
[0] 24.54.189.18.in-addr.arpa.: domain name does not exist
[0] 25.54.189.18.in-addr.arpa.: domain name does not exist
[0] 26.54.189.18.in-addr.arpa.: domain name does not exist
[60] 27.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-27.dyn.MIT.EDU
[60] 28.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-28.dyn.MIT.EDU
[0] 29.54.189.18.in-addr.arpa.: domain name does not exist
[60] 30.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-30.dyn.MIT.EDU
[0] 31.54.189.18.in-addr.arpa.: domain name does not exist
[0] 32.54.189.18.in-addr.arpa.: domain name does not exist
[60] 33.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-33.dyn.MIT.EDU
[60] 34.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-34.dyn.MIT.EDU
[60] 35.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-35.dyn.MIT.EDU
[60] 36.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-36.dyn.MIT.EDU
[60] 37.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-37.dyn.MIT.EDU
[60] 38.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-38.dyn.MIT.EDU
[0] 39.54.189.18.in-addr.arpa.: domain name does not exist
[60] 40.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-40.dyn.MIT.EDU
[0] 41.54.189.18.in-addr.arpa.: domain name does not exist
[60] 42.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-42.dyn.MIT.EDU
[60] 43.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-43.dyn.MIT.EDU
[60] 44.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-44.dyn.MIT.EDU
[0] 45.54.189.18.in-addr.arpa.: domain name does not exist
[60] 46.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-46.dyn.MIT.EDU
[60] 47.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-47.dyn.MIT.EDU
[0] 48.54.189.18.in-addr.arpa.: domain name does not exist
[0] 49.54.189.18.in-addr.arpa.: domain name does not exist
[60] 50.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-50.dyn.MIT.EDU
[60] 51.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-51.dyn.MIT.EDU
[0] 52.54.189.18.in-addr.arpa.: domain name does not exist
[0] 53.54.189.18.in-addr.arpa.: domain name does not exist
[60] 54.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-54.dyn.MIT.EDU
[60] 55.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-55.dyn.MIT.EDU
[0] 56.54.189.18.in-addr.arpa.: domain name does not exist
[0] 57.54.189.18.in-addr.arpa.: domain name does not exist
[60] 58.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-58.dyn.MIT.EDU
[0] 59.54.189.18.in-addr.arpa.: domain name does not exist
[60] 60.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-60.dyn.MIT.EDU
[0] 61.54.189.18.in-addr.arpa.: domain name does not exist
[0] 62.54.189.18.in-addr.arpa.: domain name does not exist
[0] 63.54.189.18.in-addr.arpa.: domain name does not exist
[60] 64.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-64.dyn.MIT.EDU
[0] 65.54.189.18.in-addr.arpa.: domain name does not exist
[60] 66.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-66.dyn.MIT.EDU
[60] 67.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-67.dyn.MIT.EDU
[60] 68.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-68.dyn.MIT.EDU
[60] 69.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-69.dyn.MIT.EDU
[60] 70.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-70.dyn.MIT.EDU
[60] 71.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-71.dyn.MIT.EDU
[60] 72.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-72.dyn.MIT.EDU
[60] 73.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-73.dyn.MIT.EDU
[60] 74.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-74.dyn.MIT.EDU
[0] 75.54.189.18.in-addr.arpa.: domain name does not exist
[60] 76.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-76.dyn.MIT.EDU
[0] 77.54.189.18.in-addr.arpa.: domain name does not exist
[60] 78.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-78.dyn.MIT.EDU
[0] 79.54.189.18.in-addr.arpa.: domain name does not exist
[0] 80.54.189.18.in-addr.arpa.: domain name does not exist
[60] 81.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-81.dyn.MIT.EDU
[60] 82.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-82.dyn.MIT.EDU
[0] 83.54.189.18.in-addr.arpa.: domain name does not exist
[0] 84.54.189.18.in-addr.arpa.: domain name does not exist
[0] 85.54.189.18.in-addr.arpa.: domain name does not exist
[0] 86.54.189.18.in-addr.arpa.: domain name does not exist
[0] 87.54.189.18.in-addr.arpa.: domain name does not exist
[0] 88.54.189.18.in-addr.arpa.: domain name does not exist
[60] 89.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-89.dyn.MIT.EDU
[0] 90.54.189.18.in-addr.arpa.: domain name does not exist
[0] 91.54.189.18.in-addr.arpa.: domain name does not exist
[60] 92.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-92.dyn.MIT.EDU
[60] 93.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-93.dyn.MIT.EDU
[60] 94.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-94.dyn.MIT.EDU
[60] 95.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-95.dyn.MIT.EDU
[60] 96.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-96.dyn.MIT.EDU
[60] 97.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-97.dyn.MIT.EDU
[0] 98.54.189.18.in-addr.arpa.: domain name does not exist
[0] 99.54.189.18.in-addr.arpa.: domain name does not exist
[60] 100.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-100.dyn.MIT.EDU
[60] 101.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-101.dyn.MIT.EDU
[0] 102.54.189.18.in-addr.arpa.: domain name does not exist
[60] 103.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-103.dyn.MIT.EDU
[60] 104.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-104.dyn.MIT.EDU
[60] 105.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-105.dyn.MIT.EDU
[0] 106.54.189.18.in-addr.arpa.: domain name does not exist
[60] 107.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-107.dyn.MIT.EDU
[60] 108.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-108.dyn.MIT.EDU
[60] 109.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-109.dyn.MIT.EDU
[60] 110.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-110.dyn.MIT.EDU
[0] 111.54.189.18.in-addr.arpa.: domain name does not exist
[60] 112.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-112.dyn.MIT.EDU
[0] 113.54.189.18.in-addr.arpa.: domain name does not exist
[60] 114.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-114.dyn.MIT.EDU
[0] 115.54.189.18.in-addr.arpa.: domain name does not exist
[0] 116.54.189.18.in-addr.arpa.: domain name does not exist
[0] 117.54.189.18.in-addr.arpa.: domain name does not exist
[0] 118.54.189.18.in-addr.arpa.: domain name does not exist
[60] 119.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-119.dyn.MIT.EDU
[0] 120.54.189.18.in-addr.arpa.: domain name does not exist
[0] 121.54.189.18.in-addr.arpa.: domain name does not exist
[60] 122.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-122.dyn.MIT.EDU
[0] 123.54.189.18.in-addr.arpa.: domain name does not exist
[0] 124.54.189.18.in-addr.arpa.: domain name does not exist
[0] 125.54.189.18.in-addr.arpa.: domain name does not exist
[60] 126.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-126.dyn.MIT.EDU
[0] 127.54.189.18.in-addr.arpa.: domain name does not exist
[0] 128.54.189.18.in-addr.arpa.: domain name does not exist
[60] 129.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-129.dyn.MIT.EDU
[60] 130.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-130.dyn.MIT.EDU
[0] 131.54.189.18.in-addr.arpa.: domain name does not exist
[60] 132.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-132.dyn.MIT.EDU
[60] 133.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-133.dyn.MIT.EDU
[0] 134.54.189.18.in-addr.arpa.: domain name does not exist
[0] 135.54.189.18.in-addr.arpa.: domain name does not exist
[0] 136.54.189.18.in-addr.arpa.: domain name does not exist
[60] 137.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-137.dyn.MIT.EDU
[60] 138.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-138.dyn.MIT.EDU
[60] 139.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-139.dyn.MIT.EDU
[60] 140.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-140.dyn.MIT.EDU
[0] 141.54.189.18.in-addr.arpa.: domain name does not exist
[60] 142.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-142.dyn.MIT.EDU
[0] 143.54.189.18.in-addr.arpa.: domain name does not exist
[0] 144.54.189.18.in-addr.arpa.: domain name does not exist
[60] 145.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-145.dyn.MIT.EDU
[60] 146.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-146.dyn.MIT.EDU
[0] 147.54.189.18.in-addr.arpa.: domain name does not exist
[0] 148.54.189.18.in-addr.arpa.: domain name does not exist
[0] 149.54.189.18.in-addr.arpa.: domain name does not exist
[0] 150.54.189.18.in-addr.arpa.: domain name does not exist
[0] 151.54.189.18.in-addr.arpa.: domain name does not exist
[60] 152.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-152.dyn.MIT.EDU
[0] 153.54.189.18.in-addr.arpa.: domain name does not exist
[60] 154.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-154.dyn.MIT.EDU
[0] 155.54.189.18.in-addr.arpa.: domain name does not exist
[60] 156.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-156.dyn.MIT.EDU
[0] 157.54.189.18.in-addr.arpa.: domain name does not exist
[0] 158.54.189.18.in-addr.arpa.: domain name does not exist
[60] 159.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-159.dyn.MIT.EDU
[60] 160.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-160.dyn.MIT.EDU
[0] 161.54.189.18.in-addr.arpa.: domain name does not exist
[0] 162.54.189.18.in-addr.arpa.: domain name does not exist
[60] 163.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-163.dyn.MIT.EDU
[0] 164.54.189.18.in-addr.arpa.: domain name does not exist
[60] 165.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-165.dyn.MIT.EDU
[0] 166.54.189.18.in-addr.arpa.: domain name does not exist
[60] 167.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-167.dyn.MIT.EDU
[60] 168.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-168.dyn.MIT.EDU
[0] 169.54.189.18.in-addr.arpa.: domain name does not exist
[60] 170.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-170.dyn.MIT.EDU
[0] 171.54.189.18.in-addr.arpa.: domain name does not exist
[0] 172.54.189.18.in-addr.arpa.: domain name does not exist
[60] 173.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-173.dyn.MIT.EDU
[60] 174.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-174.dyn.MIT.EDU
[60] 175.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-175.dyn.MIT.EDU
[60] 176.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-176.dyn.MIT.EDU
[0] 177.54.189.18.in-addr.arpa.: domain name does not exist
[60] 178.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-178.dyn.MIT.EDU
[60] 179.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-179.dyn.MIT.EDU
[60] 180.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-180.dyn.MIT.EDU
[60] 181.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-181.dyn.MIT.EDU
[60] 182.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-182.dyn.MIT.EDU
[0] 183.54.189.18.in-addr.arpa.: domain name does not exist
[60] 184.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-184.dyn.MIT.EDU
[60] 185.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-185.dyn.MIT.EDU
[60] 186.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-186.dyn.MIT.EDU
[60] 187.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-187.dyn.MIT.EDU
[0] 188.54.189.18.in-addr.arpa.: domain name does not exist
[60] 189.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-189.dyn.MIT.EDU
[60] 190.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-190.dyn.MIT.EDU
[0] 191.54.189.18.in-addr.arpa.: domain name does not exist
[0] 192.54.189.18.in-addr.arpa.: domain name does not exist
[0] 193.54.189.18.in-addr.arpa.: domain name does not exist
[60] 194.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-194.dyn.MIT.EDU
[0] 195.54.189.18.in-addr.arpa.: domain name does not exist
[0] 196.54.189.18.in-addr.arpa.: domain name does not exist
[60] 197.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-197.dyn.MIT.EDU
[60] 198.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-198.dyn.MIT.EDU
[60] 199.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-199.dyn.MIT.EDU
[60] 200.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-200.dyn.MIT.EDU
[0] 201.54.189.18.in-addr.arpa.: domain name does not exist
[0] 202.54.189.18.in-addr.arpa.: domain name does not exist
[0] 203.54.189.18.in-addr.arpa.: domain name does not exist
[60] 204.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-204.dyn.MIT.EDU
[60] 205.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-205.dyn.MIT.EDU
[60] 206.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-206.dyn.MIT.EDU
[0] 207.54.189.18.in-addr.arpa.: domain name does not exist
[60] 208.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-208.dyn.MIT.EDU
[60] 209.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-209.dyn.MIT.EDU
[60] 210.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-210.dyn.MIT.EDU
[60] 211.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-211.dyn.MIT.EDU
[0] 212.54.189.18.in-addr.arpa.: domain name does not exist
[60] 213.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-213.dyn.MIT.EDU
[60] 214.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-214.dyn.MIT.EDU
[60] 215.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-215.dyn.MIT.EDU
[60] 216.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-216.dyn.MIT.EDU
[60] 217.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-217.dyn.MIT.EDU
[60] 218.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-218.dyn.MIT.EDU
[0] 219.54.189.18.in-addr.arpa.: domain name does not exist
[0] 220.54.189.18.in-addr.arpa.: domain name does not exist
[60] 221.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-221.dyn.MIT.EDU
[60] 222.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-222.dyn.MIT.EDU
[0] 223.54.189.18.in-addr.arpa.: domain name does not exist
[60] 224.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-224.dyn.MIT.EDU
[0] 225.54.189.18.in-addr.arpa.: domain name does not exist
[60] 226.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-226.dyn.MIT.EDU
[0] 227.54.189.18.in-addr.arpa.: domain name does not exist
[60] 228.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-228.dyn.MIT.EDU
[60] 229.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-229.dyn.MIT.EDU
[0] 230.54.189.18.in-addr.arpa.: domain name does not exist
[60] 231.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-231.dyn.MIT.EDU
[0] 232.54.189.18.in-addr.arpa.: domain name does not exist
[60] 233.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-233.dyn.MIT.EDU
[0] 234.54.189.18.in-addr.arpa.: domain name does not exist
[60] 235.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-235.dyn.MIT.EDU
[60] 236.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-236.dyn.MIT.EDU
[0] 237.54.189.18.in-addr.arpa.: domain name does not exist
[0] 238.54.189.18.in-addr.arpa.: domain name does not exist
[60] 239.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-239.dyn.MIT.EDU
[60] 240.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-240.dyn.MIT.EDU
[60] 241.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-241.dyn.MIT.EDU
[60] 242.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-242.dyn.MIT.EDU
[0] 243.54.189.18.in-addr.arpa.: domain name does not exist
[0] 244.54.189.18.in-addr.arpa.: domain name does not exist
[0] 245.54.189.18.in-addr.arpa.: domain name does not exist
[0] 246.54.189.18.in-addr.arpa.: domain name does not exist
[60] 247.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-247.dyn.MIT.EDU
[0] 248.54.189.18.in-addr.arpa.: domain name does not exist
[0] 249.54.189.18.in-addr.arpa.: domain name does not exist
[60] 250.54.189.18.in-addr.arpa. domain name pointer dhcp-18-189-54-250.dyn.MIT.EDU
[0] 251.54.189.18.in-addr.arpa.: domain name does not exist
[0] 252.54.189.18.in-addr.arpa.: domain name does not exist
[0] 253.54.189.18.in-addr.arpa.: domain name does not exist
[0] 254.54.189.18.in-addr.arpa.: domain name does not exist
[0] 255.54.189.18.in-addr.arpa.: domain name does not exist