[0] 0.4.189.18.in-addr.arpa.: domain name does not exist
[0] 1.4.189.18.in-addr.arpa.: domain name does not exist
[0] 2.4.189.18.in-addr.arpa.: domain name does not exist
[0] 3.4.189.18.in-addr.arpa.: domain name does not exist
[0] 4.4.189.18.in-addr.arpa.: domain name does not exist
[60] 5.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-5.dyn.mit.edu
[60] 6.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-6.dyn.mit.edu
[60] 7.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-7.dyn.mit.edu
[60] 8.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-8.dyn.mit.edu
[60] 9.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-9.dyn.mit.edu
[60] 10.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-10.dyn.mit.edu
[60] 11.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-11.dyn.mit.edu
[60] 12.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-12.dyn.mit.edu
[0] 13.4.189.18.in-addr.arpa.: domain name does not exist
[60] 14.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-14.dyn.mit.edu
[0] 15.4.189.18.in-addr.arpa.: domain name does not exist
[60] 16.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-16.dyn.mit.edu
[0] 17.4.189.18.in-addr.arpa.: domain name does not exist
[60] 18.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-18.dyn.mit.edu
[0] 19.4.189.18.in-addr.arpa.: domain name does not exist
[0] 20.4.189.18.in-addr.arpa.: domain name does not exist
[60] 21.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-21.dyn.mit.edu
[0] 22.4.189.18.in-addr.arpa.: domain name does not exist
[60] 23.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-23.dyn.mit.edu
[60] 24.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-24.dyn.mit.edu
[60] 25.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-25.dyn.mit.edu
[60] 26.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-26.dyn.mit.edu
[60] 27.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-27.dyn.mit.edu
[60] 28.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-28.dyn.mit.edu
[0] 29.4.189.18.in-addr.arpa.: domain name does not exist
[60] 30.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-30.dyn.mit.edu
[60] 31.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-31.dyn.mit.edu
[60] 32.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-32.dyn.mit.edu
[0] 33.4.189.18.in-addr.arpa.: domain name does not exist
[0] 34.4.189.18.in-addr.arpa.: domain name does not exist
[60] 35.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-35.dyn.mit.edu
[60] 36.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-36.dyn.mit.edu
[0] 37.4.189.18.in-addr.arpa.: domain name does not exist
[0] 38.4.189.18.in-addr.arpa.: domain name does not exist
[0] 39.4.189.18.in-addr.arpa.: domain name does not exist
[60] 40.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-40.dyn.mit.edu
[0] 41.4.189.18.in-addr.arpa.: domain name does not exist
[60] 42.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-42.dyn.mit.edu
[0] 43.4.189.18.in-addr.arpa.: domain name does not exist
[0] 44.4.189.18.in-addr.arpa.: domain name does not exist
[60] 45.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-45.dyn.mit.edu
[0] 46.4.189.18.in-addr.arpa.: domain name does not exist
[60] 47.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-47.dyn.mit.edu
[60] 48.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-48.dyn.mit.edu
[60] 49.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-49.dyn.mit.edu
[0] 50.4.189.18.in-addr.arpa.: domain name does not exist
[0] 51.4.189.18.in-addr.arpa.: domain name does not exist
[60] 52.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-52.dyn.mit.edu
[0] 53.4.189.18.in-addr.arpa.: domain name does not exist
[0] 54.4.189.18.in-addr.arpa.: domain name does not exist
[60] 55.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-55.dyn.mit.edu
[60] 56.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-56.dyn.mit.edu
[0] 57.4.189.18.in-addr.arpa.: domain name does not exist
[0] 58.4.189.18.in-addr.arpa.: domain name does not exist
[0] 59.4.189.18.in-addr.arpa.: domain name does not exist
[60] 60.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-60.dyn.mit.edu
[0] 61.4.189.18.in-addr.arpa.: domain name does not exist
[0] 62.4.189.18.in-addr.arpa.: domain name does not exist
[60] 63.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-63.dyn.mit.edu
[60] 64.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-64.dyn.mit.edu
[60] 65.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-65.dyn.mit.edu
[0] 66.4.189.18.in-addr.arpa.: domain name does not exist
[60] 67.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-67.dyn.mit.edu
[60] 68.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-68.dyn.mit.edu
[0] 69.4.189.18.in-addr.arpa.: domain name does not exist
[0] 70.4.189.18.in-addr.arpa.: domain name does not exist
[60] 71.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-71.dyn.mit.edu
[60] 72.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-72.dyn.mit.edu
[60] 73.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-73.dyn.mit.edu
[0] 74.4.189.18.in-addr.arpa.: domain name does not exist
[60] 75.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-75.dyn.mit.edu
[60] 76.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-76.dyn.mit.edu
[60] 77.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-77.dyn.mit.edu
[0] 78.4.189.18.in-addr.arpa.: domain name does not exist
[0] 79.4.189.18.in-addr.arpa.: domain name does not exist
[60] 80.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-80.dyn.mit.edu
[60] 81.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-81.dyn.mit.edu
[60] 82.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-82.dyn.mit.edu
[60] 83.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-83.dyn.mit.edu
[60] 84.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-84.dyn.mit.edu
[0] 85.4.189.18.in-addr.arpa.: domain name does not exist
[60] 86.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-86.dyn.mit.edu
[0] 87.4.189.18.in-addr.arpa.: domain name does not exist
[60] 88.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-88.dyn.mit.edu
[60] 89.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-89.dyn.mit.edu
[60] 90.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-90.dyn.mit.edu
[60] 91.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-91.dyn.mit.edu
[0] 92.4.189.18.in-addr.arpa.: domain name does not exist
[60] 93.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-93.dyn.mit.edu
[0] 94.4.189.18.in-addr.arpa.: domain name does not exist
[60] 95.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-95.dyn.mit.edu
[0] 96.4.189.18.in-addr.arpa.: domain name does not exist
[60] 97.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-97.dyn.mit.edu
[60] 98.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-98.dyn.mit.edu
[60] 99.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-99.dyn.mit.edu
[0] 100.4.189.18.in-addr.arpa.: domain name does not exist
[60] 101.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-101.dyn.mit.edu
[60] 102.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-102.dyn.mit.edu
[60] 103.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-103.dyn.mit.edu
[60] 104.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-104.dyn.mit.edu
[0] 105.4.189.18.in-addr.arpa.: domain name does not exist
[60] 106.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-106.dyn.mit.edu
[60] 107.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-107.dyn.mit.edu
[60] 108.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-108.dyn.mit.edu
[60] 109.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-109.dyn.mit.edu
[60] 110.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-110.dyn.mit.edu
[0] 111.4.189.18.in-addr.arpa.: domain name does not exist
[0] 112.4.189.18.in-addr.arpa.: domain name does not exist
[60] 113.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-113.dyn.mit.edu
[0] 114.4.189.18.in-addr.arpa.: domain name does not exist
[60] 115.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-115.dyn.mit.edu
[60] 116.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-116.dyn.mit.edu
[0] 117.4.189.18.in-addr.arpa.: domain name does not exist
[60] 118.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-118.dyn.mit.edu
[0] 119.4.189.18.in-addr.arpa.: domain name does not exist
[60] 120.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-120.dyn.mit.edu
[60] 121.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-121.dyn.mit.edu
[60] 122.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-122.dyn.mit.edu
[60] 123.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-123.dyn.mit.edu
[60] 124.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-124.dyn.mit.edu
[60] 125.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-125.dyn.mit.edu
[0] 126.4.189.18.in-addr.arpa.: domain name does not exist
[0] 127.4.189.18.in-addr.arpa.: domain name does not exist
[60] 128.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-128.dyn.mit.edu
[60] 129.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-129.dyn.mit.edu
[60] 130.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-130.dyn.mit.edu
[0] 131.4.189.18.in-addr.arpa.: domain name does not exist
[60] 132.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-132.dyn.mit.edu
[60] 133.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-133.dyn.mit.edu
[60] 134.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-134.dyn.mit.edu
[0] 135.4.189.18.in-addr.arpa.: domain name does not exist
[60] 136.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-136.dyn.mit.edu
[0] 137.4.189.18.in-addr.arpa.: domain name does not exist
[0] 138.4.189.18.in-addr.arpa.: domain name does not exist
[0] 139.4.189.18.in-addr.arpa.: domain name does not exist
[0] 140.4.189.18.in-addr.arpa.: domain name does not exist
[60] 141.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-141.dyn.mit.edu
[0] 142.4.189.18.in-addr.arpa.: domain name does not exist
[60] 143.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-143.dyn.mit.edu
[0] 144.4.189.18.in-addr.arpa.: domain name does not exist
[60] 145.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-145.dyn.mit.edu
[60] 146.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-146.dyn.mit.edu
[60] 147.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-147.dyn.mit.edu
[60] 148.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-148.dyn.mit.edu
[0] 149.4.189.18.in-addr.arpa.: domain name does not exist
[0] 150.4.189.18.in-addr.arpa.: domain name does not exist
[0] 151.4.189.18.in-addr.arpa.: domain name does not exist
[60] 152.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-152.dyn.mit.edu
[0] 153.4.189.18.in-addr.arpa.: domain name does not exist
[60] 154.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-154.dyn.mit.edu
[60] 155.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-155.dyn.mit.edu
[60] 156.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-156.dyn.mit.edu
[0] 157.4.189.18.in-addr.arpa.: domain name does not exist
[60] 158.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-158.dyn.mit.edu
[60] 159.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-159.dyn.mit.edu
[60] 160.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-160.dyn.mit.edu
[0] 161.4.189.18.in-addr.arpa.: domain name does not exist
[60] 162.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-162.dyn.mit.edu
[0] 163.4.189.18.in-addr.arpa.: domain name does not exist
[0] 164.4.189.18.in-addr.arpa.: domain name does not exist
[0] 165.4.189.18.in-addr.arpa.: domain name does not exist
[60] 166.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-166.dyn.mit.edu
[0] 167.4.189.18.in-addr.arpa.: domain name does not exist
[0] 168.4.189.18.in-addr.arpa.: domain name does not exist
[60] 169.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-169.dyn.mit.edu
[0] 170.4.189.18.in-addr.arpa.: domain name does not exist
[60] 171.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-171.dyn.mit.edu
[60] 172.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-172.dyn.mit.edu
[60] 173.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-173.dyn.mit.edu
[0] 174.4.189.18.in-addr.arpa.: domain name does not exist
[60] 175.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-175.dyn.mit.edu
[60] 176.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-176.dyn.mit.edu
[60] 177.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-177.dyn.mit.edu
[0] 178.4.189.18.in-addr.arpa.: domain name does not exist
[0] 179.4.189.18.in-addr.arpa.: domain name does not exist
[0] 180.4.189.18.in-addr.arpa.: domain name does not exist
[0] 181.4.189.18.in-addr.arpa.: domain name does not exist
[0] 182.4.189.18.in-addr.arpa.: domain name does not exist
[60] 183.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-183.dyn.mit.edu
[60] 184.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-184.dyn.mit.edu
[60] 185.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-185.dyn.mit.edu
[60] 186.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-186.dyn.mit.edu
[60] 187.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-187.dyn.mit.edu
[60] 188.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-188.dyn.mit.edu
[60] 189.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-189.dyn.mit.edu
[0] 190.4.189.18.in-addr.arpa.: domain name does not exist
[0] 191.4.189.18.in-addr.arpa.: domain name does not exist
[60] 192.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-192.dyn.mit.edu
[0] 193.4.189.18.in-addr.arpa.: domain name does not exist
[0] 194.4.189.18.in-addr.arpa.: domain name does not exist
[60] 195.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-195.dyn.mit.edu
[0] 196.4.189.18.in-addr.arpa.: domain name does not exist
[0] 197.4.189.18.in-addr.arpa.: domain name does not exist
[60] 198.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-198.dyn.mit.edu
[0] 199.4.189.18.in-addr.arpa.: domain name does not exist
[60] 200.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-200.dyn.mit.edu
[60] 201.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-201.dyn.mit.edu
[60] 202.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-202.dyn.mit.edu
[60] 203.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-203.dyn.mit.edu
[60] 204.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-204.dyn.mit.edu
[60] 205.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-205.dyn.mit.edu
[60] 206.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-206.dyn.mit.edu
[60] 207.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-207.dyn.mit.edu
[0] 208.4.189.18.in-addr.arpa.: domain name does not exist
[60] 209.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-209.dyn.mit.edu
[0] 210.4.189.18.in-addr.arpa.: domain name does not exist
[0] 211.4.189.18.in-addr.arpa.: domain name does not exist
[60] 212.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-212.dyn.mit.edu
[0] 213.4.189.18.in-addr.arpa.: domain name does not exist
[0] 214.4.189.18.in-addr.arpa.: domain name does not exist
[60] 215.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-215.dyn.mit.edu
[0] 216.4.189.18.in-addr.arpa.: domain name does not exist
[0] 217.4.189.18.in-addr.arpa.: domain name does not exist
[60] 218.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-218.dyn.mit.edu
[60] 219.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-219.dyn.mit.edu
[0] 220.4.189.18.in-addr.arpa.: domain name does not exist
[0] 221.4.189.18.in-addr.arpa.: domain name does not exist
[60] 222.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-222.dyn.mit.edu
[60] 223.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-223.dyn.mit.edu
[0] 224.4.189.18.in-addr.arpa.: domain name does not exist
[60] 225.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-225.dyn.mit.edu
[0] 226.4.189.18.in-addr.arpa.: domain name does not exist
[0] 227.4.189.18.in-addr.arpa.: domain name does not exist
[60] 228.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-228.dyn.mit.edu
[0] 229.4.189.18.in-addr.arpa.: domain name does not exist
[0] 230.4.189.18.in-addr.arpa.: domain name does not exist
[0] 231.4.189.18.in-addr.arpa.: domain name does not exist
[60] 232.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-232.dyn.mit.edu
[0] 233.4.189.18.in-addr.arpa.: domain name does not exist
[0] 234.4.189.18.in-addr.arpa.: domain name does not exist
[60] 235.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-235.dyn.mit.edu
[60] 236.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-236.dyn.mit.edu
[60] 237.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-237.dyn.mit.edu
[0] 238.4.189.18.in-addr.arpa.: domain name does not exist
[60] 239.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-239.dyn.mit.edu
[60] 240.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-240.dyn.mit.edu
[0] 241.4.189.18.in-addr.arpa.: domain name does not exist
[0] 242.4.189.18.in-addr.arpa.: domain name does not exist
[60] 243.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-243.dyn.mit.edu
[0] 244.4.189.18.in-addr.arpa.: domain name does not exist
[60] 245.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-245.dyn.mit.edu
[0] 246.4.189.18.in-addr.arpa.: domain name does not exist
[60] 247.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-247.dyn.mit.edu
[60] 248.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-248.dyn.mit.edu
[0] 249.4.189.18.in-addr.arpa.: domain name does not exist
[60] 250.4.189.18.in-addr.arpa. domain name pointer dhcp-18-189-4-250.dyn.mit.edu
[0] 251.4.189.18.in-addr.arpa.: domain name does not exist
[0] 252.4.189.18.in-addr.arpa.: domain name does not exist
[0] 253.4.189.18.in-addr.arpa.: domain name does not exist
[0] 254.4.189.18.in-addr.arpa.: domain name does not exist
[0] 255.4.189.18.in-addr.arpa.: domain name does not exist