[0] 0.56.189.18.in-addr.arpa.: domain name does not exist
[0] 1.56.189.18.in-addr.arpa.: domain name does not exist
[0] 2.56.189.18.in-addr.arpa.: domain name does not exist
[0] 3.56.189.18.in-addr.arpa.: domain name does not exist
[0] 4.56.189.18.in-addr.arpa.: domain name does not exist
[0] 5.56.189.18.in-addr.arpa.: domain name does not exist
[60] 6.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-6.dyn.MIT.EDU
[60] 7.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-7.dyn.MIT.EDU
[60] 8.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-8.dyn.MIT.EDU
[0] 9.56.189.18.in-addr.arpa.: domain name does not exist
[0] 10.56.189.18.in-addr.arpa.: domain name does not exist
[0] 11.56.189.18.in-addr.arpa.: domain name does not exist
[0] 12.56.189.18.in-addr.arpa.: domain name does not exist
[0] 13.56.189.18.in-addr.arpa.: domain name does not exist
[60] 14.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-14.dyn.MIT.EDU
[60] 15.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-15.dyn.MIT.EDU
[0] 16.56.189.18.in-addr.arpa.: domain name does not exist
[0] 17.56.189.18.in-addr.arpa.: domain name does not exist
[60] 18.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-18.dyn.MIT.EDU
[0] 19.56.189.18.in-addr.arpa.: domain name does not exist
[0] 20.56.189.18.in-addr.arpa.: domain name does not exist
[60] 21.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-21.dyn.MIT.EDU
[0] 22.56.189.18.in-addr.arpa.: domain name does not exist
[60] 23.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-23.dyn.MIT.EDU
[60] 24.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-24.dyn.MIT.EDU
[60] 25.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-25.dyn.MIT.EDU
[60] 26.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-26.dyn.MIT.EDU
[0] 27.56.189.18.in-addr.arpa.: domain name does not exist
[60] 28.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-28.dyn.MIT.EDU
[0] 29.56.189.18.in-addr.arpa.: domain name does not exist
[60] 30.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-30.dyn.MIT.EDU
[60] 31.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-31.dyn.MIT.EDU
[60] 32.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-32.dyn.MIT.EDU
[60] 33.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-33.dyn.MIT.EDU
[0] 34.56.189.18.in-addr.arpa.: domain name does not exist
[60] 35.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-35.dyn.MIT.EDU
[0] 36.56.189.18.in-addr.arpa.: domain name does not exist
[60] 37.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-37.dyn.MIT.EDU
[0] 38.56.189.18.in-addr.arpa.: domain name does not exist
[60] 39.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-39.dyn.MIT.EDU
[60] 40.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-40.dyn.MIT.EDU
[0] 41.56.189.18.in-addr.arpa.: domain name does not exist
[0] 42.56.189.18.in-addr.arpa.: domain name does not exist
[60] 43.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-43.dyn.MIT.EDU
[0] 44.56.189.18.in-addr.arpa.: domain name does not exist
[0] 45.56.189.18.in-addr.arpa.: domain name does not exist
[0] 46.56.189.18.in-addr.arpa.: domain name does not exist
[60] 47.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-47.dyn.MIT.EDU
[60] 48.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-48.dyn.MIT.EDU
[0] 49.56.189.18.in-addr.arpa.: domain name does not exist
[0] 50.56.189.18.in-addr.arpa.: domain name does not exist
[60] 51.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-51.dyn.MIT.EDU
[0] 52.56.189.18.in-addr.arpa.: domain name does not exist
[0] 53.56.189.18.in-addr.arpa.: domain name does not exist
[60] 54.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-54.dyn.MIT.EDU
[60] 55.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-55.dyn.MIT.EDU
[60] 56.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-56.dyn.MIT.EDU
[60] 57.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-57.dyn.MIT.EDU
[0] 58.56.189.18.in-addr.arpa.: domain name does not exist
[0] 59.56.189.18.in-addr.arpa.: domain name does not exist
[60] 60.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-60.dyn.MIT.EDU
[0] 61.56.189.18.in-addr.arpa.: domain name does not exist
[60] 62.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-62.dyn.MIT.EDU
[0] 63.56.189.18.in-addr.arpa.: domain name does not exist
[60] 64.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-64.dyn.MIT.EDU
[60] 65.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-65.dyn.MIT.EDU
[60] 66.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-66.dyn.MIT.EDU
[60] 67.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-67.dyn.MIT.EDU
[0] 68.56.189.18.in-addr.arpa.: domain name does not exist
[0] 69.56.189.18.in-addr.arpa.: domain name does not exist
[60] 70.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-70.dyn.MIT.EDU
[60] 71.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-71.dyn.MIT.EDU
[0] 72.56.189.18.in-addr.arpa.: domain name does not exist
[60] 73.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-73.dyn.MIT.EDU
[0] 74.56.189.18.in-addr.arpa.: domain name does not exist
[60] 75.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-75.dyn.MIT.EDU
[60] 76.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-76.dyn.MIT.EDU
[60] 77.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-77.dyn.MIT.EDU
[0] 78.56.189.18.in-addr.arpa.: domain name does not exist
[0] 79.56.189.18.in-addr.arpa.: domain name does not exist
[60] 80.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-80.dyn.MIT.EDU
[60] 81.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-81.dyn.MIT.EDU
[60] 82.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-82.dyn.MIT.EDU
[0] 83.56.189.18.in-addr.arpa.: domain name does not exist
[0] 84.56.189.18.in-addr.arpa.: domain name does not exist
[0] 85.56.189.18.in-addr.arpa.: domain name does not exist
[0] 86.56.189.18.in-addr.arpa.: domain name does not exist
[0] 87.56.189.18.in-addr.arpa.: domain name does not exist
[0] 88.56.189.18.in-addr.arpa.: domain name does not exist
[60] 89.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-89.dyn.MIT.EDU
[60] 90.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-90.dyn.MIT.EDU
[60] 91.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-91.dyn.MIT.EDU
[0] 92.56.189.18.in-addr.arpa.: domain name does not exist
[0] 93.56.189.18.in-addr.arpa.: domain name does not exist
[0] 94.56.189.18.in-addr.arpa.: domain name does not exist
[0] 95.56.189.18.in-addr.arpa.: domain name does not exist
[60] 96.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-96.dyn.MIT.EDU
[60] 97.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-97.dyn.MIT.EDU
[60] 98.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-98.dyn.MIT.EDU
[0] 99.56.189.18.in-addr.arpa.: domain name does not exist
[0] 100.56.189.18.in-addr.arpa.: domain name does not exist
[0] 101.56.189.18.in-addr.arpa.: domain name does not exist
[0] 102.56.189.18.in-addr.arpa.: domain name does not exist
[60] 103.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-103.dyn.MIT.EDU
[60] 104.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-104.dyn.MIT.EDU
[0] 105.56.189.18.in-addr.arpa.: domain name does not exist
[0] 106.56.189.18.in-addr.arpa.: domain name does not exist
[60] 107.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-107.dyn.MIT.EDU
[0] 108.56.189.18.in-addr.arpa.: domain name does not exist
[0] 109.56.189.18.in-addr.arpa.: domain name does not exist
[60] 110.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-110.dyn.MIT.EDU
[60] 111.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-111.dyn.MIT.EDU
[0] 112.56.189.18.in-addr.arpa.: domain name does not exist
[60] 113.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-113.dyn.MIT.EDU
[0] 114.56.189.18.in-addr.arpa.: domain name does not exist
[0] 115.56.189.18.in-addr.arpa.: domain name does not exist
[60] 116.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-116.dyn.MIT.EDU
[0] 117.56.189.18.in-addr.arpa.: domain name does not exist
[0] 118.56.189.18.in-addr.arpa.: domain name does not exist
[0] 119.56.189.18.in-addr.arpa.: domain name does not exist
[0] 120.56.189.18.in-addr.arpa.: domain name does not exist
[0] 121.56.189.18.in-addr.arpa.: domain name does not exist
[0] 122.56.189.18.in-addr.arpa.: domain name does not exist
[60] 123.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-123.dyn.MIT.EDU
[0] 124.56.189.18.in-addr.arpa.: domain name does not exist
[60] 125.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-125.dyn.MIT.EDU
[0] 126.56.189.18.in-addr.arpa.: domain name does not exist
[60] 127.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-127.dyn.MIT.EDU
[60] 128.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-128.dyn.MIT.EDU
[60] 129.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-129.dyn.MIT.EDU
[0] 130.56.189.18.in-addr.arpa.: domain name does not exist
[60] 131.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-131.dyn.MIT.EDU
[60] 132.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-132.dyn.MIT.EDU
[60] 133.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-133.dyn.MIT.EDU
[60] 134.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-134.dyn.MIT.EDU
[60] 135.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-135.dyn.MIT.EDU
[60] 136.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-136.dyn.MIT.EDU
[60] 137.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-137.dyn.MIT.EDU
[60] 138.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-138.dyn.MIT.EDU
[60] 139.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-139.dyn.MIT.EDU
[60] 140.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-140.dyn.MIT.EDU
[0] 141.56.189.18.in-addr.arpa.: domain name does not exist
[0] 142.56.189.18.in-addr.arpa.: domain name does not exist
[60] 143.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-143.dyn.MIT.EDU
[0] 144.56.189.18.in-addr.arpa.: domain name does not exist
[0] 145.56.189.18.in-addr.arpa.: domain name does not exist
[0] 146.56.189.18.in-addr.arpa.: domain name does not exist
[60] 147.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-147.dyn.MIT.EDU
[60] 148.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-148.dyn.MIT.EDU
[60] 149.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-149.dyn.MIT.EDU
[60] 150.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-150.dyn.MIT.EDU
[0] 151.56.189.18.in-addr.arpa.: domain name does not exist
[0] 152.56.189.18.in-addr.arpa.: domain name does not exist
[60] 153.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-153.dyn.MIT.EDU
[0] 154.56.189.18.in-addr.arpa.: domain name does not exist
[60] 155.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-155.dyn.MIT.EDU
[60] 156.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-156.dyn.MIT.EDU
[0] 157.56.189.18.in-addr.arpa.: domain name does not exist
[0] 158.56.189.18.in-addr.arpa.: domain name does not exist
[60] 159.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-159.dyn.MIT.EDU
[60] 160.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-160.dyn.MIT.EDU
[60] 161.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-161.dyn.MIT.EDU
[60] 162.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-162.dyn.MIT.EDU
[60] 163.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-163.dyn.MIT.EDU
[60] 164.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-164.dyn.MIT.EDU
[0] 165.56.189.18.in-addr.arpa.: domain name does not exist
[0] 166.56.189.18.in-addr.arpa.: domain name does not exist
[0] 167.56.189.18.in-addr.arpa.: domain name does not exist
[60] 168.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-168.dyn.MIT.EDU
[0] 169.56.189.18.in-addr.arpa.: domain name does not exist
[60] 170.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-170.dyn.MIT.EDU
[0] 171.56.189.18.in-addr.arpa.: domain name does not exist
[60] 172.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-172.dyn.MIT.EDU
[60] 173.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-173.dyn.MIT.EDU
[60] 174.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-174.dyn.MIT.EDU
[0] 175.56.189.18.in-addr.arpa.: domain name does not exist
[0] 176.56.189.18.in-addr.arpa.: domain name does not exist
[60] 177.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-177.dyn.MIT.EDU
[60] 178.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-178.dyn.MIT.EDU
[60] 179.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-179.dyn.MIT.EDU
[0] 180.56.189.18.in-addr.arpa.: domain name does not exist
[0] 181.56.189.18.in-addr.arpa.: domain name does not exist
[60] 182.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-182.dyn.MIT.EDU
[0] 183.56.189.18.in-addr.arpa.: domain name does not exist
[0] 184.56.189.18.in-addr.arpa.: domain name does not exist
[0] 185.56.189.18.in-addr.arpa.: domain name does not exist
[60] 186.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-186.dyn.MIT.EDU
[60] 187.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-187.dyn.MIT.EDU
[60] 188.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-188.dyn.MIT.EDU
[60] 189.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-189.dyn.MIT.EDU
[60] 190.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-190.dyn.MIT.EDU
[0] 191.56.189.18.in-addr.arpa.: domain name does not exist
[0] 192.56.189.18.in-addr.arpa.: domain name does not exist
[60] 193.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-193.dyn.MIT.EDU
[60] 194.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-194.dyn.MIT.EDU
[60] 195.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-195.dyn.MIT.EDU
[0] 196.56.189.18.in-addr.arpa.: domain name does not exist
[0] 197.56.189.18.in-addr.arpa.: domain name does not exist
[0] 198.56.189.18.in-addr.arpa.: domain name does not exist
[60] 199.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-199.dyn.MIT.EDU
[0] 200.56.189.18.in-addr.arpa.: domain name does not exist
[0] 201.56.189.18.in-addr.arpa.: domain name does not exist
[0] 202.56.189.18.in-addr.arpa.: domain name does not exist
[0] 203.56.189.18.in-addr.arpa.: domain name does not exist
[60] 204.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-204.dyn.MIT.EDU
[0] 205.56.189.18.in-addr.arpa.: domain name does not exist
[60] 206.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-206.dyn.MIT.EDU
[60] 207.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-207.dyn.MIT.EDU
[0] 208.56.189.18.in-addr.arpa.: domain name does not exist
[0] 209.56.189.18.in-addr.arpa.: domain name does not exist
[60] 210.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-210.dyn.MIT.EDU
[60] 211.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-211.dyn.MIT.EDU
[60] 212.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-212.dyn.MIT.EDU
[60] 213.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-213.dyn.MIT.EDU
[0] 214.56.189.18.in-addr.arpa.: domain name does not exist
[60] 215.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-215.dyn.MIT.EDU
[0] 216.56.189.18.in-addr.arpa.: domain name does not exist
[60] 217.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-217.dyn.MIT.EDU
[60] 218.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-218.dyn.MIT.EDU
[60] 219.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-219.dyn.MIT.EDU
[0] 220.56.189.18.in-addr.arpa.: domain name does not exist
[0] 221.56.189.18.in-addr.arpa.: domain name does not exist
[60] 222.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-222.dyn.MIT.EDU
[60] 223.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-223.dyn.MIT.EDU
[60] 224.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-224.dyn.MIT.EDU
[60] 225.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-225.dyn.MIT.EDU
[60] 226.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-226.dyn.MIT.EDU
[0] 227.56.189.18.in-addr.arpa.: domain name does not exist
[60] 228.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-228.dyn.MIT.EDU
[0] 229.56.189.18.in-addr.arpa.: domain name does not exist
[0] 230.56.189.18.in-addr.arpa.: domain name does not exist
[60] 231.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-231.dyn.MIT.EDU
[60] 232.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-232.dyn.MIT.EDU
[0] 233.56.189.18.in-addr.arpa.: domain name does not exist
[60] 234.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-234.dyn.MIT.EDU
[60] 235.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-235.dyn.MIT.EDU
[60] 236.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-236.dyn.MIT.EDU
[60] 237.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-237.dyn.MIT.EDU
[0] 238.56.189.18.in-addr.arpa.: domain name does not exist
[60] 239.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-239.dyn.MIT.EDU
[60] 240.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-240.dyn.MIT.EDU
[60] 241.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-241.dyn.MIT.EDU
[0] 242.56.189.18.in-addr.arpa.: domain name does not exist
[0] 243.56.189.18.in-addr.arpa.: domain name does not exist
[0] 244.56.189.18.in-addr.arpa.: domain name does not exist
[0] 245.56.189.18.in-addr.arpa.: domain name does not exist
[60] 246.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-246.dyn.MIT.EDU
[60] 247.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-247.dyn.MIT.EDU
[60] 248.56.189.18.in-addr.arpa. domain name pointer dhcp-18-189-56-248.dyn.MIT.EDU
[0] 249.56.189.18.in-addr.arpa.: domain name does not exist
[0] 250.56.189.18.in-addr.arpa.: domain name does not exist
[0] 251.56.189.18.in-addr.arpa.: domain name does not exist
[0] 252.56.189.18.in-addr.arpa.: domain name does not exist
[0] 253.56.189.18.in-addr.arpa.: domain name does not exist
[0] 254.56.189.18.in-addr.arpa.: domain name does not exist
[0] 255.56.189.18.in-addr.arpa.: domain name does not exist