[0] 0.40.39.160.in-addr.arpa.: domain name does not exist
[3600] 1.40.39.160.in-addr.arpa. domain name pointer mudd-edge-1-vlan918-1.net.columbia.edu
[0] 2.40.39.160.in-addr.arpa.: domain name does not exist
[0] 3.40.39.160.in-addr.arpa.: domain name does not exist
[0] 4.40.39.160.in-addr.arpa.: domain name does not exist
[0] 5.40.39.160.in-addr.arpa.: domain name does not exist
[0] 6.40.39.160.in-addr.arpa.: domain name does not exist
[0] 7.40.39.160.in-addr.arpa.: domain name does not exist
[0] 8.40.39.160.in-addr.arpa.: domain name does not exist
[0] 9.40.39.160.in-addr.arpa.: domain name does not exist
[3600] 10.40.39.160.in-addr.arpa. domain name pointer amersham.cc.columbia.edu
[3600] 11.40.39.160.in-addr.arpa. domain name pointer poblano-t3.cc.columbia.edu
[0] 12.40.39.160.in-addr.arpa.: domain name does not exist
[0] 13.40.39.160.in-addr.arpa.: domain name does not exist
[0] 14.40.39.160.in-addr.arpa.: domain name does not exist
[0] 15.40.39.160.in-addr.arpa.: domain name does not exist
[0] 16.40.39.160.in-addr.arpa.: domain name does not exist
[0] 17.40.39.160.in-addr.arpa.: domain name does not exist
[0] 18.40.39.160.in-addr.arpa.: domain name does not exist
[0] 19.40.39.160.in-addr.arpa.: domain name does not exist
[0] 20.40.39.160.in-addr.arpa.: domain name does not exist
[0] 21.40.39.160.in-addr.arpa.: domain name does not exist
[0] 22.40.39.160.in-addr.arpa.: domain name does not exist
[0] 23.40.39.160.in-addr.arpa.: domain name does not exist
[0] 24.40.39.160.in-addr.arpa.: domain name does not exist
[0] 25.40.39.160.in-addr.arpa.: domain name does not exist
[0] 26.40.39.160.in-addr.arpa.: domain name does not exist
[0] 27.40.39.160.in-addr.arpa.: domain name does not exist
[0] 28.40.39.160.in-addr.arpa.: domain name does not exist
[0] 29.40.39.160.in-addr.arpa.: domain name does not exist
[0] 30.40.39.160.in-addr.arpa.: domain name does not exist
[0] 31.40.39.160.in-addr.arpa.: domain name does not exist
[0] 32.40.39.160.in-addr.arpa.: domain name does not exist
[0] 33.40.39.160.in-addr.arpa.: domain name does not exist
[0] 34.40.39.160.in-addr.arpa.: domain name does not exist
[0] 35.40.39.160.in-addr.arpa.: domain name does not exist
[0] 36.40.39.160.in-addr.arpa.: domain name does not exist
[0] 37.40.39.160.in-addr.arpa.: domain name does not exist
[0] 38.40.39.160.in-addr.arpa.: domain name does not exist
[0] 39.40.39.160.in-addr.arpa.: domain name does not exist
[0] 40.40.39.160.in-addr.arpa.: domain name does not exist
[0] 41.40.39.160.in-addr.arpa.: domain name does not exist
[0] 42.40.39.160.in-addr.arpa.: domain name does not exist
[0] 43.40.39.160.in-addr.arpa.: domain name does not exist
[0] 44.40.39.160.in-addr.arpa.: domain name does not exist
[0] 45.40.39.160.in-addr.arpa.: domain name does not exist
[0] 46.40.39.160.in-addr.arpa.: domain name does not exist
[0] 47.40.39.160.in-addr.arpa.: domain name does not exist
[0] 48.40.39.160.in-addr.arpa.: domain name does not exist
[0] 49.40.39.160.in-addr.arpa.: domain name does not exist
[0] 50.40.39.160.in-addr.arpa.: domain name does not exist
[0] 51.40.39.160.in-addr.arpa.: domain name does not exist
[0] 52.40.39.160.in-addr.arpa.: domain name does not exist
[0] 53.40.39.160.in-addr.arpa.: domain name does not exist
[0] 54.40.39.160.in-addr.arpa.: domain name does not exist
[0] 55.40.39.160.in-addr.arpa.: domain name does not exist
[0] 56.40.39.160.in-addr.arpa.: domain name does not exist
[0] 57.40.39.160.in-addr.arpa.: domain name does not exist
[0] 58.40.39.160.in-addr.arpa.: domain name does not exist
[0] 59.40.39.160.in-addr.arpa.: domain name does not exist
[0] 60.40.39.160.in-addr.arpa.: domain name does not exist
[0] 61.40.39.160.in-addr.arpa.: domain name does not exist
[0] 62.40.39.160.in-addr.arpa.: domain name does not exist
[0] 63.40.39.160.in-addr.arpa.: domain name does not exist
[0] 64.40.39.160.in-addr.arpa.: domain name does not exist
[0] 65.40.39.160.in-addr.arpa.: domain name does not exist
[0] 66.40.39.160.in-addr.arpa.: domain name does not exist
[0] 67.40.39.160.in-addr.arpa.: domain name does not exist
[0] 68.40.39.160.in-addr.arpa.: domain name does not exist
[0] 69.40.39.160.in-addr.arpa.: domain name does not exist
[0] 70.40.39.160.in-addr.arpa.: domain name does not exist
[0] 71.40.39.160.in-addr.arpa.: domain name does not exist
[0] 72.40.39.160.in-addr.arpa.: domain name does not exist
[0] 73.40.39.160.in-addr.arpa.: domain name does not exist
[0] 74.40.39.160.in-addr.arpa.: domain name does not exist
[0] 75.40.39.160.in-addr.arpa.: domain name does not exist
[0] 76.40.39.160.in-addr.arpa.: domain name does not exist
[0] 77.40.39.160.in-addr.arpa.: domain name does not exist
[0] 78.40.39.160.in-addr.arpa.: domain name does not exist
[0] 79.40.39.160.in-addr.arpa.: domain name does not exist
[0] 80.40.39.160.in-addr.arpa.: domain name does not exist
[0] 81.40.39.160.in-addr.arpa.: domain name does not exist
[0] 82.40.39.160.in-addr.arpa.: domain name does not exist
[0] 83.40.39.160.in-addr.arpa.: domain name does not exist
[0] 84.40.39.160.in-addr.arpa.: domain name does not exist
[0] 85.40.39.160.in-addr.arpa.: domain name does not exist
[0] 86.40.39.160.in-addr.arpa.: domain name does not exist
[0] 87.40.39.160.in-addr.arpa.: domain name does not exist
[0] 88.40.39.160.in-addr.arpa.: domain name does not exist
[0] 89.40.39.160.in-addr.arpa.: domain name does not exist
[0] 90.40.39.160.in-addr.arpa.: domain name does not exist
[0] 91.40.39.160.in-addr.arpa.: domain name does not exist
[0] 92.40.39.160.in-addr.arpa.: domain name does not exist
[0] 93.40.39.160.in-addr.arpa.: domain name does not exist
[0] 94.40.39.160.in-addr.arpa.: domain name does not exist
[0] 95.40.39.160.in-addr.arpa.: domain name does not exist
[0] 96.40.39.160.in-addr.arpa.: domain name does not exist
[0] 97.40.39.160.in-addr.arpa.: domain name does not exist
[0] 98.40.39.160.in-addr.arpa.: domain name does not exist
[0] 99.40.39.160.in-addr.arpa.: domain name does not exist
[0] 100.40.39.160.in-addr.arpa.: domain name does not exist
[3600] 101.40.39.160.in-addr.arpa. domain name pointer fair-b-2.net.columbia.edu
[3600] 102.40.39.160.in-addr.arpa. domain name pointer ire-540w122-b-1.net.columbia.edu
[3600] 103.40.39.160.in-addr.arpa. domain name pointer ire-540w122-b-1-ups.net.columbia.edu
[3600] 104.40.39.160.in-addr.arpa. domain name pointer ire-530w122-b-1.net.columbia.edu
[3600] 105.40.39.160.in-addr.arpa. domain name pointer ire-530w122-b-1-ups.net.columbia.edu
[3600] 106.40.39.160.in-addr.arpa. domain name pointer ire-527w121-b-1.net.columbia.edu
[3600] 107.40.39.160.in-addr.arpa. domain name pointer ire-527w121-b-1-ups.net.columbia.edu
[3600] 108.40.39.160.in-addr.arpa. domain name pointer ire-526w122-b-1.net.columbia.edu
[3600] 109.40.39.160.in-addr.arpa. domain name pointer ire-526w122-b-1-ups.net.columbia.edu
[3600] 110.40.39.160.in-addr.arpa. domain name pointer ire-524w122-b-1.net.columbia.edu
[3600] 111.40.39.160.in-addr.arpa. domain name pointer ire-524w122-b-1-ups.net.columbia.edu
[3600] 112.40.39.160.in-addr.arpa. domain name pointer ire-520w122-b-1.net.columbia.edu
[3600] 113.40.39.160.in-addr.arpa. domain name pointer ire-520w122-b-1-ups.net.columbia.edu
[3600] 114.40.39.160.in-addr.arpa. domain name pointer ire-519w121-b-1.net.columbia.edu
[3600] 115.40.39.160.in-addr.arpa. domain name pointer ire-519w121-b-1-ups.net.columbia.edu
[3600] 116.40.39.160.in-addr.arpa. domain name pointer ire-506w122-b-1.net.columbia.edu
[3600] 117.40.39.160.in-addr.arpa. domain name pointer ire-506w122-b-1-ups.net.columbia.edu
[3600] 118.40.39.160.in-addr.arpa. domain name pointer ire-502w122-b-1.net.columbia.edu
[3600] 119.40.39.160.in-addr.arpa. domain name pointer ire-502w122-b-1-ups.net.columbia.edu
[3600] 120.40.39.160.in-addr.arpa. domain name pointer ire-501w121-b-1.net.columbia.edu
[3600] 121.40.39.160.in-addr.arpa. domain name pointer ire-501w121-b-1-ups.net.columbia.edu
[3600] 122.40.39.160.in-addr.arpa. domain name pointer ire-500w122-b-2.net.columbia.edu
[3600] 123.40.39.160.in-addr.arpa. domain name pointer ire-500w122-b-1.net.columbia.edu
[3600] 124.40.39.160.in-addr.arpa. domain name pointer ire-500w122-b-1-ups.net.columbia.edu
[3600] 125.40.39.160.in-addr.arpa. domain name pointer ire-423w120-b-1-ups.net.columbia.edu
[3600] 126.40.39.160.in-addr.arpa. domain name pointer ire-423w120-b-1.net.columbia.edu
[0] 127.40.39.160.in-addr.arpa.: domain name does not exist
[0] 128.40.39.160.in-addr.arpa.: domain name does not exist
[3600] 129.40.39.160.in-addr.arpa. domain name pointer mudd-edge-1-vlan957-1.net.columbia.edu
[0] 130.40.39.160.in-addr.arpa.: domain name does not exist
[0] 131.40.39.160.in-addr.arpa.: domain name does not exist
[0] 132.40.39.160.in-addr.arpa.: domain name does not exist
[0] 133.40.39.160.in-addr.arpa.: domain name does not exist
[0] 134.40.39.160.in-addr.arpa.: domain name does not exist
[0] 135.40.39.160.in-addr.arpa.: domain name does not exist
[0] 136.40.39.160.in-addr.arpa.: domain name does not exist
[0] 137.40.39.160.in-addr.arpa.: domain name does not exist
[0] 138.40.39.160.in-addr.arpa.: domain name does not exist
[3600] 139.40.39.160.in-addr.arpa. domain name pointer edmaldonado.ire.columbia.edu
[3600] 140.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-140.dyn.columbia.edu
[3600] 141.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-141.dyn.columbia.edu
[3600] 142.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-142.dyn.columbia.edu
[3600] 143.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-143.dyn.columbia.edu
[3600] 144.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-144.dyn.columbia.edu
[3600] 145.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-145.dyn.columbia.edu
[3600] 146.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-146.dyn.columbia.edu
[3600] 147.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-147.dyn.columbia.edu
[3600] 148.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-148.dyn.columbia.edu
[3600] 149.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-149.dyn.columbia.edu
[3600] 150.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-150.dyn.columbia.edu
[3600] 151.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-151.dyn.columbia.edu
[3600] 152.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-152.dyn.columbia.edu
[3600] 153.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-153.dyn.columbia.edu
[3600] 154.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-154.dyn.columbia.edu
[3600] 155.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-155.dyn.columbia.edu
[3600] 156.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-156.dyn.columbia.edu
[3600] 157.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-157.dyn.columbia.edu
[3600] 158.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-158.dyn.columbia.edu
[3600] 159.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-159.dyn.columbia.edu
[3600] 160.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-160.dyn.columbia.edu
[3600] 161.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-161.dyn.columbia.edu
[3600] 162.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-162.dyn.columbia.edu
[3600] 163.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-163.dyn.columbia.edu
[3600] 164.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-164.dyn.columbia.edu
[3600] 165.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-165.dyn.columbia.edu
[3600] 166.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-166.dyn.columbia.edu
[3600] 167.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-167.dyn.columbia.edu
[3600] 168.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-168.dyn.columbia.edu
[3600] 169.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-169.dyn.columbia.edu
[3600] 170.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-170.dyn.columbia.edu
[3600] 171.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-171.dyn.columbia.edu
[3600] 172.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-172.dyn.columbia.edu
[3600] 173.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-173.dyn.columbia.edu
[3600] 174.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-174.dyn.columbia.edu
[3600] 175.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-175.dyn.columbia.edu
[3600] 176.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-176.dyn.columbia.edu
[3600] 177.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-177.dyn.columbia.edu
[3600] 178.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-178.dyn.columbia.edu
[3600] 179.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-179.dyn.columbia.edu
[3600] 180.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-180.dyn.columbia.edu
[3600] 181.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-181.dyn.columbia.edu
[3600] 182.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-182.dyn.columbia.edu
[3600] 183.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-183.dyn.columbia.edu
[3600] 184.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-184.dyn.columbia.edu
[3600] 185.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-185.dyn.columbia.edu
[3600] 186.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-186.dyn.columbia.edu
[3600] 187.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-187.dyn.columbia.edu
[3600] 188.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-188.dyn.columbia.edu
[3600] 189.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-189.dyn.columbia.edu
[3600] 190.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-190.dyn.columbia.edu
[3600] 191.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-191.dyn.columbia.edu
[3600] 192.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-192.dyn.columbia.edu
[3600] 193.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-193.dyn.columbia.edu
[3600] 194.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-194.dyn.columbia.edu
[3600] 195.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-195.dyn.columbia.edu
[3600] 196.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-196.dyn.columbia.edu
[3600] 197.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-197.dyn.columbia.edu
[3600] 198.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-198.dyn.columbia.edu
[3600] 199.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-199.dyn.columbia.edu
[3600] 200.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-200.dyn.columbia.edu
[3600] 201.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-201.dyn.columbia.edu
[3600] 202.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-202.dyn.columbia.edu
[3600] 203.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-203.dyn.columbia.edu
[3600] 204.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-204.dyn.columbia.edu
[3600] 205.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-205.dyn.columbia.edu
[3600] 206.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-206.dyn.columbia.edu
[3600] 207.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-207.dyn.columbia.edu
[3600] 208.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-208.dyn.columbia.edu
[3600] 209.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-209.dyn.columbia.edu
[3600] 210.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-210.dyn.columbia.edu
[3600] 211.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-211.dyn.columbia.edu
[3600] 212.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-212.dyn.columbia.edu
[3600] 213.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-213.dyn.columbia.edu
[3600] 214.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-214.dyn.columbia.edu
[3600] 215.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-215.dyn.columbia.edu
[3600] 216.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-216.dyn.columbia.edu
[3600] 217.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-217.dyn.columbia.edu
[3600] 218.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-218.dyn.columbia.edu
[3600] 219.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-219.dyn.columbia.edu
[3600] 220.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-220.dyn.columbia.edu
[3600] 221.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-221.dyn.columbia.edu
[3600] 222.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-222.dyn.columbia.edu
[3600] 223.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-223.dyn.columbia.edu
[3600] 224.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-224.dyn.columbia.edu
[3600] 225.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-225.dyn.columbia.edu
[3600] 226.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-226.dyn.columbia.edu
[3600] 227.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-227.dyn.columbia.edu
[3600] 228.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-228.dyn.columbia.edu
[3600] 229.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-229.dyn.columbia.edu
[3600] 230.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-230.dyn.columbia.edu
[3600] 231.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-231.dyn.columbia.edu
[3600] 232.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-232.dyn.columbia.edu
[3600] 233.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-233.dyn.columbia.edu
[3600] 234.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-234.dyn.columbia.edu
[3600] 235.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-235.dyn.columbia.edu
[3600] 236.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-236.dyn.columbia.edu
[3600] 237.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-237.dyn.columbia.edu
[3600] 238.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-238.dyn.columbia.edu
[3600] 239.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-239.dyn.columbia.edu
[3600] 240.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-240.dyn.columbia.edu
[3600] 241.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-241.dyn.columbia.edu
[3600] 242.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-242.dyn.columbia.edu
[3600] 243.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-243.dyn.columbia.edu
[3600] 244.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-244.dyn.columbia.edu
[3600] 245.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-245.dyn.columbia.edu
[3600] 246.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-246.dyn.columbia.edu
[3600] 247.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-247.dyn.columbia.edu
[3600] 248.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-248.dyn.columbia.edu
[3600] 249.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-249.dyn.columbia.edu
[3600] 250.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-250.dyn.columbia.edu
[3600] 251.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-251.dyn.columbia.edu
[3600] 252.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-252.dyn.columbia.edu
[3600] 253.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-253.dyn.columbia.edu
[3600] 254.40.39.160.in-addr.arpa. domain name pointer dyn-160-39-40-254.dyn.columbia.edu
[0] 255.40.39.160.in-addr.arpa.: domain name does not exist