[0] 0.227.1.81.in-addr.arpa.: domain name does not exist
[0] 1.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 2.227.1.81.in-addr.arpa. domain name pointer trefle.academ.org
[86400] 3.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-3.academ.org
[86400] 4.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-4.academ.org
[86400] 5.227.1.81.in-addr.arpa. domain name pointer forever.academ.org
[86400] 6.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-6.academ.org
[86400] 7.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-7.academ.org
[86400] 8.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-8.academ.org
[0] 9.227.1.81.in-addr.arpa.: domain name does not exist
[0] 10.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 11.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-11.academ.org
[86400] 12.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-12.academ.org
[86400] 13.227.1.81.in-addr.arpa. domain name pointer plasma-nsk.academ.org
[0] 14.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 15.227.1.81.in-addr.arpa. domain name pointer plg.academ.org
[86400] 16.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-16.academ.org
[86400] 17.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-17.academ.org
[0] 18.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 19.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-19.academ.org
[86400] 20.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-20.academ.org
[86400] 21.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-21.academ.org
[86400] 22.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-22.academ.org
[86400] 23.227.1.81.in-addr.arpa. domain name pointer dottedmag.fanstvo.com
[86400] 24.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-24.academ.org
[86400] 25.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-25.academ.org
[86400] 26.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-26.academ.org
[86400] 27.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-27.academ.org
[86400] 28.227.1.81.in-addr.arpa. domain name pointer holdsworth.academ.org
[86400] 29.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-29.academ.org
[86400] 30.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-30.academ.org
[86400] 31.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-31.academ.org
[86400] 32.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-32.academ.org
[86400] 33.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-33.academ.org
[86400] 34.227.1.81.in-addr.arpa. domain name pointer mfu.ru
[86400] 35.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-35.academ.org
[86400] 36.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-36.academ.org
[86400] 37.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-37.academ.org
[86400] 38.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-38.academ.org
[86400] 39.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-39.academ.org
[86400] 40.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-40.academ.org
[86400] 41.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-41.academ.org
[86400] 42.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-42.academ.org
[86400] 43.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-43.academ.org
[86400] 44.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-44.academ.org
[86400] 45.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-45.academ.org
[86400] 46.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-46.academ.org
[86400] 47.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-47.academ.org
[86400] 48.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-48.academ.org
[86400] 49.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-49.academ.org
[86400] 50.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-50.academ.org
[86400] 51.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-51.academ.org
[86400] 52.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-52.academ.org
[86400] 53.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-53.academ.org
[86400] 54.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-54.academ.org
[86400] 55.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-55.academ.org
[86400] 56.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-56.academ.org
[86400] 57.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-57.academ.org
[86400] 58.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-58.academ.org
[86400] 59.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-59.academ.org
[86400] 60.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-60.academ.org
[86400] 61.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-61.academ.org
[86400] 62.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-62.academ.org
[86400] 63.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-63.academ.org
[86400] 64.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-64.academ.org
[86400] 65.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-65.academ.org
[86400] 66.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-66.academ.org
[86400] 67.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-67.academ.org
[86400] 68.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-68.academ.org
[86400] 69.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-69.academ.org
[86400] 70.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-70.academ.org
[86400] 71.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-71.academ.org
[86400] 72.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-72.academ.org
[86400] 73.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-73.academ.org
[86400] 74.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-74.academ.org
[86400] 75.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-75.academ.org
[86400] 76.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-76.academ.org
[86400] 77.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-77.academ.org
[86400] 78.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-78.academ.org
[86400] 79.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-79.academ.org
[86400] 80.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-80.academ.org
[86400] 81.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-81.academ.org
[86400] 82.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-82.academ.org
[86400] 83.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-83.academ.org
[86400] 84.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-84.academ.org
[86400] 85.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-85.academ.org
[86400] 86.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-86.academ.org
[86400] 87.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-87.academ.org
[86400] 88.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-88.academ.org
[86400] 89.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-89.academ.org
[86400] 90.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-90.academ.org
[86400] 91.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-91.academ.org
[86400] 92.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-92.academ.org
[86400] 93.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-93.academ.org
[86400] 94.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-94.academ.org
[86400] 95.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-95.academ.org
[86400] 96.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-96.academ.org
[86400] 97.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-97.academ.org
[86400] 98.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-98.academ.org
[86400] 99.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-99.academ.org
[86400] 100.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-100.academ.org
[86400] 101.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-101.academ.org
[86400] 102.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-102.academ.org
[86400] 103.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-103.academ.org
[86400] 104.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-104.academ.org
[86400] 105.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-105.academ.org
[86400] 106.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-106.academ.org
[86400] 107.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-107.academ.org
[86400] 108.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-108.academ.org
[86400] 109.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-109.academ.org
[86400] 110.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-110.academ.org
[86400] 111.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-111.academ.org
[86400] 112.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-112.academ.org
[86400] 113.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-113.academ.org
[86400] 114.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-114.academ.org
[86400] 115.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-115.academ.org
[86400] 116.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-116.academ.org
[86400] 117.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-117.academ.org
[86400] 118.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-118.academ.org
[86400] 119.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-119.academ.org
[86400] 120.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-120.academ.org
[86400] 121.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-121.academ.org
[86400] 122.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-122.academ.org
[86400] 123.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-123.academ.org
[86400] 124.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-124.academ.org
[86400] 125.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-125.academ.org
[86400] 126.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-126.academ.org
[0] 127.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 128.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-128.academ.org
[86400] 129.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-129.academ.org
[86400] 130.227.1.81.in-addr.arpa. domain name pointer mail.softice.ru
[86400] 131.227.1.81.in-addr.arpa. domain name pointer mail.softice.net
[0] 132.227.1.81.in-addr.arpa.: domain name does not exist
[0] 133.227.1.81.in-addr.arpa.: domain name does not exist
[0] 134.227.1.81.in-addr.arpa.: domain name does not exist
[0] 135.227.1.81.in-addr.arpa.: domain name does not exist
[0] 136.227.1.81.in-addr.arpa.: domain name does not exist
[0] 137.227.1.81.in-addr.arpa.: domain name does not exist
[0] 138.227.1.81.in-addr.arpa.: domain name does not exist
[0] 139.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 140.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-140.academ.org
[86400] 141.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-141.academ.org
[86400] 142.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-142.academ.org
[86400] 143.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-143.academ.org
[0] 144.227.1.81.in-addr.arpa.: domain name does not exist
[0] 145.227.1.81.in-addr.arpa.: domain name does not exist
[0] 146.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 147.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-147.academ.org
[86400] 148.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-148.academ.org
[86400] 149.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-149.academ.org
[86400] 150.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-150.academ.org
[0] 151.227.1.81.in-addr.arpa.: domain name does not exist
[0] 152.227.1.81.in-addr.arpa.: domain name does not exist
[0] 153.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 154.227.1.81.in-addr.arpa. domain name pointer nectar.academ.org
[86400] 155.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-155.academ.org
[86400] 156.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-156.academ.org
[86400] 157.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-157.academ.org
[86400] 158.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-158.academ.org
[0] 159.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 160.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-160.academ.org
[86400] 161.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-161.academ.org
[86400] 162.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-162.academ.org
[86400] 163.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-163.academ.org
[86400] 164.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-164.academ.org
[86400] 165.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-165.academ.org
[86400] 166.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-166.academ.org
[86400] 167.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-167.academ.org
[86400] 168.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-168.academ.org
[86400] 169.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-169.academ.org
[86400] 170.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-170.academ.org
[86400] 171.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-171.academ.org
[86400] 172.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-172.academ.org
[86400] 173.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-173.academ.org
[86400] 174.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-174.academ.org
[86400] 175.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-175.academ.org
[86400] 176.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-176.academ.org
[86400] 177.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-177.academ.org
[86400] 178.227.1.81.in-addr.arpa. domain name pointer mx.trombovazim.com
[86400] 179.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-179.academ.org
[86400] 180.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-180.academ.org
[86400] 181.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-181.academ.org
[86400] 182.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-182.academ.org
[86400] 183.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-183.academ.org
[86400] 184.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-184.academ.org
[86400] 185.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-185.academ.org
[86400] 186.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-186.academ.org
[86400] 187.227.1.81.in-addr.arpa. domain name pointer npk.ru
[86400] 188.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-188.academ.org
[86400] 189.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-189.academ.org
[86400] 190.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-190.academ.org
[86400] 191.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-191.academ.org
[86400] 192.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-192.academ.org
[86400] 193.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-193.academ.org
[86400] 194.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-194.academ.org
[86400] 195.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-195.academ.org
[86400] 196.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-196.academ.org
[86400] 197.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-197.academ.org
[86400] 198.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-198.academ.org
[86400] 199.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-199.academ.org
[86400] 200.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-200.academ.org
[86400] 201.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-201.academ.org
[86400] 202.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-202.academ.org
[86400] 203.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-203.academ.org
[86400] 204.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-204.academ.org
[86400] 205.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-205.academ.org
[86400] 206.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-206.academ.org
[86400] 207.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-207.academ.org
[86400] 208.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-208.academ.org
[86400] 209.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-209.academ.org
[86400] 210.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-210.academ.org
[86400] 211.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-211.academ.org
[86400] 212.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-212.academ.org
[86400] 213.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-213.academ.org
[86400] 214.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-214.academ.org
[0] 215.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 216.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-216.academ.org
[86400] 217.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-217.academ.org
[86400] 218.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-218.academ.org
[86400] 219.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-219.academ.org
[86400] 220.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-220.academ.org
[86400] 221.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-221.academ.org
[86400] 222.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-222.academ.org
[86400] 223.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-223.academ.org
[86400] 224.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-224.academ.org
[86400] 225.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-225.academ.org
[0] 226.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 227.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-227.academ.org
[86400] 228.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-228.academ.org
[86400] 229.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-229.academ.org
[86400] 230.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-230.academ.org
[86400] 231.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-231.academ.org
[0] 232.227.1.81.in-addr.arpa.: domain name does not exist
[0] 233.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 234.227.1.81.in-addr.arpa. domain name pointer vmk.ru
[86400] 235.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-235.academ.org
[86400] 236.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-236.academ.org
[86400] 237.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-237.academ.org
[86400] 238.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-238.academ.org
[0] 239.227.1.81.in-addr.arpa.: domain name does not exist
[0] 240.227.1.81.in-addr.arpa.: domain name does not exist
[0] 241.227.1.81.in-addr.arpa.: domain name does not exist
[0] 242.227.1.81.in-addr.arpa.: domain name does not exist
[0] 243.227.1.81.in-addr.arpa.: domain name does not exist
[0] 244.227.1.81.in-addr.arpa.: domain name does not exist
[0] 245.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 246.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-246.academ.org
[86400] 247.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-247.academ.org
[0] 248.227.1.81.in-addr.arpa.: domain name does not exist
[0] 249.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 250.227.1.81.in-addr.arpa. domain name pointer core1.academ.org
[0] 251.227.1.81.in-addr.arpa.: domain name does not exist
[0] 252.227.1.81.in-addr.arpa.: domain name does not exist
[86400] 253.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-253.academ.org
[86400] 254.227.1.81.in-addr.arpa. domain name pointer host-81-1-227-254.academ.org
[0] 255.227.1.81.in-addr.arpa.: domain name does not exist