[0] 0.50.142.212.in-addr.arpa.: domain name does not exist
[3600] 1.50.142.212.in-addr.arpa. domain name pointer p50001.net.upc.nl
[3600] 2.50.142.212.in-addr.arpa. domain name pointer p50002.net.upc.nl
[3600] 3.50.142.212.in-addr.arpa. domain name pointer p50003.net.upc.nl
[3600] 4.50.142.212.in-addr.arpa. domain name pointer p50004.net.upc.nl
[3600] 5.50.142.212.in-addr.arpa. domain name pointer p50005.net.upc.nl
[3600] 6.50.142.212.in-addr.arpa. domain name pointer p50006.net.upc.nl
[3600] 7.50.142.212.in-addr.arpa. domain name pointer p50007.net.upc.nl
[3600] 8.50.142.212.in-addr.arpa. domain name pointer p50008.net.upc.nl
[3600] 9.50.142.212.in-addr.arpa. domain name pointer p50009.net.upc.nl
[3600] 10.50.142.212.in-addr.arpa. domain name pointer p50010.net.upc.nl
[3600] 11.50.142.212.in-addr.arpa. domain name pointer p50011.net.upc.nl
[3600] 12.50.142.212.in-addr.arpa. domain name pointer p50012.net.upc.nl
[3600] 13.50.142.212.in-addr.arpa. domain name pointer p50013.net.upc.nl
[3600] 14.50.142.212.in-addr.arpa. domain name pointer p50014.net.upc.nl
[3600] 15.50.142.212.in-addr.arpa. domain name pointer p50015.net.upc.nl
[3600] 16.50.142.212.in-addr.arpa. domain name pointer p50016.net.upc.nl
[3600] 17.50.142.212.in-addr.arpa. domain name pointer p50017.net.upc.nl
[3600] 18.50.142.212.in-addr.arpa. domain name pointer p50018.net.upc.nl
[3600] 19.50.142.212.in-addr.arpa. domain name pointer p50019.net.upc.nl
[3600] 20.50.142.212.in-addr.arpa. domain name pointer p50020.net.upc.nl
[3600] 21.50.142.212.in-addr.arpa. domain name pointer p50021.net.upc.nl
[3600] 22.50.142.212.in-addr.arpa. domain name pointer p50022.net.upc.nl
[3600] 23.50.142.212.in-addr.arpa. domain name pointer p50023.net.upc.nl
[3600] 24.50.142.212.in-addr.arpa. domain name pointer p50024.net.upc.nl
[3600] 25.50.142.212.in-addr.arpa. domain name pointer p50025.net.upc.nl
[3600] 26.50.142.212.in-addr.arpa. domain name pointer p50026.net.upc.nl
[3600] 27.50.142.212.in-addr.arpa. domain name pointer p50027.net.upc.nl
[3600] 28.50.142.212.in-addr.arpa. domain name pointer p50028.net.upc.nl
[3600] 29.50.142.212.in-addr.arpa. domain name pointer p50029.net.upc.nl
[3600] 30.50.142.212.in-addr.arpa. domain name pointer p50030.net.upc.nl
[3600] 31.50.142.212.in-addr.arpa. domain name pointer p50031.net.upc.nl
[3600] 32.50.142.212.in-addr.arpa. domain name pointer p50032.net.upc.nl
[3600] 33.50.142.212.in-addr.arpa. domain name pointer p50033.net.upc.nl
[3600] 34.50.142.212.in-addr.arpa. domain name pointer p50034.net.upc.nl
[3600] 35.50.142.212.in-addr.arpa. domain name pointer p50035.net.upc.nl
[3600] 36.50.142.212.in-addr.arpa. domain name pointer p50036.net.upc.nl
[3600] 37.50.142.212.in-addr.arpa. domain name pointer p50037.net.upc.nl
[3600] 38.50.142.212.in-addr.arpa. domain name pointer p50038.net.upc.nl
[3600] 39.50.142.212.in-addr.arpa. domain name pointer p50039.net.upc.nl
[3600] 40.50.142.212.in-addr.arpa. domain name pointer p50040.net.upc.nl
[3600] 41.50.142.212.in-addr.arpa. domain name pointer p50041.net.upc.nl
[3600] 42.50.142.212.in-addr.arpa. domain name pointer p50042.net.upc.nl
[3600] 43.50.142.212.in-addr.arpa. domain name pointer p50043.net.upc.nl
[3600] 44.50.142.212.in-addr.arpa. domain name pointer p50044.net.upc.nl
[3600] 45.50.142.212.in-addr.arpa. domain name pointer p50045.net.upc.nl
[3600] 46.50.142.212.in-addr.arpa. domain name pointer p50046.net.upc.nl
[3600] 47.50.142.212.in-addr.arpa. domain name pointer p50047.net.upc.nl
[3600] 48.50.142.212.in-addr.arpa. domain name pointer p50048.net.upc.nl
[3600] 49.50.142.212.in-addr.arpa. domain name pointer p50049.net.upc.nl
[3600] 50.50.142.212.in-addr.arpa. domain name pointer p50050.net.upc.nl
[3600] 51.50.142.212.in-addr.arpa. domain name pointer p50051.net.upc.nl
[3600] 52.50.142.212.in-addr.arpa. domain name pointer p50052.net.upc.nl
[3600] 53.50.142.212.in-addr.arpa. domain name pointer p50053.net.upc.nl
[3600] 54.50.142.212.in-addr.arpa. domain name pointer p50054.net.upc.nl
[3600] 55.50.142.212.in-addr.arpa. domain name pointer p50055.net.upc.nl
[3600] 56.50.142.212.in-addr.arpa. domain name pointer p50056.net.upc.nl
[3600] 57.50.142.212.in-addr.arpa. domain name pointer p50057.net.upc.nl
[3600] 58.50.142.212.in-addr.arpa. domain name pointer p50058.net.upc.nl
[3600] 59.50.142.212.in-addr.arpa. domain name pointer Rt73cat11.brain.upc.nl
[3600] 60.50.142.212.in-addr.arpa. domain name pointer p50060.net.upc.nl
[3600] 61.50.142.212.in-addr.arpa. domain name pointer p50061.net.upc.nl
[3600] 62.50.142.212.in-addr.arpa. domain name pointer p50062.net.upc.nl
[3600] 63.50.142.212.in-addr.arpa. domain name pointer p50063.net.upc.nl
[3600] 64.50.142.212.in-addr.arpa. domain name pointer p50064.net.upc.nl
[3600] 65.50.142.212.in-addr.arpa. domain name pointer p50065.net.upc.nl
[3600] 66.50.142.212.in-addr.arpa. domain name pointer p50066.net.upc.nl
[3600] 67.50.142.212.in-addr.arpa. domain name pointer p50067.net.upc.nl
[3600] 68.50.142.212.in-addr.arpa. domain name pointer p50068.net.upc.nl
[3600] 69.50.142.212.in-addr.arpa. domain name pointer p50069.net.upc.nl
[3600] 70.50.142.212.in-addr.arpa. domain name pointer p50070.net.upc.nl
[3600] 71.50.142.212.in-addr.arpa. domain name pointer p50071.net.upc.nl
[3600] 72.50.142.212.in-addr.arpa. domain name pointer p50072.net.upc.nl
[3600] 73.50.142.212.in-addr.arpa. domain name pointer p50073.net.upc.nl
[3600] 74.50.142.212.in-addr.arpa. domain name pointer p50074.net.upc.nl
[3600] 75.50.142.212.in-addr.arpa. domain name pointer p50075.net.upc.nl
[3600] 76.50.142.212.in-addr.arpa. domain name pointer p50076.net.upc.nl
[3600] 77.50.142.212.in-addr.arpa. domain name pointer p50077.net.upc.nl
[3600] 78.50.142.212.in-addr.arpa. domain name pointer p50078.net.upc.nl
[3600] 79.50.142.212.in-addr.arpa. domain name pointer p50079.net.upc.nl
[3600] 80.50.142.212.in-addr.arpa. domain name pointer p50080.net.upc.nl
[3600] 81.50.142.212.in-addr.arpa. domain name pointer p50081.net.upc.nl
[3600] 82.50.142.212.in-addr.arpa. domain name pointer p50082.net.upc.nl
[3600] 83.50.142.212.in-addr.arpa. domain name pointer p50083.net.upc.nl
[3600] 84.50.142.212.in-addr.arpa. domain name pointer p50084.net.upc.nl
[3600] 85.50.142.212.in-addr.arpa. domain name pointer p50085.net.upc.nl
[3600] 86.50.142.212.in-addr.arpa. domain name pointer p50086.net.upc.nl
[3600] 87.50.142.212.in-addr.arpa. domain name pointer p50087.net.upc.nl
[3600] 88.50.142.212.in-addr.arpa. domain name pointer p50088.net.upc.nl
[3600] 89.50.142.212.in-addr.arpa. domain name pointer p50089.net.upc.nl
[3600] 90.50.142.212.in-addr.arpa. domain name pointer Rt72cat11.brain.upc.nl
[3600] 91.50.142.212.in-addr.arpa. domain name pointer p50091.net.upc.nl
[3600] 92.50.142.212.in-addr.arpa. domain name pointer p50092.net.upc.nl
[3600] 93.50.142.212.in-addr.arpa. domain name pointer p50093.net.upc.nl
[3600] 94.50.142.212.in-addr.arpa. domain name pointer p50094.net.upc.nl
[3600] 95.50.142.212.in-addr.arpa. domain name pointer p50095.net.upc.nl
[3600] 96.50.142.212.in-addr.arpa. domain name pointer p50096.net.upc.nl
[3600] 97.50.142.212.in-addr.arpa. domain name pointer p50097.net.upc.nl
[3600] 98.50.142.212.in-addr.arpa. domain name pointer p50098.net.upc.nl
[3600] 99.50.142.212.in-addr.arpa. domain name pointer p50099.net.upc.nl
[3600] 100.50.142.212.in-addr.arpa. domain name pointer p50100.net.upc.nl
[3600] 101.50.142.212.in-addr.arpa. domain name pointer p50101.net.upc.nl
[3600] 102.50.142.212.in-addr.arpa. domain name pointer p50102.net.upc.nl
[3600] 103.50.142.212.in-addr.arpa. domain name pointer p50103.net.upc.nl
[3600] 104.50.142.212.in-addr.arpa. domain name pointer p50104.net.upc.nl
[3600] 105.50.142.212.in-addr.arpa. domain name pointer p50105.net.upc.nl
[3600] 106.50.142.212.in-addr.arpa. domain name pointer p50106.net.upc.nl
[3600] 107.50.142.212.in-addr.arpa. domain name pointer p50107.net.upc.nl
[3600] 108.50.142.212.in-addr.arpa. domain name pointer p50108.net.upc.nl
[3600] 109.50.142.212.in-addr.arpa. domain name pointer p50109.net.upc.nl
[3600] 110.50.142.212.in-addr.arpa. domain name pointer p50110.net.upc.nl
[3600] 111.50.142.212.in-addr.arpa. domain name pointer p50111.net.upc.nl
[3600] 112.50.142.212.in-addr.arpa. domain name pointer p50112.net.upc.nl
[3600] 113.50.142.212.in-addr.arpa. domain name pointer p50113.net.upc.nl
[3600] 114.50.142.212.in-addr.arpa. domain name pointer p50114.net.upc.nl
[3600] 115.50.142.212.in-addr.arpa. domain name pointer p50115.net.upc.nl
[3600] 116.50.142.212.in-addr.arpa. domain name pointer p50116.net.upc.nl
[3600] 117.50.142.212.in-addr.arpa. domain name pointer p50117.net.upc.nl
[3600] 118.50.142.212.in-addr.arpa. domain name pointer p50118.net.upc.nl
[3600] 119.50.142.212.in-addr.arpa. domain name pointer p50119.net.upc.nl
[3600] 120.50.142.212.in-addr.arpa. domain name pointer p50120.net.upc.nl
[3600] 121.50.142.212.in-addr.arpa. domain name pointer p50121.net.upc.nl
[3600] 122.50.142.212.in-addr.arpa. domain name pointer p50122.net.upc.nl
[3600] 123.50.142.212.in-addr.arpa. domain name pointer p50123.net.upc.nl
[3600] 124.50.142.212.in-addr.arpa. domain name pointer p50124.net.upc.nl
[3600] 125.50.142.212.in-addr.arpa. domain name pointer p50125.net.upc.nl
[3600] 126.50.142.212.in-addr.arpa. domain name pointer p50126.net.upc.nl
[3600] 127.50.142.212.in-addr.arpa. domain name pointer p50127.net.upc.nl
[3600] 128.50.142.212.in-addr.arpa. domain name pointer p50128.net.upc.nl
[3600] 129.50.142.212.in-addr.arpa. domain name pointer p50129.net.upc.nl
[3600] 130.50.142.212.in-addr.arpa. domain name pointer p50130.net.upc.nl
[3600] 131.50.142.212.in-addr.arpa. domain name pointer p50131.net.upc.nl
[3600] 132.50.142.212.in-addr.arpa. domain name pointer p50132.net.upc.nl
[3600] 133.50.142.212.in-addr.arpa. domain name pointer p50133.net.upc.nl
[3600] 134.50.142.212.in-addr.arpa. domain name pointer p50134.net.upc.nl
[3600] 135.50.142.212.in-addr.arpa. domain name pointer p50135.net.upc.nl
[3600] 136.50.142.212.in-addr.arpa. domain name pointer p50136.net.upc.nl
[3600] 137.50.142.212.in-addr.arpa. domain name pointer p50137.net.upc.nl
[3600] 138.50.142.212.in-addr.arpa. domain name pointer p50138.net.upc.nl
[3600] 139.50.142.212.in-addr.arpa. domain name pointer p50139.net.upc.nl
[3600] 140.50.142.212.in-addr.arpa. domain name pointer p50140.net.upc.nl
[3600] 141.50.142.212.in-addr.arpa. domain name pointer p50141.net.upc.nl
[3600] 142.50.142.212.in-addr.arpa. domain name pointer p50142.net.upc.nl
[3600] 143.50.142.212.in-addr.arpa. domain name pointer p50143.net.upc.nl
[3600] 144.50.142.212.in-addr.arpa. domain name pointer p50144.net.upc.nl
[3600] 145.50.142.212.in-addr.arpa. domain name pointer p50145.net.upc.nl
[3600] 146.50.142.212.in-addr.arpa. domain name pointer p50146.net.upc.nl
[3600] 147.50.142.212.in-addr.arpa. domain name pointer p50147.net.upc.nl
[3600] 148.50.142.212.in-addr.arpa. domain name pointer p50148.net.upc.nl
[3600] 149.50.142.212.in-addr.arpa. domain name pointer p50149.net.upc.nl
[3600] 150.50.142.212.in-addr.arpa. domain name pointer p50150.net.upc.nl
[3600] 151.50.142.212.in-addr.arpa. domain name pointer p50151.net.upc.nl
[3600] 152.50.142.212.in-addr.arpa. domain name pointer p50152.net.upc.nl
[3600] 153.50.142.212.in-addr.arpa. domain name pointer p50153.net.upc.nl
[3600] 154.50.142.212.in-addr.arpa. domain name pointer Rt73cat12.brain.upc.nl
[3600] 155.50.142.212.in-addr.arpa. domain name pointer p50155.net.upc.nl
[3600] 156.50.142.212.in-addr.arpa. domain name pointer p50156.net.upc.nl
[3600] 157.50.142.212.in-addr.arpa. domain name pointer p50157.net.upc.nl
[3600] 158.50.142.212.in-addr.arpa. domain name pointer p50158.net.upc.nl
[3600] 159.50.142.212.in-addr.arpa. domain name pointer p50159.net.upc.nl
[3600] 160.50.142.212.in-addr.arpa. domain name pointer p50160.net.upc.nl
[3600] 161.50.142.212.in-addr.arpa. domain name pointer p50161.net.upc.nl
[3600] 162.50.142.212.in-addr.arpa. domain name pointer p50162.net.upc.nl
[3600] 163.50.142.212.in-addr.arpa. domain name pointer p50163.net.upc.nl
[3600] 164.50.142.212.in-addr.arpa. domain name pointer p50164.net.upc.nl
[3600] 165.50.142.212.in-addr.arpa. domain name pointer p50165.net.upc.nl
[3600] 166.50.142.212.in-addr.arpa. domain name pointer p50166.net.upc.nl
[3600] 167.50.142.212.in-addr.arpa. domain name pointer p50167.net.upc.nl
[3600] 168.50.142.212.in-addr.arpa. domain name pointer p50168.net.upc.nl
[3600] 169.50.142.212.in-addr.arpa. domain name pointer p50169.net.upc.nl
[3600] 170.50.142.212.in-addr.arpa. domain name pointer p50170.net.upc.nl
[3600] 171.50.142.212.in-addr.arpa. domain name pointer p50171.net.upc.nl
[3600] 172.50.142.212.in-addr.arpa. domain name pointer p50172.net.upc.nl
[3600] 173.50.142.212.in-addr.arpa. domain name pointer p50173.net.upc.nl
[3600] 174.50.142.212.in-addr.arpa. domain name pointer p50174.net.upc.nl
[3600] 175.50.142.212.in-addr.arpa. domain name pointer p50175.net.upc.nl
[3600] 176.50.142.212.in-addr.arpa. domain name pointer p50176.net.upc.nl
[3600] 177.50.142.212.in-addr.arpa. domain name pointer p50177.net.upc.nl
[3600] 178.50.142.212.in-addr.arpa. domain name pointer p50178.net.upc.nl
[3600] 179.50.142.212.in-addr.arpa. domain name pointer p50179.net.upc.nl
[3600] 180.50.142.212.in-addr.arpa. domain name pointer p50180.net.upc.nl
[3600] 181.50.142.212.in-addr.arpa. domain name pointer p50181.net.upc.nl
[3600] 182.50.142.212.in-addr.arpa. domain name pointer p50182.net.upc.nl
[3600] 183.50.142.212.in-addr.arpa. domain name pointer p50183.net.upc.nl
[3600] 184.50.142.212.in-addr.arpa. domain name pointer p50184.net.upc.nl
[3600] 185.50.142.212.in-addr.arpa. domain name pointer p50185.net.upc.nl
[3600] 186.50.142.212.in-addr.arpa. domain name pointer Rt72cat12.brain.upc.nl p50186.net.upc.nl
[3600] 187.50.142.212.in-addr.arpa. domain name pointer p50187.net.upc.nl
[3600] 188.50.142.212.in-addr.arpa. domain name pointer p50188.net.upc.nl
[3600] 189.50.142.212.in-addr.arpa. domain name pointer p50189.net.upc.nl
[3600] 190.50.142.212.in-addr.arpa. domain name pointer p50190.net.upc.nl
[3600] 191.50.142.212.in-addr.arpa. domain name pointer p50191.net.upc.nl
[3600] 192.50.142.212.in-addr.arpa. domain name pointer p50192.net.upc.nl
[3600] 193.50.142.212.in-addr.arpa. domain name pointer p50193.net.upc.nl
[3600] 194.50.142.212.in-addr.arpa. domain name pointer p50194.net.upc.nl
[3600] 195.50.142.212.in-addr.arpa. domain name pointer p50195.net.upc.nl
[3600] 196.50.142.212.in-addr.arpa. domain name pointer p50196.net.upc.nl
[3600] 197.50.142.212.in-addr.arpa. domain name pointer p50197.net.upc.nl
[3600] 198.50.142.212.in-addr.arpa. domain name pointer p50198.net.upc.nl
[3600] 199.50.142.212.in-addr.arpa. domain name pointer p50199.net.upc.nl
[3600] 200.50.142.212.in-addr.arpa. domain name pointer p50200.net.upc.nl
[3600] 201.50.142.212.in-addr.arpa. domain name pointer p50201.net.upc.nl
[3600] 202.50.142.212.in-addr.arpa. domain name pointer p50202.net.upc.nl
[3600] 203.50.142.212.in-addr.arpa. domain name pointer p50203.net.upc.nl
[3600] 204.50.142.212.in-addr.arpa. domain name pointer p50204.net.upc.nl
[3600] 205.50.142.212.in-addr.arpa. domain name pointer p50205.net.upc.nl
[3600] 206.50.142.212.in-addr.arpa. domain name pointer p50206.net.upc.nl
[3600] 207.50.142.212.in-addr.arpa. domain name pointer p50207.net.upc.nl
[3600] 208.50.142.212.in-addr.arpa. domain name pointer p50208.net.upc.nl
[3600] 209.50.142.212.in-addr.arpa. domain name pointer p50209.net.upc.nl
[3600] 210.50.142.212.in-addr.arpa. domain name pointer p50210.net.upc.nl
[3600] 211.50.142.212.in-addr.arpa. domain name pointer p50211.net.upc.nl
[3600] 212.50.142.212.in-addr.arpa. domain name pointer p50212.net.upc.nl
[3600] 213.50.142.212.in-addr.arpa. domain name pointer p50213.net.upc.nl
[3600] 214.50.142.212.in-addr.arpa. domain name pointer p50214.net.upc.nl
[3600] 215.50.142.212.in-addr.arpa. domain name pointer p50215.net.upc.nl
[3600] 216.50.142.212.in-addr.arpa. domain name pointer p50216.net.upc.nl
[3600] 217.50.142.212.in-addr.arpa. domain name pointer p50217.net.upc.nl
[3600] 218.50.142.212.in-addr.arpa. domain name pointer p50218.net.upc.nl
[3600] 219.50.142.212.in-addr.arpa. domain name pointer p50219.net.upc.nl
[3600] 220.50.142.212.in-addr.arpa. domain name pointer p50220.net.upc.nl
[3600] 221.50.142.212.in-addr.arpa. domain name pointer p50221.net.upc.nl
[3600] 222.50.142.212.in-addr.arpa. domain name pointer p50222.net.upc.nl
[3600] 223.50.142.212.in-addr.arpa. domain name pointer p50223.net.upc.nl
[3600] 224.50.142.212.in-addr.arpa. domain name pointer p50224.net.upc.nl
[3600] 225.50.142.212.in-addr.arpa. domain name pointer p50225.net.upc.nl
[3600] 226.50.142.212.in-addr.arpa. domain name pointer p50226.net.upc.nl
[3600] 227.50.142.212.in-addr.arpa. domain name pointer p50227.net.upc.nl
[3600] 228.50.142.212.in-addr.arpa. domain name pointer p50228.net.upc.nl
[3600] 229.50.142.212.in-addr.arpa. domain name pointer p50229.net.upc.nl
[3600] 230.50.142.212.in-addr.arpa. domain name pointer p50230.net.upc.nl
[3600] 231.50.142.212.in-addr.arpa. domain name pointer p50231.net.upc.nl
[3600] 232.50.142.212.in-addr.arpa. domain name pointer p50232.net.upc.nl
[3600] 233.50.142.212.in-addr.arpa. domain name pointer p50233.net.upc.nl
[3600] 234.50.142.212.in-addr.arpa. domain name pointer p50234.net.upc.nl
[3600] 235.50.142.212.in-addr.arpa. domain name pointer p50235.net.upc.nl
[3600] 236.50.142.212.in-addr.arpa. domain name pointer p50236.net.upc.nl
[3600] 237.50.142.212.in-addr.arpa. domain name pointer p50237.net.upc.nl
[3600] 238.50.142.212.in-addr.arpa. domain name pointer p50238.net.upc.nl
[3600] 239.50.142.212.in-addr.arpa. domain name pointer p50239.net.upc.nl
[3600] 240.50.142.212.in-addr.arpa. domain name pointer p50240.net.upc.nl
[3600] 241.50.142.212.in-addr.arpa. domain name pointer p50241.net.upc.nl
[3600] 242.50.142.212.in-addr.arpa. domain name pointer p50242.net.upc.nl
[3600] 243.50.142.212.in-addr.arpa. domain name pointer p50243.net.upc.nl
[3600] 244.50.142.212.in-addr.arpa. domain name pointer p50244.net.upc.nl
[3600] 245.50.142.212.in-addr.arpa. domain name pointer p50245.net.upc.nl
[3600] 246.50.142.212.in-addr.arpa. domain name pointer p50246.net.upc.nl
[3600] 247.50.142.212.in-addr.arpa. domain name pointer p50247.net.upc.nl
[3600] 248.50.142.212.in-addr.arpa. domain name pointer p50248.net.upc.nl
[3600] 249.50.142.212.in-addr.arpa. domain name pointer p50249.net.upc.nl
[3600] 250.50.142.212.in-addr.arpa. domain name pointer p50250.net.upc.nl
[3600] 251.50.142.212.in-addr.arpa. domain name pointer p50251.net.upc.nl
[3600] 252.50.142.212.in-addr.arpa. domain name pointer p50252.net.upc.nl
[3600] 253.50.142.212.in-addr.arpa. domain name pointer p50253.net.upc.nl
[3600] 254.50.142.212.in-addr.arpa. domain name pointer p50254.net.upc.nl
[0] 255.50.142.212.in-addr.arpa.: domain name does not exist