[0] 0.233.7.64.in-addr.arpa.: domain name does not exist
[86400] 1.233.7.64.in-addr.arpa. domain name pointer dc2-001.du.netease.net
[86400] 2.233.7.64.in-addr.arpa. domain name pointer dc2-002.du.netease.net
[86400] 3.233.7.64.in-addr.arpa. domain name pointer dc2-003.du.netease.net
[86400] 4.233.7.64.in-addr.arpa. domain name pointer dc2-004.du.netease.net
[86400] 5.233.7.64.in-addr.arpa. domain name pointer dc2-005.du.netease.net
[86400] 6.233.7.64.in-addr.arpa. domain name pointer dc2-006.du.netease.net
[86400] 7.233.7.64.in-addr.arpa. domain name pointer dc2-007.du.netease.net
[86400] 8.233.7.64.in-addr.arpa. domain name pointer dc2-008.du.netease.net
[86400] 9.233.7.64.in-addr.arpa. domain name pointer dc2-009.du.netease.net
[86400] 10.233.7.64.in-addr.arpa. domain name pointer dc2-010.du.netease.net
[86400] 11.233.7.64.in-addr.arpa. domain name pointer dc2-011.du.netease.net
[86400] 12.233.7.64.in-addr.arpa. domain name pointer dc2-012.du.netease.net
[86400] 13.233.7.64.in-addr.arpa. domain name pointer dc2-013.du.netease.net
[86400] 14.233.7.64.in-addr.arpa. domain name pointer dc2-014.du.netease.net
[86400] 15.233.7.64.in-addr.arpa. domain name pointer dc2-015.du.netease.net
[86400] 16.233.7.64.in-addr.arpa. domain name pointer dc2-016.du.netease.net
[86400] 17.233.7.64.in-addr.arpa. domain name pointer dc2-017.du.netease.net
[86400] 18.233.7.64.in-addr.arpa. domain name pointer dc2-018.du.netease.net
[86400] 19.233.7.64.in-addr.arpa. domain name pointer dc2-019.du.netease.net
[86400] 20.233.7.64.in-addr.arpa. domain name pointer dc2-020.du.netease.net
[86400] 21.233.7.64.in-addr.arpa. domain name pointer dc2-021.du.netease.net
[86400] 22.233.7.64.in-addr.arpa. domain name pointer dc2-022.du.netease.net
[86400] 23.233.7.64.in-addr.arpa. domain name pointer dc2-023.du.netease.net
[86400] 24.233.7.64.in-addr.arpa. domain name pointer dc2-024.du.netease.net
[86400] 25.233.7.64.in-addr.arpa. domain name pointer dc2-025.du.netease.net
[86400] 26.233.7.64.in-addr.arpa. domain name pointer dc2-026.du.netease.net
[86400] 27.233.7.64.in-addr.arpa. domain name pointer dc2-027.du.netease.net
[86400] 28.233.7.64.in-addr.arpa. domain name pointer dc2-028.du.netease.net
[86400] 29.233.7.64.in-addr.arpa. domain name pointer dc2-029.du.netease.net
[86400] 30.233.7.64.in-addr.arpa. domain name pointer dc2-030.du.netease.net
[86400] 31.233.7.64.in-addr.arpa. domain name pointer dc2-031.du.netease.net
[86400] 32.233.7.64.in-addr.arpa. domain name pointer dc2-032.du.netease.net
[86400] 33.233.7.64.in-addr.arpa. domain name pointer dc2-033.du.netease.net
[86400] 34.233.7.64.in-addr.arpa. domain name pointer dc2-034.du.netease.net
[86400] 35.233.7.64.in-addr.arpa. domain name pointer dc2-035.du.netease.net
[86400] 36.233.7.64.in-addr.arpa. domain name pointer dc2-036.du.netease.net
[86400] 37.233.7.64.in-addr.arpa. domain name pointer dc2-037.du.netease.net
[86400] 38.233.7.64.in-addr.arpa. domain name pointer dc2-038.du.netease.net
[86400] 39.233.7.64.in-addr.arpa. domain name pointer dc2-039.du.netease.net
[86400] 40.233.7.64.in-addr.arpa. domain name pointer dc2-040.du.netease.net
[86400] 41.233.7.64.in-addr.arpa. domain name pointer dc2-041.du.netease.net
[86400] 42.233.7.64.in-addr.arpa. domain name pointer dc2-042.du.netease.net
[86400] 43.233.7.64.in-addr.arpa. domain name pointer dc2-043.du.netease.net
[86400] 44.233.7.64.in-addr.arpa. domain name pointer dc2-044.du.netease.net
[86400] 45.233.7.64.in-addr.arpa. domain name pointer dc2-045.du.netease.net
[86400] 46.233.7.64.in-addr.arpa. domain name pointer dc2-046.du.netease.net
[86400] 47.233.7.64.in-addr.arpa. domain name pointer dc2-047.du.netease.net
[86400] 48.233.7.64.in-addr.arpa. domain name pointer dc2-048.du.netease.net
[86400] 49.233.7.64.in-addr.arpa. domain name pointer dc2-049.du.netease.net
[86400] 50.233.7.64.in-addr.arpa. domain name pointer dc2-050.du.netease.net
[86400] 51.233.7.64.in-addr.arpa. domain name pointer dc2-051.du.netease.net
[86400] 52.233.7.64.in-addr.arpa. domain name pointer dc2-052.du.netease.net
[86400] 53.233.7.64.in-addr.arpa. domain name pointer dc2-053.du.netease.net
[86400] 54.233.7.64.in-addr.arpa. domain name pointer dc2-054.du.netease.net
[86400] 55.233.7.64.in-addr.arpa. domain name pointer dc2-055.du.netease.net
[86400] 56.233.7.64.in-addr.arpa. domain name pointer dc2-056.du.netease.net
[86400] 57.233.7.64.in-addr.arpa. domain name pointer dc2-057.du.netease.net
[86400] 58.233.7.64.in-addr.arpa. domain name pointer dc2-058.du.netease.net
[86400] 59.233.7.64.in-addr.arpa. domain name pointer dc2-059.du.netease.net
[86400] 60.233.7.64.in-addr.arpa. domain name pointer dc2-060.du.netease.net
[86400] 61.233.7.64.in-addr.arpa. domain name pointer dc2-061.du.netease.net
[86400] 62.233.7.64.in-addr.arpa. domain name pointer dc2-062.du.netease.net
[86400] 63.233.7.64.in-addr.arpa. domain name pointer dc2-063.du.netease.net
[86400] 64.233.7.64.in-addr.arpa. domain name pointer dc2-064.du.netease.net
[86400] 65.233.7.64.in-addr.arpa. domain name pointer dc2-065.du.netease.net
[86400] 66.233.7.64.in-addr.arpa. domain name pointer dc2-066.du.netease.net
[86400] 67.233.7.64.in-addr.arpa. domain name pointer dc2-067.du.netease.net
[86400] 68.233.7.64.in-addr.arpa. domain name pointer dc2-068.du.netease.net
[86400] 69.233.7.64.in-addr.arpa. domain name pointer dc2-069.du.netease.net
[86400] 70.233.7.64.in-addr.arpa. domain name pointer dc2-070.du.netease.net
[86400] 71.233.7.64.in-addr.arpa. domain name pointer dc2-071.du.netease.net
[86400] 72.233.7.64.in-addr.arpa. domain name pointer dc2-072.du.netease.net
[86400] 73.233.7.64.in-addr.arpa. domain name pointer dc2-073.du.netease.net
[86400] 74.233.7.64.in-addr.arpa. domain name pointer dc2-074.du.netease.net
[86400] 75.233.7.64.in-addr.arpa. domain name pointer dc2-075.du.netease.net
[86400] 76.233.7.64.in-addr.arpa. domain name pointer dc2-076.du.netease.net
[86400] 77.233.7.64.in-addr.arpa. domain name pointer dc2-077.du.netease.net
[86400] 78.233.7.64.in-addr.arpa. domain name pointer dc2-078.du.netease.net
[86400] 79.233.7.64.in-addr.arpa. domain name pointer dc2-079.du.netease.net
[86400] 80.233.7.64.in-addr.arpa. domain name pointer dc2-080.du.netease.net
[86400] 81.233.7.64.in-addr.arpa. domain name pointer dc2-081.du.netease.net
[86400] 82.233.7.64.in-addr.arpa. domain name pointer dc2-082.du.netease.net
[86400] 83.233.7.64.in-addr.arpa. domain name pointer dc2-083.du.netease.net
[86400] 84.233.7.64.in-addr.arpa. domain name pointer dc2-084.du.netease.net
[86400] 85.233.7.64.in-addr.arpa. domain name pointer dc2-085.du.netease.net
[86400] 86.233.7.64.in-addr.arpa. domain name pointer dc2-086.du.netease.net
[86400] 87.233.7.64.in-addr.arpa. domain name pointer dc2-087.du.netease.net
[86400] 88.233.7.64.in-addr.arpa. domain name pointer dc2-088.du.netease.net
[86400] 89.233.7.64.in-addr.arpa. domain name pointer dc2-089.du.netease.net
[86400] 90.233.7.64.in-addr.arpa. domain name pointer dc2-090.du.netease.net
[86400] 91.233.7.64.in-addr.arpa. domain name pointer dc2-091.du.netease.net
[86400] 92.233.7.64.in-addr.arpa. domain name pointer dc2-092.du.netease.net
[86400] 93.233.7.64.in-addr.arpa. domain name pointer dc2-093.du.netease.net
[86400] 94.233.7.64.in-addr.arpa. domain name pointer dc2-094.du.netease.net
[86400] 95.233.7.64.in-addr.arpa. domain name pointer dc2-095.du.netease.net
[86400] 96.233.7.64.in-addr.arpa. domain name pointer dc2-096.du.netease.net
[86400] 97.233.7.64.in-addr.arpa. domain name pointer dc2-097.du.netease.net
[86400] 98.233.7.64.in-addr.arpa. domain name pointer dc2-098.du.netease.net
[86400] 99.233.7.64.in-addr.arpa. domain name pointer dc2-099.du.netease.net
[86400] 100.233.7.64.in-addr.arpa. domain name pointer dc2-100.du.netease.net
[86400] 101.233.7.64.in-addr.arpa. domain name pointer dc2-101.du.netease.net
[86400] 102.233.7.64.in-addr.arpa. domain name pointer dc2-102.du.netease.net
[86400] 103.233.7.64.in-addr.arpa. domain name pointer dc2-103.du.netease.net
[86400] 104.233.7.64.in-addr.arpa. domain name pointer dc2-104.du.netease.net
[86400] 105.233.7.64.in-addr.arpa. domain name pointer dc2-105.du.netease.net
[86400] 106.233.7.64.in-addr.arpa. domain name pointer dc2-106.du.netease.net
[86400] 107.233.7.64.in-addr.arpa. domain name pointer dc2-107.du.netease.net
[86400] 108.233.7.64.in-addr.arpa. domain name pointer dc2-108.du.netease.net
[86400] 109.233.7.64.in-addr.arpa. domain name pointer dc2-109.du.netease.net
[86400] 110.233.7.64.in-addr.arpa. domain name pointer dc2-110.du.netease.net
[86400] 111.233.7.64.in-addr.arpa. domain name pointer dc2-111.du.netease.net
[86400] 112.233.7.64.in-addr.arpa. domain name pointer dc2-112.du.netease.net
[86400] 113.233.7.64.in-addr.arpa. domain name pointer dc2-113.du.netease.net
[86400] 114.233.7.64.in-addr.arpa. domain name pointer dc2-114.du.netease.net
[86400] 115.233.7.64.in-addr.arpa. domain name pointer dc2-115.du.netease.net
[86400] 116.233.7.64.in-addr.arpa. domain name pointer dc2-116.du.netease.net
[86400] 117.233.7.64.in-addr.arpa. domain name pointer dc2-117.du.netease.net
[86400] 118.233.7.64.in-addr.arpa. domain name pointer dc2-118.du.netease.net
[86400] 119.233.7.64.in-addr.arpa. domain name pointer dc2-119.du.netease.net
[86400] 120.233.7.64.in-addr.arpa. domain name pointer dc2-120.du.netease.net
[86400] 121.233.7.64.in-addr.arpa. domain name pointer dc2-121.du.netease.net
[86400] 122.233.7.64.in-addr.arpa. domain name pointer dc2-122.du.netease.net
[86400] 123.233.7.64.in-addr.arpa. domain name pointer dc2-123.du.netease.net
[86400] 124.233.7.64.in-addr.arpa. domain name pointer dc2-124.du.netease.net
[86400] 125.233.7.64.in-addr.arpa. domain name pointer dc2-125.du.netease.net
[86400] 126.233.7.64.in-addr.arpa. domain name pointer dc2-126.du.netease.net
[0] 127.233.7.64.in-addr.arpa.: domain name does not exist
[0] 128.233.7.64.in-addr.arpa.: domain name does not exist
[86400] 129.233.7.64.in-addr.arpa. domain name pointer dc1-001.du.netease.net
[86400] 130.233.7.64.in-addr.arpa. domain name pointer dc1-002.du.netease.net
[86400] 131.233.7.64.in-addr.arpa. domain name pointer dc1-003.du.netease.net
[86400] 132.233.7.64.in-addr.arpa. domain name pointer dc1-004.du.netease.net
[86400] 133.233.7.64.in-addr.arpa. domain name pointer dc1-005.du.netease.net
[86400] 134.233.7.64.in-addr.arpa. domain name pointer dc1-006.du.netease.net
[86400] 135.233.7.64.in-addr.arpa. domain name pointer dc1-007.du.netease.net
[86400] 136.233.7.64.in-addr.arpa. domain name pointer dc1-008.du.netease.net
[86400] 137.233.7.64.in-addr.arpa. domain name pointer dc1-009.du.netease.net
[86400] 138.233.7.64.in-addr.arpa. domain name pointer dc1-010.du.netease.net
[86400] 139.233.7.64.in-addr.arpa. domain name pointer dc1-011.du.netease.net
[86400] 140.233.7.64.in-addr.arpa. domain name pointer dc1-012.du.netease.net
[86400] 141.233.7.64.in-addr.arpa. domain name pointer dc1-013.du.netease.net
[86400] 142.233.7.64.in-addr.arpa. domain name pointer dc1-014.du.netease.net
[86400] 143.233.7.64.in-addr.arpa. domain name pointer dc1-015.du.netease.net
[86400] 144.233.7.64.in-addr.arpa. domain name pointer dc1-016.du.netease.net
[86400] 145.233.7.64.in-addr.arpa. domain name pointer dc1-017.du.netease.net
[86400] 146.233.7.64.in-addr.arpa. domain name pointer dc1-018.du.netease.net
[86400] 147.233.7.64.in-addr.arpa. domain name pointer dc1-019.du.netease.net
[86400] 148.233.7.64.in-addr.arpa. domain name pointer dc1-020.du.netease.net
[86400] 149.233.7.64.in-addr.arpa. domain name pointer dc1-021.du.netease.net
[86400] 150.233.7.64.in-addr.arpa. domain name pointer dc1-022.du.netease.net
[86400] 151.233.7.64.in-addr.arpa. domain name pointer dc1-023.du.netease.net
[86400] 152.233.7.64.in-addr.arpa. domain name pointer dc1-024.du.netease.net
[86400] 153.233.7.64.in-addr.arpa. domain name pointer dc1-025.du.netease.net
[86400] 154.233.7.64.in-addr.arpa. domain name pointer dc1-026.du.netease.net
[86400] 155.233.7.64.in-addr.arpa. domain name pointer dc1-027.du.netease.net
[86400] 156.233.7.64.in-addr.arpa. domain name pointer dc1-028.du.netease.net
[86400] 157.233.7.64.in-addr.arpa. domain name pointer dc1-029.du.netease.net
[86400] 158.233.7.64.in-addr.arpa. domain name pointer dc1-030.du.netease.net
[86400] 159.233.7.64.in-addr.arpa. domain name pointer dc1-031.du.netease.net
[86400] 160.233.7.64.in-addr.arpa. domain name pointer dc1-032.du.netease.net
[86400] 161.233.7.64.in-addr.arpa. domain name pointer dc1-033.du.netease.net
[86400] 162.233.7.64.in-addr.arpa. domain name pointer dc1-034.du.netease.net
[86400] 163.233.7.64.in-addr.arpa. domain name pointer dc1-035.du.netease.net
[86400] 164.233.7.64.in-addr.arpa. domain name pointer dc1-036.du.netease.net
[86400] 165.233.7.64.in-addr.arpa. domain name pointer dc1-037.du.netease.net
[86400] 166.233.7.64.in-addr.arpa. domain name pointer dc1-038.du.netease.net
[86400] 167.233.7.64.in-addr.arpa. domain name pointer dc1-039.du.netease.net
[86400] 168.233.7.64.in-addr.arpa. domain name pointer dc1-040.du.netease.net
[86400] 169.233.7.64.in-addr.arpa. domain name pointer dc1-041.du.netease.net
[86400] 170.233.7.64.in-addr.arpa. domain name pointer dc1-042.du.netease.net
[86400] 171.233.7.64.in-addr.arpa. domain name pointer dc1-043.du.netease.net
[86400] 172.233.7.64.in-addr.arpa. domain name pointer dc1-044.du.netease.net
[86400] 173.233.7.64.in-addr.arpa. domain name pointer dc1-045.du.netease.net
[86400] 174.233.7.64.in-addr.arpa. domain name pointer dc1-046.du.netease.net
[86400] 175.233.7.64.in-addr.arpa. domain name pointer dc1-047.du.netease.net
[86400] 176.233.7.64.in-addr.arpa. domain name pointer dc1-048.du.netease.net
[86400] 177.233.7.64.in-addr.arpa. domain name pointer dc1-049.du.netease.net
[86400] 178.233.7.64.in-addr.arpa. domain name pointer dc1-050.du.netease.net
[86400] 179.233.7.64.in-addr.arpa. domain name pointer dc1-051.du.netease.net
[86400] 180.233.7.64.in-addr.arpa. domain name pointer dc1-052.du.netease.net
[86400] 181.233.7.64.in-addr.arpa. domain name pointer dc1-053.du.netease.net
[86400] 182.233.7.64.in-addr.arpa. domain name pointer dc1-054.du.netease.net
[86400] 183.233.7.64.in-addr.arpa. domain name pointer dc1-055.du.netease.net
[86400] 184.233.7.64.in-addr.arpa. domain name pointer dc1-056.du.netease.net
[86400] 185.233.7.64.in-addr.arpa. domain name pointer dc1-057.du.netease.net
[86400] 186.233.7.64.in-addr.arpa. domain name pointer dc1-058.du.netease.net
[86400] 187.233.7.64.in-addr.arpa. domain name pointer dc1-059.du.netease.net
[86400] 188.233.7.64.in-addr.arpa. domain name pointer dc1-060.du.netease.net
[86400] 189.233.7.64.in-addr.arpa. domain name pointer dc1-061.du.netease.net
[86400] 190.233.7.64.in-addr.arpa. domain name pointer dc1-062.du.netease.net
[86400] 191.233.7.64.in-addr.arpa. domain name pointer dc1-063.du.netease.net
[86400] 192.233.7.64.in-addr.arpa. domain name pointer dc1-064.du.netease.net
[86400] 193.233.7.64.in-addr.arpa. domain name pointer dc1-065.du.netease.net
[86400] 194.233.7.64.in-addr.arpa. domain name pointer dc1-066.du.netease.net
[86400] 195.233.7.64.in-addr.arpa. domain name pointer dc1-067.du.netease.net
[86400] 196.233.7.64.in-addr.arpa. domain name pointer dc1-068.du.netease.net
[86400] 197.233.7.64.in-addr.arpa. domain name pointer dc1-069.du.netease.net
[86400] 198.233.7.64.in-addr.arpa. domain name pointer dc1-070.du.netease.net
[86400] 199.233.7.64.in-addr.arpa. domain name pointer dc1-071.du.netease.net
[86400] 200.233.7.64.in-addr.arpa. domain name pointer dc1-072.du.netease.net
[86400] 201.233.7.64.in-addr.arpa. domain name pointer dc1-073.du.netease.net
[86400] 202.233.7.64.in-addr.arpa. domain name pointer dc1-074.du.netease.net
[86400] 203.233.7.64.in-addr.arpa. domain name pointer dc1-075.du.netease.net
[86400] 204.233.7.64.in-addr.arpa. domain name pointer dc1-076.du.netease.net
[86400] 205.233.7.64.in-addr.arpa. domain name pointer dc1-077.du.netease.net
[86400] 206.233.7.64.in-addr.arpa. domain name pointer dc1-078.du.netease.net
[86400] 207.233.7.64.in-addr.arpa. domain name pointer dc1-079.du.netease.net
[86400] 208.233.7.64.in-addr.arpa. domain name pointer dc1-080.du.netease.net
[86400] 209.233.7.64.in-addr.arpa. domain name pointer dc1-081.du.netease.net
[86400] 210.233.7.64.in-addr.arpa. domain name pointer dc1-082.du.netease.net
[86400] 211.233.7.64.in-addr.arpa. domain name pointer dc1-083.du.netease.net
[86400] 212.233.7.64.in-addr.arpa. domain name pointer dc1-084.du.netease.net
[86400] 213.233.7.64.in-addr.arpa. domain name pointer dc1-085.du.netease.net
[86400] 214.233.7.64.in-addr.arpa. domain name pointer dc1-086.du.netease.net
[86400] 215.233.7.64.in-addr.arpa. domain name pointer dc1-087.du.netease.net
[86400] 216.233.7.64.in-addr.arpa. domain name pointer dc1-088.du.netease.net
[86400] 217.233.7.64.in-addr.arpa. domain name pointer dc1-089.du.netease.net
[86400] 218.233.7.64.in-addr.arpa. domain name pointer dc1-090.du.netease.net
[86400] 219.233.7.64.in-addr.arpa. domain name pointer dc1-091.du.netease.net
[86400] 220.233.7.64.in-addr.arpa. domain name pointer dc1-092.du.netease.net
[86400] 221.233.7.64.in-addr.arpa. domain name pointer dc1-093.du.netease.net
[86400] 222.233.7.64.in-addr.arpa. domain name pointer dc1-094.du.netease.net
[86400] 223.233.7.64.in-addr.arpa. domain name pointer dc1-095.du.netease.net
[86400] 224.233.7.64.in-addr.arpa. domain name pointer dc1-096.du.netease.net
[86400] 225.233.7.64.in-addr.arpa. domain name pointer dc1-097.du.netease.net
[86400] 226.233.7.64.in-addr.arpa. domain name pointer dc1-098.du.netease.net
[86400] 227.233.7.64.in-addr.arpa. domain name pointer dc1-099.du.netease.net
[86400] 228.233.7.64.in-addr.arpa. domain name pointer dc1-100.du.netease.net
[86400] 229.233.7.64.in-addr.arpa. domain name pointer dc1-101.du.netease.net
[86400] 230.233.7.64.in-addr.arpa. domain name pointer dc1-102.du.netease.net
[86400] 231.233.7.64.in-addr.arpa. domain name pointer dc1-103.du.netease.net
[86400] 232.233.7.64.in-addr.arpa. domain name pointer dc1-104.du.netease.net
[86400] 233.233.7.64.in-addr.arpa. domain name pointer dc1-105.du.netease.net
[86400] 234.233.7.64.in-addr.arpa. domain name pointer dc1-106.du.netease.net
[86400] 235.233.7.64.in-addr.arpa. domain name pointer dc1-107.du.netease.net
[86400] 236.233.7.64.in-addr.arpa. domain name pointer dc1-108.du.netease.net
[86400] 237.233.7.64.in-addr.arpa. domain name pointer dc1-109.du.netease.net
[86400] 238.233.7.64.in-addr.arpa. domain name pointer dc1-110.du.netease.net
[86400] 239.233.7.64.in-addr.arpa. domain name pointer dc1-111.du.netease.net
[86400] 240.233.7.64.in-addr.arpa. domain name pointer dc1-112.du.netease.net
[86400] 241.233.7.64.in-addr.arpa. domain name pointer dc1-113.du.netease.net
[86400] 242.233.7.64.in-addr.arpa. domain name pointer dc1-114.du.netease.net
[86400] 243.233.7.64.in-addr.arpa. domain name pointer dc1-115.du.netease.net
[86400] 244.233.7.64.in-addr.arpa. domain name pointer dc1-116.du.netease.net
[86400] 245.233.7.64.in-addr.arpa. domain name pointer dc1-117.du.netease.net
[86400] 246.233.7.64.in-addr.arpa. domain name pointer dc1-118.du.netease.net
[86400] 247.233.7.64.in-addr.arpa. domain name pointer dc1-119.du.netease.net
[86400] 248.233.7.64.in-addr.arpa. domain name pointer dc1-120.du.netease.net
[86400] 249.233.7.64.in-addr.arpa. domain name pointer dc1-121.du.netease.net
[86400] 250.233.7.64.in-addr.arpa. domain name pointer dc1-122.du.netease.net
[86400] 251.233.7.64.in-addr.arpa. domain name pointer dc1-123.du.netease.net
[86400] 252.233.7.64.in-addr.arpa. domain name pointer dc1-124.du.netease.net
[86400] 253.233.7.64.in-addr.arpa. domain name pointer dc1-125.du.netease.net
[86400] 254.233.7.64.in-addr.arpa. domain name pointer dc1-126.du.netease.net
[0] 255.233.7.64.in-addr.arpa.: domain name does not exist