[0] 0.137.63.190.in-addr.arpa.: domain name does not exist
[86400] 1.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-1.claro.com.ec
[86400] 2.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-2.claro.com.ec
[86400] 3.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-3.claro.com.ec
[86400] 4.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-4.claro.com.ec
[86400] 5.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-5.claro.com.ec
[86400] 6.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-6.claro.com.ec
[86400] 7.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-7.claro.com.ec
[86400] 8.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-8.claro.com.ec
[86400] 9.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-9.claro.com.ec
[86400] 10.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-10.claro.com.ec
[86400] 11.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-11.claro.com.ec
[86400] 12.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-12.claro.com.ec
[86400] 13.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-13.claro.com.ec
[86400] 14.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-14.claro.com.ec
[86400] 15.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-15.claro.com.ec
[86400] 16.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-16.claro.com.ec
[86400] 17.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-17.claro.com.ec
[86400] 18.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-18.claro.com.ec
[86400] 19.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-19.claro.com.ec
[86400] 20.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-20.claro.com.ec
[86400] 21.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-21.claro.com.ec
[86400] 22.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-22.claro.com.ec
[86400] 23.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-23.claro.com.ec
[86400] 24.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-24.claro.com.ec
[86400] 25.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-25.claro.com.ec
[86400] 26.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-26.claro.com.ec
[86400] 27.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-27.claro.com.ec
[86400] 28.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-28.claro.com.ec
[86400] 29.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-29.claro.com.ec
[86400] 30.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-30.claro.com.ec
[86400] 31.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-31.claro.com.ec
[86400] 32.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-32.claro.com.ec
[86400] 33.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-33.claro.com.ec
[86400] 34.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-34.claro.com.ec
[86400] 35.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-35.claro.com.ec
[86400] 36.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-36.claro.com.ec
[86400] 37.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-37.claro.com.ec
[86400] 38.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-38.claro.com.ec
[86400] 39.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-39.claro.com.ec
[86400] 40.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-40.claro.com.ec
[86400] 41.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-41.claro.com.ec
[86400] 42.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-42.claro.com.ec
[86400] 43.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-43.claro.com.ec
[86400] 44.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-44.claro.com.ec
[86400] 45.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-45.claro.com.ec
[86400] 46.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-46.claro.com.ec
[86400] 47.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-47.claro.com.ec
[86400] 48.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-48.claro.com.ec
[86400] 49.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-49.claro.com.ec
[86400] 50.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-50.claro.com.ec
[86400] 51.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-51.claro.com.ec
[86400] 52.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-52.claro.com.ec
[86400] 53.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-53.claro.com.ec
[86400] 54.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-54.claro.com.ec
[86400] 55.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-55.claro.com.ec
[86400] 56.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-56.claro.com.ec
[86400] 57.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-57.claro.com.ec
[86400] 58.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-58.claro.com.ec
[86400] 59.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-59.claro.com.ec
[86400] 60.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-60.claro.com.ec
[86400] 61.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-61.claro.com.ec
[86400] 62.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-62.claro.com.ec
[86400] 63.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-63.claro.com.ec
[86400] 64.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-64.claro.com.ec
[86400] 65.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-65.claro.com.ec
[86400] 66.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-66.claro.com.ec
[86400] 67.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-67.claro.com.ec
[86400] 68.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-68.claro.com.ec
[86400] 69.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-69.claro.com.ec
[86400] 70.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-70.claro.com.ec
[86400] 71.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-71.claro.com.ec
[86400] 72.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-72.claro.com.ec
[86400] 73.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-73.claro.com.ec
[86400] 74.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-74.claro.com.ec
[86400] 75.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-75.claro.com.ec
[86400] 76.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-76.claro.com.ec
[86400] 77.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-77.claro.com.ec
[86400] 78.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-78.claro.com.ec
[86400] 79.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-79.claro.com.ec
[86400] 80.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-80.claro.com.ec
[86400] 81.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-81.claro.com.ec
[86400] 82.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-82.claro.com.ec
[86400] 83.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-83.claro.com.ec
[86400] 84.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-84.claro.com.ec
[86400] 85.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-85.claro.com.ec
[86400] 86.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-86.claro.com.ec
[86400] 87.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-87.claro.com.ec
[86400] 88.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-88.claro.com.ec
[86400] 89.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-89.claro.com.ec
[86400] 90.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-90.claro.com.ec
[86400] 91.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-91.claro.com.ec
[86400] 92.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-92.claro.com.ec
[86400] 93.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-93.claro.com.ec
[86400] 94.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-94.claro.com.ec
[86400] 95.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-95.claro.com.ec
[86400] 96.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-96.claro.com.ec
[86400] 97.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-96.claro.com.ec
[86400] 98.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-98.claro.com.ec
[86400] 99.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-99.claro.com.ec
[86400] 100.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-100.claro.com.ec
[86400] 101.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-101.claro.com.ec
[86400] 102.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-102.claro.com.ec
[86400] 103.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-103.claro.com.ec
[86400] 104.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-104.claro.com.ec
[86400] 105.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-105.claro.com.ec
[86400] 106.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-106.claro.com.ec
[86400] 107.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-107.claro.com.ec
[86400] 108.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-108.claro.com.ec
[86400] 109.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-109.claro.com.ec
[86400] 110.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-110.claro.com.ec
[86400] 111.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-111.claro.com.ec
[86400] 112.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-112.claro.com.ec
[86400] 113.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-113.claro.com.ec
[86400] 114.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-114.claro.com.ec
[86400] 115.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-115.claro.com.ec
[86400] 116.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-116.claro.com.ec
[86400] 117.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-117.claro.com.ec
[86400] 118.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-118.claro.com.ec
[86400] 119.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-119.claro.com.ec
[86400] 120.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-120.claro.com.ec
[86400] 121.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-121.claro.com.ec
[86400] 122.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-122.claro.com.ec
[86400] 123.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-123.claro.com.ec
[86400] 124.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-124.claro.com.ec
[86400] 125.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-125.claro.com.ec
[86400] 126.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-126.claro.com.ec
[86400] 127.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-127.claro.com.ec
[86400] 128.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-128.claro.com.ec
[86400] 129.137.63.190.in-addr.arpa. domain name pointer customer-190-63-137-129.claro.com.ec
[0] 130.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 131.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 132.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 133.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 134.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 135.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 136.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 137.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 138.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 139.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 140.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 141.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 142.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 143.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 144.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 145.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 146.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 147.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 148.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 149.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 150.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 151.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 152.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 153.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 154.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 155.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 156.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 157.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 158.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 159.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 160.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 161.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 162.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 163.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 164.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 165.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 166.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 167.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 168.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 169.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 170.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 171.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 172.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 173.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 174.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 175.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 176.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 177.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 178.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 179.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 180.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 181.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 182.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 183.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 184.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 185.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 186.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 187.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 188.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 189.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 190.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 191.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 192.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 193.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 194.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 195.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 196.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 197.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 198.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 199.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 200.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 201.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 202.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 203.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 204.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 205.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 206.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 207.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 208.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 209.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 210.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 211.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 212.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 213.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 214.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 215.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 216.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 217.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 218.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 219.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 220.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 221.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 222.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 223.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 224.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 225.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 226.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 227.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 228.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 229.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 230.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 231.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 232.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 233.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 234.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 235.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 236.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 237.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 238.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 239.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 240.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 241.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 242.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 243.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 244.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 245.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 246.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 247.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 248.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 249.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 250.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 251.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 252.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 253.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 254.137.63.190.in-addr.arpa.: temporary failure in name resolution
[0] 255.137.63.190.in-addr.arpa.: temporary failure in name resolution