I'm not seeing any errors from over here and everything seems to reverse fine. The bad horizontal referral error seems to be coming from your NS however. ;; BAD (HORIZONTAL) REFERRAL # ;; Received 84 bytes from 64.71.161.2#53(router-c1.systeminplace.net) in 60 ms $ for ((a=1;a<256;a++));do host 216.66.9.$a;done 1.9.66.216.in-addr.arpa domain name pointer router-c1.systeminplace.net. 2.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-2.chi.systeminplace.net. 3.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-3.chi.systeminplace.net. 4.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-4.chi.systeminplace.net. 5.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 6.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-6.chi.systeminplace.net. 7.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-7.chi.systeminplace.net. 8.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-8.chi.systeminplace.net. 9.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-9.chi.systeminplace.net. 10.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-10.chi.systeminplace.net. 11.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-11.chi.systeminplace.net. 12.9.66.216.in-addr.arpa domain name pointer ip-216-66-9-12.chi.systeminplace.net. Host 13.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 14.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 15.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 16.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 17.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 18.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 19.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 20.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 21.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 22.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 23.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 24.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 25.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 26.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 27.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 28.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 29.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 30.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 31.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 32.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 33.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 34.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 35.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 36.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 37.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 38.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 39.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 40.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 41.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 42.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 43.9.66.216.in-addr.arpa not found: 2(SERVFAIL) Host 44.9.66.216.in-addr.arpa not found: 2(SERVFAIL) 45.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 46.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 47.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 48.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 49.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 50.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 51.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 52.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 53.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 54.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 55.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 56.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 57.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 58.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 59.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 60.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 61.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 62.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 63.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 64.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 65.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 66.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 67.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 68.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 69.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 70.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 71.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 72.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 73.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 74.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 75.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 76.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 77.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 78.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 79.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 80.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 81.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 82.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 83.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 84.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 85.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 86.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 87.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 88.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 89.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 90.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 91.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 92.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 93.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 94.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 95.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 96.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 97.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 98.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 99.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 100.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 101.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 102.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 103.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 104.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 105.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 106.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 107.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 108.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 109.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 110.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 111.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 112.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 113.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 114.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 115.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 116.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 117.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 118.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 119.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 120.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 121.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 122.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 123.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 124.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 125.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 126.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 127.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 128.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 129.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 130.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 131.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 132.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 133.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 134.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 135.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 136.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 137.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 138.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 139.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 140.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 141.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 142.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 143.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 144.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 145.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 146.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 147.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 148.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 149.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 150.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 151.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 152.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 153.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 154.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 155.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 156.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 157.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 158.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 159.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 160.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 161.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 162.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 163.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 164.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 165.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 166.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 167.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 168.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 169.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 170.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 171.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 172.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 173.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 174.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 175.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 176.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 177.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 178.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 179.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 180.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 181.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 182.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 183.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 184.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 185.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 186.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 187.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 188.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 189.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 190.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 191.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 192.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 193.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 194.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 195.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 196.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 197.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 198.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 199.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 200.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 201.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 202.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 203.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 204.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 205.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 206.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 207.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 208.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 209.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 210.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 211.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 212.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 213.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 214.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 215.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 216.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 217.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 218.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 219.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 220.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 221.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 222.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 223.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 224.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 225.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 226.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 227.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 228.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 229.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 230.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 231.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 232.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 233.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 234.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 235.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 236.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 237.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 238.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 239.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 240.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 241.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 242.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 243.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 244.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 245.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 246.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 247.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 248.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 249.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 250.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 251.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 252.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 253.9.66.216.in-addr.arpa domain name pointer systeminplace.net. 254.9.66.216.in-addr.arpa domain name pointer systeminplace.net. Host 255.9.66.216.in-addr.arpa. not found: 3(NXDOMAIN) -- Rob Mosher Network Engineer Hurricane Electric / AS6939