[43200] 0.133.114.128.in-addr.arpa. domain name pointer kerr-net.ucsc.edu [43200] 1.133.114.128.in-addr.arpa. domain name pointer dhcp-133-01.ucsc.edu [43200] 2.133.114.128.in-addr.arpa. domain name pointer dhcp-133-02.ucsc.edu [43200] 3.133.114.128.in-addr.arpa. domain name pointer dhcp-133-03.ucsc.edu [43200] 4.133.114.128.in-addr.arpa. domain name pointer dhcp-133-04.ucsc.edu [43200] 5.133.114.128.in-addr.arpa. domain name pointer dhcp-133-05.ucsc.edu [43200] 6.133.114.128.in-addr.arpa. domain name pointer dhcp-133-06.ucsc.edu [43200] 7.133.114.128.in-addr.arpa. domain name pointer dhcp-133-07.ucsc.edu [43200] 8.133.114.128.in-addr.arpa. domain name pointer dhcp-133-08.ucsc.edu [43200] 9.133.114.128.in-addr.arpa. domain name pointer dhcp-133-09.ucsc.edu [43200] 10.133.114.128.in-addr.arpa. domain name pointer dhcp-133-10.ucsc.edu [43200] 11.133.114.128.in-addr.arpa. domain name pointer dhcp-133-11.ucsc.edu [43200] 12.133.114.128.in-addr.arpa. domain name pointer dhcp-133-12.ucsc.edu [43200] 13.133.114.128.in-addr.arpa. domain name pointer dhcp-133-13.ucsc.edu [43200] 14.133.114.128.in-addr.arpa. domain name pointer dhcp-133-14.ucsc.edu [43200] 15.133.114.128.in-addr.arpa. domain name pointer dhcp-133-15.ucsc.edu [43200] 16.133.114.128.in-addr.arpa. domain name pointer dhcp-133-16.ucsc.edu [43200] 17.133.114.128.in-addr.arpa. domain name pointer dhcp-133-17.ucsc.edu [43200] 18.133.114.128.in-addr.arpa. domain name pointer dhcp-133-18.ucsc.edu [43200] 19.133.114.128.in-addr.arpa. domain name pointer dhcp-133-19.ucsc.edu [43200] 20.133.114.128.in-addr.arpa. domain name pointer dhcp-133-20.ucsc.edu [43200] 21.133.114.128.in-addr.arpa. domain name pointer dhcp-133-21.ucsc.edu [43200] 22.133.114.128.in-addr.arpa. domain name pointer dhcp-133-22.ucsc.edu [43200] 23.133.114.128.in-addr.arpa. domain name pointer dhcp-133-23.ucsc.edu [43200] 24.133.114.128.in-addr.arpa. domain name pointer dhcp-133-24.ucsc.edu [43200] 25.133.114.128.in-addr.arpa. domain name pointer dhcp-133-25.ucsc.edu [43200] 26.133.114.128.in-addr.arpa. domain name pointer dhcp-133-26.ucsc.edu [43200] 27.133.114.128.in-addr.arpa. domain name pointer dhcp-133-27.ucsc.edu [43200] 28.133.114.128.in-addr.arpa. domain name pointer dhcp-133-28.ucsc.edu [43200] 29.133.114.128.in-addr.arpa. domain name pointer dhcp-133-29.ucsc.edu [43200] 30.133.114.128.in-addr.arpa. domain name pointer dhcp-133-30.ucsc.edu [43200] 31.133.114.128.in-addr.arpa. domain name pointer dhcp-133-31.ucsc.edu [43200] 32.133.114.128.in-addr.arpa. domain name pointer dhcp-133-32.ucsc.edu [43200] 33.133.114.128.in-addr.arpa. domain name pointer dhcp-133-33.ucsc.edu [43200] 34.133.114.128.in-addr.arpa. domain name pointer dhcp-133-34.ucsc.edu [43200] 35.133.114.128.in-addr.arpa. domain name pointer dhcp-133-35.ucsc.edu [43200] 36.133.114.128.in-addr.arpa. domain name pointer dhcp-133-36.ucsc.edu [43200] 37.133.114.128.in-addr.arpa. domain name pointer dhcp-133-37.ucsc.edu [43200] 38.133.114.128.in-addr.arpa. domain name pointer dhcp-133-38.ucsc.edu [43200] 39.133.114.128.in-addr.arpa. domain name pointer dhcp-133-39.ucsc.edu [43200] 40.133.114.128.in-addr.arpa. domain name pointer dhcp-133-40.ucsc.edu [43200] 41.133.114.128.in-addr.arpa. domain name pointer dhcp-133-41.ucsc.edu [43200] 42.133.114.128.in-addr.arpa. domain name pointer dhcp-133-42.ucsc.edu [43200] 43.133.114.128.in-addr.arpa. domain name pointer dhcp-133-43.ucsc.edu [43200] 44.133.114.128.in-addr.arpa. domain name pointer dhcp-133-44.ucsc.edu [43200] 45.133.114.128.in-addr.arpa. domain name pointer dhcp-133-45.ucsc.edu [43200] 46.133.114.128.in-addr.arpa. domain name pointer dhcp-133-46.ucsc.edu [43200] 47.133.114.128.in-addr.arpa. domain name pointer dhcp-133-47.ucsc.edu [43200] 48.133.114.128.in-addr.arpa. domain name pointer dhcp-133-48.ucsc.edu [43200] 49.133.114.128.in-addr.arpa. domain name pointer dhcp-133-49.ucsc.edu [43200] 50.133.114.128.in-addr.arpa. domain name pointer dhcp-133-50.ucsc.edu [43200] 51.133.114.128.in-addr.arpa. domain name pointer kerr247hplj4.ucsc.edu [43200] 52.133.114.128.in-addr.arpa. domain name pointer snoopy-133.ucsc.edu [43200] 53.133.114.128.in-addr.arpa. domain name pointer techtrainingprn.ucsc.edu [43200] 54.133.114.128.in-addr.arpa. domain name pointer kerrmaclabprn.ucsc.edu [43200] 55.133.114.128.in-addr.arpa. domain name pointer kerr-hp4.ucsc.edu [43200] 56.133.114.128.in-addr.arpa. domain name pointer mmclr1.ucsc.edu [43200] 57.133.114.128.in-addr.arpa. domain name pointer helpsmac.ucsc.edu [43200] 58.133.114.128.in-addr.arpa. domain name pointer morrison.ucsc [43200] 59.133.114.128.in-addr.arpa. domain name pointer bashp3.ucsc.edu [43200] 60.133.114.128.in-addr.arpa. domain name pointer peterm.ucsc.edu [43200] 61.133.114.128.in-addr.arpa. domain name pointer fast-sat.ucsc.edu [0] 62.133.114.128.in-addr.arpa.: domain name does not exist [0] 63.133.114.128.in-addr.arpa.: domain name does not exist [0] 64.133.114.128.in-addr.arpa.: domain name does not exist [0] 65.133.114.128.in-addr.arpa.: domain name does not exist [43200] 66.133.114.128.in-addr.arpa. domain name pointer ADAM.ucsc.edu [43200] 67.133.114.128.in-addr.arpa. domain name pointer GRADY-II.ucsc.edu [43200] 68.133.114.128.in-addr.arpa. domain name pointer gdbackup.ucsc.edu [43200] 69.133.114.128.in-addr.arpa. domain name pointer gddevserv.ucsc.edu [0] 70.133.114.128.in-addr.arpa.: domain name does not exist [43200] 71.133.114.128.in-addr.arpa. domain name pointer basx.ucsc.edu [43200] 72.133.114.128.in-addr.arpa. domain name pointer opa.ucsc.edu [43200] 73.133.114.128.in-addr.arpa. domain name pointer gdivcolor.ucsc.edu [43200] 74.133.114.128.in-addr.arpa. domain name pointer smt-ptr.ucsc.edu [43200] 75.133.114.128.in-addr.arpa. domain name pointer kerr69-ptr.ucsc.edu [43200] 76.133.114.128.in-addr.arpa. domain name pointer basricoh1.ucsc.edu [0] 77.133.114.128.in-addr.arpa.: domain name does not exist [0] 78.133.114.128.in-addr.arpa.: domain name does not exist [0] 79.133.114.128.in-addr.arpa.: domain name does not exist [43200] 80.133.114.128.in-addr.arpa. domain name pointer dhcp-133-80.ucsc.edu [43200] 81.133.114.128.in-addr.arpa. domain name pointer dhcp-133-81.ucsc.edu [43200] 82.133.114.128.in-addr.arpa. domain name pointer dhcp-133-82.ucsc.edu [43200] 83.133.114.128.in-addr.arpa. domain name pointer dhcp-133-83.ucsc.edu [43200] 84.133.114.128.in-addr.arpa. domain name pointer dhcp-133-84.ucsc.edu [43200] 85.133.114.128.in-addr.arpa. domain name pointer dhcp-133-85.ucsc.edu [43200] 86.133.114.128.in-addr.arpa. domain name pointer dhcp-133-86.ucsc.edu [43200] 87.133.114.128.in-addr.arpa. domain name pointer dhcp-133-87.ucsc.edu [43200] 88.133.114.128.in-addr.arpa. domain name pointer dhcp-133-88.ucsc.edu [43200] 89.133.114.128.in-addr.arpa. domain name pointer dhcp-133-89.ucsc.edu [43200] 90.133.114.128.in-addr.arpa. domain name pointer dhcp-133-90.ucsc.edu [43200] 91.133.114.128.in-addr.arpa. domain name pointer dhcp-133-91.ucsc.edu [43200] 92.133.114.128.in-addr.arpa. domain name pointer dhcp-133-92.ucsc.edu [43200] 93.133.114.128.in-addr.arpa. domain name pointer dhcp-133-93.ucsc.edu [43200] 94.133.114.128.in-addr.arpa. domain name pointer dhcp-133-94.ucsc.edu [43200] 95.133.114.128.in-addr.arpa. domain name pointer dhcp-133-95.ucsc.edu [43200] 96.133.114.128.in-addr.arpa. domain name pointer dhcp-133-96.ucsc.edu [43200] 97.133.114.128.in-addr.arpa. domain name pointer dhcp-133-97.ucsc.edu [43200] 98.133.114.128.in-addr.arpa. domain name pointer dhcp-133-98.ucsc.edu [43200] 99.133.114.128.in-addr.arpa. domain name pointer dhcp-133-99.ucsc.edu [43200] 100.133.114.128.in-addr.arpa. domain name pointer dhcp-133-100.ucsc.edu [43200] 101.133.114.128.in-addr.arpa. domain name pointer dhcp-133-101.ucsc.edu [43200] 102.133.114.128.in-addr.arpa. domain name pointer dhcp-133-102.ucsc.edu [43200] 103.133.114.128.in-addr.arpa. domain name pointer dhcp-133-103.ucsc.edu [43200] 104.133.114.128.in-addr.arpa. domain name pointer dhcp-133-104.ucsc.edu [43200] 105.133.114.128.in-addr.arpa. domain name pointer dhcp-133-105.ucsc.edu [43200] 106.133.114.128.in-addr.arpa. domain name pointer dhcp-133-106.ucsc.edu [43200] 107.133.114.128.in-addr.arpa. domain name pointer dhcp-133-107.ucsc.edu [43200] 108.133.114.128.in-addr.arpa. domain name pointer dhcp-133-108.ucsc.edu [43200] 109.133.114.128.in-addr.arpa. domain name pointer dhcp-133-109.ucsc.edu [43200] 110.133.114.128.in-addr.arpa. domain name pointer dhcp-133-110.ucsc.edu [43200] 111.133.114.128.in-addr.arpa. domain name pointer dhcp-133-111.ucsc.edu [43200] 112.133.114.128.in-addr.arpa. domain name pointer dhcp-133-112.ucsc.edu [43200] 113.133.114.128.in-addr.arpa. domain name pointer dhcp-133-113.ucsc.edu [43200] 114.133.114.128.in-addr.arpa. domain name pointer dhcp-133-114.ucsc.edu [43200] 115.133.114.128.in-addr.arpa. domain name pointer dhcp-133-115.ucsc.edu [43200] 116.133.114.128.in-addr.arpa. domain name pointer dhcp-133-116.ucsc.edu [43200] 117.133.114.128.in-addr.arpa. domain name pointer dhcp-133-117.ucsc.edu [43200] 118.133.114.128.in-addr.arpa. domain name pointer dhcp-133-118.ucsc.edu [43200] 119.133.114.128.in-addr.arpa. domain name pointer dhcp-133-119.ucsc.edu [43200] 120.133.114.128.in-addr.arpa. domain name pointer dhcp-133-120.ucsc.edu [43200] 121.133.114.128.in-addr.arpa. domain name pointer dhcp-133-121.ucsc.edu [43200] 122.133.114.128.in-addr.arpa. domain name pointer dhcp-133-122.ucsc.edu [43200] 123.133.114.128.in-addr.arpa. domain name pointer dhcp-133-123.ucsc.edu [43200] 124.133.114.128.in-addr.arpa. domain name pointer dhcp-133-124.ucsc.edu [43200] 125.133.114.128.in-addr.arpa. domain name pointer dhcp-133-125.ucsc.edu [43200] 126.133.114.128.in-addr.arpa. domain name pointer dhcp-133-126.ucsc.edu [43200] 127.133.114.128.in-addr.arpa. domain name pointer dhcp-133-127.ucsc.edu [43200] 128.133.114.128.in-addr.arpa. domain name pointer dhcp-133-128.ucsc.edu [43200] 129.133.114.128.in-addr.arpa. domain name pointer dhcp-133-129.ucsc.edu [43200] 130.133.114.128.in-addr.arpa. domain name pointer dhcp-133-130.ucsc.edu [43200] 131.133.114.128.in-addr.arpa. domain name pointer dhcp-133-131.ucsc.edu [43200] 132.133.114.128.in-addr.arpa. domain name pointer dhcp-133-132.ucsc.edu [43200] 133.133.114.128.in-addr.arpa. domain name pointer dhcp-133-133.ucsc.edu [43200] 134.133.114.128.in-addr.arpa. domain name pointer dhcp-133-134.ucsc.edu [43200] 135.133.114.128.in-addr.arpa. domain name pointer dhcp-133-135.ucsc.edu [43200] 136.133.114.128.in-addr.arpa. domain name pointer dhcp-133-136.ucsc.edu [43200] 137.133.114.128.in-addr.arpa. domain name pointer dhcp-133-137.ucsc.edu [43200] 138.133.114.128.in-addr.arpa. domain name pointer dhcp-133-138.ucsc.edu [43200] 139.133.114.128.in-addr.arpa. domain name pointer dhcp-133-139.ucsc.edu [43200] 140.133.114.128.in-addr.arpa. domain name pointer dhcp-133-140.ucsc.edu [43200] 141.133.114.128.in-addr.arpa. domain name pointer dhcp-133-141.ucsc.edu [43200] 142.133.114.128.in-addr.arpa. domain name pointer dhcp-133-142.ucsc.edu [43200] 143.133.114.128.in-addr.arpa. domain name pointer dhcp-133-143.ucsc.edu [43200] 144.133.114.128.in-addr.arpa. domain name pointer dhcp-133-144.ucsc.edu [43200] 145.133.114.128.in-addr.arpa. domain name pointer dhcp-133-145.ucsc.edu [43200] 146.133.114.128.in-addr.arpa. domain name pointer dhcp-133-146.ucsc.edu [43200] 147.133.114.128.in-addr.arpa. domain name pointer dhcp-133-147.ucsc.edu [43200] 148.133.114.128.in-addr.arpa. domain name pointer dhcp-133-148.ucsc.edu [43200] 149.133.114.128.in-addr.arpa. domain name pointer dhcp-133-149.ucsc.edu [43200] 150.133.114.128.in-addr.arpa. domain name pointer dhcp-133-150.ucsc.edu [43200] 151.133.114.128.in-addr.arpa. domain name pointer dhcp-133-151.ucsc.edu [43200] 152.133.114.128.in-addr.arpa. domain name pointer dhcp-133-152.ucsc.edu [43200] 153.133.114.128.in-addr.arpa. domain name pointer dhcp-133-153.ucsc.edu [43200] 154.133.114.128.in-addr.arpa. domain name pointer dhcp-133-154.ucsc.edu [43200] 155.133.114.128.in-addr.arpa. domain name pointer dhcp-133-155.ucsc.edu [43200] 156.133.114.128.in-addr.arpa. domain name pointer dhcp-133-156.ucsc.edu [43200] 157.133.114.128.in-addr.arpa. domain name pointer dhcp-133-157.ucsc.edu [43200] 158.133.114.128.in-addr.arpa. domain name pointer dhcp-133-158.ucsc.edu [43200] 159.133.114.128.in-addr.arpa. domain name pointer dhcp-133-159.ucsc.edu [43200] 160.133.114.128.in-addr.arpa. domain name pointer dhcp-133-160.ucsc.edu [43200] 161.133.114.128.in-addr.arpa. domain name pointer dhcp-133-161.ucsc.edu [43200] 162.133.114.128.in-addr.arpa. domain name pointer dhcp-133-162.ucsc.edu [43200] 163.133.114.128.in-addr.arpa. domain name pointer dhcp-133-163.ucsc.edu [43200] 164.133.114.128.in-addr.arpa. domain name pointer dhcp-133-164.ucsc.edu [43200] 165.133.114.128.in-addr.arpa. domain name pointer dhcp-133-165.ucsc.edu [43200] 166.133.114.128.in-addr.arpa. domain name pointer dhcp-133-166.ucsc.edu [43200] 167.133.114.128.in-addr.arpa. domain name pointer dhcp-133-167.ucsc.edu [43200] 168.133.114.128.in-addr.arpa. domain name pointer dhcp-133-168.ucsc.edu [43200] 169.133.114.128.in-addr.arpa. domain name pointer dhcp-133-169.ucsc.edu [43200] 170.133.114.128.in-addr.arpa. domain name pointer dhcp-133-170.ucsc.edu [43200] 171.133.114.128.in-addr.arpa. domain name pointer dhcp-133-171.ucsc.edu [43200] 172.133.114.128.in-addr.arpa. domain name pointer dhcp-133-172.ucsc.edu [43200] 173.133.114.128.in-addr.arpa. domain name pointer dhcp-133-173.ucsc.edu [43200] 174.133.114.128.in-addr.arpa. domain name pointer dhcp-133-174.ucsc.edu [43200] 175.133.114.128.in-addr.arpa. domain name pointer dhcp-133-175.ucsc.edu [43200] 176.133.114.128.in-addr.arpa. domain name pointer dhcp-133-176.ucsc.edu [43200] 177.133.114.128.in-addr.arpa. domain name pointer dhcp-133-177.ucsc.edu [43200] 178.133.114.128.in-addr.arpa. domain name pointer dhcp-133-178.ucsc.edu [43200] 179.133.114.128.in-addr.arpa. domain name pointer dhcp-133-179.ucsc.edu [43200] 180.133.114.128.in-addr.arpa. domain name pointer dhcp-133-180.ucsc.edu [43200] 181.133.114.128.in-addr.arpa. domain name pointer dhcp-133-181.ucsc.edu [43200] 182.133.114.128.in-addr.arpa. domain name pointer dhcp-133-182.ucsc.edu [43200] 183.133.114.128.in-addr.arpa. domain name pointer dhcp-133-183.ucsc.edu [43200] 184.133.114.128.in-addr.arpa. domain name pointer dhcp-133-184.ucsc.edu [43200] 185.133.114.128.in-addr.arpa. domain name pointer dhcp-133-185.ucsc.edu [43200] 186.133.114.128.in-addr.arpa. domain name pointer dhcp-133-186.ucsc.edu [43200] 187.133.114.128.in-addr.arpa. domain name pointer dhcp-133-187.ucsc.edu [0] 188.133.114.128.in-addr.arpa.: domain name does not exist [0] 189.133.114.128.in-addr.arpa.: domain name does not exist [0] 190.133.114.128.in-addr.arpa.: domain name does not exist [0] 191.133.114.128.in-addr.arpa.: domain name does not exist [0] 192.133.114.128.in-addr.arpa.: domain name does not exist [0] 193.133.114.128.in-addr.arpa.: domain name does not exist [0] 194.133.114.128.in-addr.arpa.: domain name does not exist [0] 195.133.114.128.in-addr.arpa.: domain name does not exist [0] 196.133.114.128.in-addr.arpa.: domain name does not exist [0] 197.133.114.128.in-addr.arpa.: domain name does not exist [0] 198.133.114.128.in-addr.arpa.: domain name does not exist [0] 199.133.114.128.in-addr.arpa.: domain name does not exist [0] 200.133.114.128.in-addr.arpa.: domain name does not exist [0] 201.133.114.128.in-addr.arpa.: domain name does not exist [0] 202.133.114.128.in-addr.arpa.: domain name does not exist [0] 203.133.114.128.in-addr.arpa.: domain name does not exist [0] 204.133.114.128.in-addr.arpa.: domain name does not exist [0] 205.133.114.128.in-addr.arpa.: domain name does not exist [0] 206.133.114.128.in-addr.arpa.: domain name does not exist [0] 207.133.114.128.in-addr.arpa.: domain name does not exist [0] 208.133.114.128.in-addr.arpa.: domain name does not exist [0] 209.133.114.128.in-addr.arpa.: domain name does not exist [0] 210.133.114.128.in-addr.arpa.: domain name does not exist [0] 211.133.114.128.in-addr.arpa.: domain name does not exist [0] 212.133.114.128.in-addr.arpa.: domain name does not exist [0] 213.133.114.128.in-addr.arpa.: domain name does not exist [0] 214.133.114.128.in-addr.arpa.: domain name does not exist [0] 215.133.114.128.in-addr.arpa.: domain name does not exist [0] 216.133.114.128.in-addr.arpa.: domain name does not exist [0] 217.133.114.128.in-addr.arpa.: domain name does not exist [0] 218.133.114.128.in-addr.arpa.: domain name does not exist [0] 219.133.114.128.in-addr.arpa.: domain name does not exist [0] 220.133.114.128.in-addr.arpa.: domain name does not exist [0] 221.133.114.128.in-addr.arpa.: domain name does not exist [0] 222.133.114.128.in-addr.arpa.: domain name does not exist [0] 223.133.114.128.in-addr.arpa.: domain name does not exist [0] 224.133.114.128.in-addr.arpa.: domain name does not exist [0] 225.133.114.128.in-addr.arpa.: domain name does not exist [0] 226.133.114.128.in-addr.arpa.: domain name does not exist [0] 227.133.114.128.in-addr.arpa.: domain name does not exist [0] 228.133.114.128.in-addr.arpa.: domain name does not exist [0] 229.133.114.128.in-addr.arpa.: domain name does not exist [0] 230.133.114.128.in-addr.arpa.: domain name does not exist [0] 231.133.114.128.in-addr.arpa.: domain name does not exist [0] 232.133.114.128.in-addr.arpa.: domain name does not exist [0] 233.133.114.128.in-addr.arpa.: domain name does not exist [0] 234.133.114.128.in-addr.arpa.: domain name does not exist [0] 235.133.114.128.in-addr.arpa.: domain name does not exist [43200] 236.133.114.128.in-addr.arpa. domain name pointer wap107.ucsc.edu [43200] 237.133.114.128.in-addr.arpa. domain name pointer wap153.ucsc.edu [43200] 238.133.114.128.in-addr.arpa. domain name pointer wap154.ucsc.edu [43200] 239.133.114.128.in-addr.arpa. domain name pointer kerrmaclabsvr.ucsc.edu [0] 240.133.114.128.in-addr.arpa.: domain name does not exist [43200] 241.133.114.128.in-addr.arpa. domain name pointer hub348.ucsc.edu [43200] 242.133.114.128.in-addr.arpa. domain name pointer hub407.ucsc.edu [43200] 243.133.114.128.in-addr.arpa. domain name pointer hub71.ucsc.edu [0] 244.133.114.128.in-addr.arpa.: domain name does not exist [43200] 245.133.114.128.in-addr.arpa. domain name pointer ups-kerr.ucsc.edu [43200] 246.133.114.128.in-addr.arpa. domain name pointer hub76.ucsc.edu [43200] 247.133.114.128.in-addr.arpa. domain name pointer wap108.ucsc.edu [43200] 248.133.114.128.in-addr.arpa. domain name pointer wap106.ucsc.edu [43200] 249.133.114.128.in-addr.arpa. domain name pointer hub97.ucsc.edu [43200] 250.133.114.128.in-addr.arpa. domain name pointer hub98.ucsc.edu [43200] 251.133.114.128.in-addr.arpa. domain name pointer hub237.ucsc.edu [43200] 252.133.114.128.in-addr.arpa. domain name pointer hub200.ucsc.edu [43200] 253.133.114.128.in-addr.arpa. domain name pointer hub58.ucsc.edu [43200] 254.133.114.128.in-addr.arpa. domain name pointer hub66.ucsc.edu [0] 255.133.114.128.in-addr.arpa.: domain name does not exist