Host 0.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[1800] 1.158.186.221.in-addr.arpa domain name pointer rt.tky.softfront.co.jp.
[1800] 2.158.186.221.in-addr.arpa domain name pointer ns.tky.softfront.co.jp.
[1800] 3.158.186.221.in-addr.arpa domain name pointer gw.tky.softfront.co.jp.
[1800] 4.158.186.221.in-addr.arpa domain name pointer vpn-gw.tky.softfront.co.jp.
Host 5.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 6.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 7.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[1800] 8.158.186.221.in-addr.arpa domain name pointer global8.tky.softfront.co.jp.
[1800] 9.158.186.221.in-addr.arpa domain name pointer global9.tky.softfront.co.jp.
[1800] 10.158.186.221.in-addr.arpa domain name pointer global10.tky.softfront.co.jp.
[1800] 11.158.186.221.in-addr.arpa domain name pointer global11.tky.softfront.co.jp.
[1800] 12.158.186.221.in-addr.arpa domain name pointer global12.tky.softfront.co.jp.
[1800] 13.158.186.221.in-addr.arpa domain name pointer global13.tky.softfront.co.jp.
[1800] 14.158.186.221.in-addr.arpa domain name pointer global14.tky.softfront.co.jp.
[1800] 15.158.186.221.in-addr.arpa domain name pointer broadcast.tky.softfront.co.jp.
Host 16.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 17.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 18.158.186.221.in-addr.arpa domain name pointer ns.act-inf.co.jp.
[86400] 19.158.186.221.in-addr.arpa domain name pointer mx.act-inf.co.jp.
Host 20.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 21.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 22.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 23.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 24.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 25.158.186.221.in-addr.arpa domain name pointer pc1.mlj01-unet.ocn.ne.jp.
[86400] 26.158.186.221.in-addr.arpa domain name pointer pc2.mlj01-unet.ocn.ne.jp.
[86400] 27.158.186.221.in-addr.arpa domain name pointer pc3.mlj01-unet.ocn.ne.jp.
[86400] 28.158.186.221.in-addr.arpa domain name pointer pc4.mlj01-unet.ocn.ne.jp.
[86400] 29.158.186.221.in-addr.arpa domain name pointer pc5.mlj01-unet.ocn.ne.jp.
[86400] 30.158.186.221.in-addr.arpa domain name pointer pc6.mlj01-unet.ocn.ne.jp.
Host 31.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 32.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 33.158.186.221.in-addr.arpa domain name pointer pc1.n-c-unet.ocn.ne.jp.
[86400] 34.158.186.221.in-addr.arpa domain name pointer pc2.n-c-unet.ocn.ne.jp.
[86400] 35.158.186.221.in-addr.arpa domain name pointer pc3.n-c-unet.ocn.ne.jp.
[86400] 36.158.186.221.in-addr.arpa domain name pointer pc4.n-c-unet.ocn.ne.jp.
[86400] 37.158.186.221.in-addr.arpa domain name pointer pc5.n-c-unet.ocn.ne.jp.
[86400] 38.158.186.221.in-addr.arpa domain name pointer pc6.n-c-unet.ocn.ne.jp.
Host 39.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 40.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 41.158.186.221.in-addr.arpa domain name pointer gw.suncomm.co.jp.
[86400] 42.158.186.221.in-addr.arpa domain name pointer test2.suncomm.co.jp.
[86400] 43.158.186.221.in-addr.arpa domain name pointer gw1.suncomm.co.jp.
[86400] 44.158.186.221.in-addr.arpa domain name pointer gw2.suncomm.co.jp.
[86400] 45.158.186.221.in-addr.arpa domain name pointer ftp.suncomm.co.jp.
[86400] 46.158.186.221.in-addr.arpa domain name pointer test1.suncomm.co.jp.
Host 47.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 48.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 49.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[3600] 50.158.186.221.in-addr.arpa domain name pointer scsv3.saint-care.com.
[3600] 51.158.186.221.in-addr.arpa domain name pointer scsv1.saint-care.jp.
Host 52.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 53.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[3600] 54.158.186.221.in-addr.arpa domain name pointer scsv10.saint-care.com.
Host 55.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 56.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 57.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[3600] 58.158.186.221.in-addr.arpa domain name pointer scsv4.nihonfukushi.com.
[3600] 59.158.186.221.in-addr.arpa domain name pointer scsv14.nihonfukushi.com.
Host 60.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 61.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 62.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 63.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 64.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 65.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 66.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 67.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 68.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 69.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 70.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 71.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 72.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 73.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 74.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 75.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 76.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 77.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 78.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 79.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 80.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 81.158.186.221.in-addr.arpa domain name pointer pc1.aa104-1-unet.ocn.ne.jp.
[86400] 82.158.186.221.in-addr.arpa domain name pointer pc2.aa104-1-unet.ocn.ne.jp.
[86400] 83.158.186.221.in-addr.arpa domain name pointer pc3.aa104-1-unet.ocn.ne.jp.
[86400] 84.158.186.221.in-addr.arpa domain name pointer pc4.aa104-1-unet.ocn.ne.jp.
[86400] 85.158.186.221.in-addr.arpa domain name pointer pc5.aa104-1-unet.ocn.ne.jp.
[86400] 86.158.186.221.in-addr.arpa domain name pointer pc6.aa104-1-unet.ocn.ne.jp.
Host 87.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 88.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 89.158.186.221.in-addr.arpa domain name pointer pc1.aa104-2-unet.ocn.ne.jp.
[86400] 90.158.186.221.in-addr.arpa domain name pointer pc2.aa104-2-unet.ocn.ne.jp.
[86400] 91.158.186.221.in-addr.arpa domain name pointer pc3.aa104-2-unet.ocn.ne.jp.
[86400] 92.158.186.221.in-addr.arpa domain name pointer pc4.aa104-2-unet.ocn.ne.jp.
[86400] 93.158.186.221.in-addr.arpa domain name pointer pc5.aa104-2-unet.ocn.ne.jp.
[86400] 94.158.186.221.in-addr.arpa domain name pointer pc6.aa104-2-unet.ocn.ne.jp.
Host 95.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 96.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 97.158.186.221.in-addr.arpa domain name pointer pc1.exeo-ae-unet.ocn.ne.jp.
[86400] 98.158.186.221.in-addr.arpa domain name pointer pc2.exeo-ae-unet.ocn.ne.jp.
[86400] 99.158.186.221.in-addr.arpa domain name pointer pc3.exeo-ae-unet.ocn.ne.jp.
[86400] 100.158.186.221.in-addr.arpa domain name pointer pc4.exeo-ae-unet.ocn.ne.jp.
[86400] 101.158.186.221.in-addr.arpa domain name pointer pc5.exeo-ae-unet.ocn.ne.jp.
[86400] 102.158.186.221.in-addr.arpa domain name pointer pc6.exeo-ae-unet.ocn.ne.jp.
Host 103.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 104.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 105.158.186.221.in-addr.arpa domain name pointer pc1.hondapr-unet.ocn.ne.jp.
[86400] 106.158.186.221.in-addr.arpa domain name pointer pc2.hondapr-unet.ocn.ne.jp.
[86400] 107.158.186.221.in-addr.arpa domain name pointer pc3.hondapr-unet.ocn.ne.jp.
[86400] 108.158.186.221.in-addr.arpa domain name pointer pc4.hondapr-unet.ocn.ne.jp.
[86400] 109.158.186.221.in-addr.arpa domain name pointer pc5.hondapr-unet.ocn.ne.jp.
[86400] 110.158.186.221.in-addr.arpa domain name pointer pc6.hondapr-unet.ocn.ne.jp.
Host 111.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 112.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 113.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 114.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 115.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 116.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 117.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 118.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 119.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 120.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 121.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 122.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 123.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 124.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 125.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 126.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 127.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 128.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 129.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[3600] 130.158.186.221.in-addr.arpa domain name pointer ns1.takabun.co.jp.
Host 131.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 132.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 133.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 134.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 135.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 136.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 137.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 138.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 139.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 140.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 141.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 142.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 143.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 144.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 145.158.186.221.in-addr.arpa domain name pointer pc1.hardi004-unet.ocn.ne.jp.
[86400] 146.158.186.221.in-addr.arpa domain name pointer pc2.hardi004-unet.ocn.ne.jp.
[86400] 147.158.186.221.in-addr.arpa domain name pointer pc3.hardi004-unet.ocn.ne.jp.
[86400] 148.158.186.221.in-addr.arpa domain name pointer pc4.hardi004-unet.ocn.ne.jp.
[86400] 149.158.186.221.in-addr.arpa domain name pointer pc5.hardi004-unet.ocn.ne.jp.
[86400] 150.158.186.221.in-addr.arpa domain name pointer pc6.hardi004-unet.ocn.ne.jp.
Host 151.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 152.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 153.158.186.221.in-addr.arpa domain name pointer pc1.hardi006-unet.ocn.ne.jp.
[86400] 154.158.186.221.in-addr.arpa domain name pointer pc2.hardi006-unet.ocn.ne.jp.
[86400] 155.158.186.221.in-addr.arpa domain name pointer pc3.hardi006-unet.ocn.ne.jp.
[86400] 156.158.186.221.in-addr.arpa domain name pointer pc4.hardi006-unet.ocn.ne.jp.
[86400] 157.158.186.221.in-addr.arpa domain name pointer pc5.hardi006-unet.ocn.ne.jp.
[86400] 158.158.186.221.in-addr.arpa domain name pointer pc6.hardi006-unet.ocn.ne.jp.
Host 159.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 160.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 161.158.186.221.in-addr.arpa domain name pointer md1.studio-unet.ocn.ne.jp.
[86400] 162.158.186.221.in-addr.arpa domain name pointer md2.studio-unet.ocn.ne.jp.
[86400] 163.158.186.221.in-addr.arpa domain name pointer md3.studio-unet.ocn.ne.jp.
[86400] 164.158.186.221.in-addr.arpa domain name pointer md4.studio-unet.ocn.ne.jp.
[86400] 165.158.186.221.in-addr.arpa domain name pointer md5.studio-unet.ocn.ne.jp.
[86400] 166.158.186.221.in-addr.arpa domain name pointer md6.studio-unet.ocn.ne.jp.
Host 167.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 168.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 169.158.186.221.in-addr.arpa domain name pointer pc1.jesco-001-unet.ocn.ne.jp.
[86400] 170.158.186.221.in-addr.arpa domain name pointer pc2.jesco-001-unet.ocn.ne.jp.
[86400] 171.158.186.221.in-addr.arpa domain name pointer pc3.jesco-001-unet.ocn.ne.jp.
[86400] 172.158.186.221.in-addr.arpa domain name pointer pc4.jesco-001-unet.ocn.ne.jp.
[86400] 173.158.186.221.in-addr.arpa domain name pointer pc5.jesco-001-unet.ocn.ne.jp.
[86400] 174.158.186.221.in-addr.arpa domain name pointer pc6.jesco-001-unet.ocn.ne.jp.
Host 175.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[604800] 176.158.186.221.in-addr.arpa domain name pointer net.olab.org.
[604800] 177.158.186.221.in-addr.arpa domain name pointer ppp001.olab.org.
[102615] 178.158.186.221.in-addr.arpa domain name pointer ppp002.olab.org.
[604800] 179.158.186.221.in-addr.arpa domain name pointer ppp003.olab.org.
[604800] 180.158.186.221.in-addr.arpa domain name pointer ppp004.olab.org.
[604800] 181.158.186.221.in-addr.arpa domain name pointer ppp005.olab.org.
[604800] 182.158.186.221.in-addr.arpa domain name pointer ppp006.olab.org.
Host 183.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 184.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 185.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 186.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 187.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 188.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 189.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 190.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 191.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 192.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 193.158.186.221.in-addr.arpa domain name pointer pc1.ad5-1-unet.ocn.ne.jp.
[86400] 194.158.186.221.in-addr.arpa domain name pointer pc2.ad5-1-unet.ocn.ne.jp.
[86400] 195.158.186.221.in-addr.arpa domain name pointer pc3.ad5-1-unet.ocn.ne.jp.
[86400] 196.158.186.221.in-addr.arpa domain name pointer pc4.ad5-1-unet.ocn.ne.jp.
[86400] 197.158.186.221.in-addr.arpa domain name pointer pc5.ad5-1-unet.ocn.ne.jp.
[86400] 198.158.186.221.in-addr.arpa domain name pointer pc6.ad5-1-unet.ocn.ne.jp.
Host 199.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[18141] 200.158.186.221.in-addr.arpa domain name pointer yanet.co.jp.
[86400] 201.158.186.221.in-addr.arpa domain name pointer host221186158201.yanet.co.jp.
[86400] 202.158.186.221.in-addr.arpa domain name pointer host221186158202.yanet.co.jp.
[86400] 203.158.186.221.in-addr.arpa domain name pointer host221186158203.yanet.co.jp.
[86400] 204.158.186.221.in-addr.arpa domain name pointer host221186158204.yanet.co.jp.
[86400] 205.158.186.221.in-addr.arpa domain name pointer host221186158205.yanet.co.jp.
[86400] 206.158.186.221.in-addr.arpa domain name pointer host221186158206.yanet.co.jp.
Host 207.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 208.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[23611] 209.158.186.221.in-addr.arpa domain name pointer gw1.zcc.co.jp.
[86400] 210.158.186.221.in-addr.arpa domain name pointer ns1.zcc.co.jp.
Host 211.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 212.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 213.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 214.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 215.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 216.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 217.158.186.221.in-addr.arpa domain name pointer ac01.artpresto.co.jp.
[86400] 218.158.186.221.in-addr.arpa domain name pointer artpresto.co.jp.
[86400] 219.158.186.221.in-addr.arpa domain name pointer clt.artpresto.co.jp.
Host 220.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 221.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 222.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 223.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 224.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 225.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 226.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 227.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 228.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 229.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 230.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 231.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 232.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 233.158.186.221.in-addr.arpa domain name pointer pc1.nipponrentacar-unet.ocn.ne.jp.
[86400] 234.158.186.221.in-addr.arpa domain name pointer pc2.nipponrentacar-unet.ocn.ne.jp.
[86400] 235.158.186.221.in-addr.arpa domain name pointer pc3.nipponrentacar-unet.ocn.ne.jp.
[86400] 236.158.186.221.in-addr.arpa domain name pointer pc4.nipponrentacar-unet.ocn.ne.jp.
[86400] 237.158.186.221.in-addr.arpa domain name pointer pc5.nipponrentacar-unet.ocn.ne.jp.
[86400] 238.158.186.221.in-addr.arpa domain name pointer pc6.nipponrentacar-unet.ocn.ne.jp.
Host 239.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 240.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 241.158.186.221.in-addr.arpa domain name pointer gw2.ruru.ne.jp.
[86400] 242.158.186.221.in-addr.arpa domain name pointer ms2.ruru.ne.jp.
[86400] 243.158.186.221.in-addr.arpa domain name pointer park.ruru.ne.jp.
[86400] 244.158.186.221.in-addr.arpa domain name pointer rose.ruru.ne.jp.
[86400] 245.158.186.221.in-addr.arpa domain name pointer star.ruru.ne.jp.
[86400] 246.158.186.221.in-addr.arpa domain name pointer harp.ruru.ne.jp.
[86400] 247.158.186.221.in-addr.arpa domain name pointer dome.ruru.ne.jp.
[86400] 248.158.186.221.in-addr.arpa domain name pointer town.ruru.ne.jp.
Host 249.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 250.158.186.221.in-addr.arpa domain name pointer gate.ruru.ne.jp.
Host 251.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
Host 252.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)
[86400] 253.158.186.221.in-addr.arpa domain name pointer cats.ruru.ne.jp.
[86400] 254.158.186.221.in-addr.arpa domain name pointer gw4.ruru.ne.jp.
Host 255.158.186.221.in-addr.arpa not found: 3(NXDOMAIN)