The IP address 121.81.53 is provided by K-Opticom Corporation, it's belong to the CDIR (Classless Inter-Domain Routing) 121.80.0.0/14 (range 121.80.0.0 to 121.83.255.255). The autonomous system number (ASN) is 17511.
| ASN | 17511 |
| IP starting by | 121.80.0.0 |
| IP ending by | 121.83.255.255 |
| ASN Name | K-Opticom Corporation |
| CDIR | 121.80.0.0/14 |
| Numerical IP | |
| Registry | apnic |
| Last update | 13/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | JP | Japan | - | Kyoto | 35.0117 | 135.7683 | 2017-07-13 |
| MaxMind | JP | Japan | - | Osaka | 34.6864 | 135.52 | 2017-07-13 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.81.53.0 | 2035365120 | 0 |
| 121.81.53.1 | 2035365121 | 0 |
| 121.81.53.2 | 2035365122 | 0 |
| 121.81.53.3 | 2035365123 | 0 |
| 121.81.53.4 | 2035365124 | 0 |
| 121.81.53.5 | 2035365125 | 0 |
| 121.81.53.6 | 2035365126 | 0 |
| 121.81.53.7 | 2035365127 | 0 |
| 121.81.53.8 | 2035365128 | 0 |
| 121.81.53.9 | 2035365129 | 0 |
| 121.81.53.10 | 2035365130 | 0 |
| 121.81.53.11 | 2035365131 | 0 |
| 121.81.53.12 | 2035365132 | 0 |
| 121.81.53.13 | 2035365133 | 0 |
| 121.81.53.14 | 2035365134 | 0 |
| 121.81.53.15 | 2035365135 | 0 |
| 121.81.53.16 | 2035365136 | 0 |
| 121.81.53.17 | 2035365137 | 0 |
| 121.81.53.18 | 2035365138 | 0 |
| 121.81.53.19 | 2035365139 | 0 |
| 121.81.53.20 | 2035365140 | 0 |
| 121.81.53.21 | 2035365141 | 0 |
| 121.81.53.22 | 2035365142 | 0 |
| 121.81.53.23 | 2035365143 | 0 |
| 121.81.53.24 | 2035365144 | 0 |
| 121.81.53.25 | 2035365145 | 0 |
| 121.81.53.26 | 2035365146 | 0 |
| 121.81.53.27 | 2035365147 | 0 |
| 121.81.53.28 | 2035365148 | 0 |
| 121.81.53.29 | 2035365149 | 0 |
| 121.81.53.30 | 2035365150 | 0 |
| 121.81.53.31 | 2035365151 | 0 |
| 121.81.53.32 | 2035365152 | 0 |
| 121.81.53.33 | 2035365153 | 0 |
| 121.81.53.34 | 2035365154 | 0 |
| 121.81.53.35 | 2035365155 | 0 |
| 121.81.53.36 | 2035365156 | 0 |
| 121.81.53.37 | 2035365157 | 0 |
| 121.81.53.38 | 2035365158 | 0 |
| 121.81.53.39 | 2035365159 | 0 |
| 121.81.53.40 | 2035365160 | 0 |
| 121.81.53.41 | 2035365161 | 0 |
| 121.81.53.42 | 2035365162 | 0 |
| 121.81.53.43 | 2035365163 | 0 |
| 121.81.53.44 | 2035365164 | 0 |
| 121.81.53.45 | 2035365165 | 0 |
| 121.81.53.46 | 2035365166 | 0 |
| 121.81.53.47 | 2035365167 | 0 |
| 121.81.53.48 | 2035365168 | 0 |
| 121.81.53.49 | 2035365169 | 0 |
| 121.81.53.50 | 2035365170 | 0 |
| 121.81.53.51 | 2035365171 | 0 |
| 121.81.53.52 | 2035365172 | 0 |
| 121.81.53.53 | 2035365173 | 0 |
| 121.81.53.54 | 2035365174 | 0 |
| 121.81.53.55 | 2035365175 | 0 |
| 121.81.53.56 | 2035365176 | 0 |
| 121.81.53.57 | 2035365177 | 0 |
| 121.81.53.58 | 2035365178 | 0 |
| 121.81.53.59 | 2035365179 | 0 |
| 121.81.53.60 | 2035365180 | 0 |
| 121.81.53.61 | 2035365181 | 0 |
| 121.81.53.62 | 2035365182 | 0 |
| 121.81.53.63 | 2035365183 | 0 |
| 121.81.53.64 | 2035365184 | 0 |
| 121.81.53.65 | 2035365185 | 0 |
| 121.81.53.66 | 2035365186 | 0 |
| 121.81.53.67 | 2035365187 | 0 |
| 121.81.53.68 | 2035365188 | 0 |
| 121.81.53.69 | 2035365189 | 0 |
| 121.81.53.70 | 2035365190 | 0 |
| 121.81.53.71 | 2035365191 | 0 |
| 121.81.53.72 | 2035365192 | 0 |
| 121.81.53.73 | 2035365193 | 0 |
| 121.81.53.74 | 2035365194 | 0 |
| 121.81.53.75 | 2035365195 | 0 |
| 121.81.53.76 | 2035365196 | 0 |
| 121.81.53.77 | 2035365197 | 0 |
| 121.81.53.78 | 2035365198 | 0 |
| 121.81.53.79 | 2035365199 | 0 |
| 121.81.53.80 | 2035365200 | 0 |
| 121.81.53.81 | 2035365201 | 0 |
| 121.81.53.82 | 2035365202 | 0 |
| 121.81.53.83 | 2035365203 | 0 |
| 121.81.53.84 | 2035365204 | 0 |
| 121.81.53.85 | 2035365205 | 0 |