L'indirizzo IP 121.80.16 è fornito da K-Opticom Corporation, che è di proprietà del CIDR (Classless Inter-Domain Routing) 121.80.0.0/14, IP tra 121.80.0.0 a 121.83.255.255 ). Il numero di sistema autonomo (ASN) è 17511.
| ASN | 17511 |
| IP inizia con | 121.80.0.0 |
| IP finale con | 121.83.255.255 |
| ASN Nome | K-Opticom Corporation |
| CDIR | 121.80.0.0/14 |
| IP numerico | |
| Registe | apnic |
| Ultimo aggiornamento | 14/10/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | JP | Japan | - | Otsu | 35,017 | 135,85 | 2017-10-14 |
| MaxMind | JP | Japan | - | - | 35,1089 | 136,1792 | 2017-10-14 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.80.16.0 | 2035290112 | 0 |
| 121.80.16.1 | 2035290113 | 0 |
| 121.80.16.2 | 2035290114 | 0 |
| 121.80.16.3 | 2035290115 | 0 |
| 121.80.16.4 | 2035290116 | 0 |
| 121.80.16.5 | 2035290117 | 0 |
| 121.80.16.6 | 2035290118 | 0 |
| 121.80.16.7 | 2035290119 | 0 |
| 121.80.16.8 | 2035290120 | 0 |
| 121.80.16.9 | 2035290121 | 0 |
| 121.80.16.10 | 2035290122 | 0 |
| 121.80.16.11 | 2035290123 | 0 |
| 121.80.16.12 | 2035290124 | 0 |
| 121.80.16.13 | 2035290125 | 0 |
| 121.80.16.14 | 2035290126 | 0 |
| 121.80.16.15 | 2035290127 | 0 |
| 121.80.16.16 | 2035290128 | 0 |
| 121.80.16.17 | 2035290129 | 0 |
| 121.80.16.18 | 2035290130 | 0 |
| 121.80.16.19 | 2035290131 | 0 |
| 121.80.16.20 | 2035290132 | 0 |
| 121.80.16.21 | 2035290133 | 0 |
| 121.80.16.22 | 2035290134 | 0 |
| 121.80.16.23 | 2035290135 | 0 |
| 121.80.16.24 | 2035290136 | 0 |
| 121.80.16.25 | 2035290137 | 0 |
| 121.80.16.26 | 2035290138 | 0 |
| 121.80.16.27 | 2035290139 | 0 |
| 121.80.16.28 | 2035290140 | 0 |
| 121.80.16.29 | 2035290141 | 0 |
| 121.80.16.30 | 2035290142 | 0 |
| 121.80.16.31 | 2035290143 | 0 |
| 121.80.16.32 | 2035290144 | 0 |
| 121.80.16.33 | 2035290145 | 0 |
| 121.80.16.34 | 2035290146 | 0 |
| 121.80.16.35 | 2035290147 | 0 |
| 121.80.16.36 | 2035290148 | 0 |
| 121.80.16.37 | 2035290149 | 0 |
| 121.80.16.38 | 2035290150 | 0 |
| 121.80.16.39 | 2035290151 | 0 |
| 121.80.16.40 | 2035290152 | 0 |
| 121.80.16.41 | 2035290153 | 0 |
| 121.80.16.42 | 2035290154 | 0 |
| 121.80.16.43 | 2035290155 | 0 |
| 121.80.16.44 | 2035290156 | 0 |
| 121.80.16.45 | 2035290157 | 0 |
| 121.80.16.46 | 2035290158 | 0 |
| 121.80.16.47 | 2035290159 | 0 |
| 121.80.16.48 | 2035290160 | 0 |
| 121.80.16.49 | 2035290161 | 0 |
| 121.80.16.50 | 2035290162 | 0 |
| 121.80.16.51 | 2035290163 | 0 |
| 121.80.16.52 | 2035290164 | 0 |
| 121.80.16.53 | 2035290165 | 0 |
| 121.80.16.54 | 2035290166 | 0 |
| 121.80.16.55 | 2035290167 | 0 |
| 121.80.16.56 | 2035290168 | 0 |
| 121.80.16.57 | 2035290169 | 0 |
| 121.80.16.58 | 2035290170 | 0 |
| 121.80.16.59 | 2035290171 | 0 |
| 121.80.16.60 | 2035290172 | 0 |
| 121.80.16.61 | 2035290173 | 0 |
| 121.80.16.62 | 2035290174 | 0 |
| 121.80.16.63 | 2035290175 | 0 |
| 121.80.16.64 | 2035290176 | 0 |
| 121.80.16.65 | 2035290177 | 0 |
| 121.80.16.66 | 2035290178 | 0 |
| 121.80.16.67 | 2035290179 | 0 |
| 121.80.16.68 | 2035290180 | 0 |
| 121.80.16.69 | 2035290181 | 0 |
| 121.80.16.70 | 2035290182 | 0 |
| 121.80.16.71 | 2035290183 | 0 |
| 121.80.16.72 | 2035290184 | 0 |
| 121.80.16.73 | 2035290185 | 0 |
| 121.80.16.74 | 2035290186 | 0 |
| 121.80.16.75 | 2035290187 | 0 |
| 121.80.16.76 | 2035290188 | 0 |
| 121.80.16.77 | 2035290189 | 0 |
| 121.80.16.78 | 2035290190 | 0 |
| 121.80.16.79 | 2035290191 | 0 |
| 121.80.16.80 | 2035290192 | 0 |
| 121.80.16.81 | 2035290193 | 0 |
| 121.80.16.82 | 2035290194 | 0 |
| 121.80.16.83 | 2035290195 | 0 |
| 121.80.16.84 | 2035290196 | 0 |
| 121.80.16.85 | 2035290197 | 0 |