L'indirizzo IP 121.87.39 è fornito da K-Opticom Corporation, che è di proprietà del CIDR (Classless Inter-Domain Routing) 121.84.0.0/14, IP tra 121.84.0.0 a 121.87.255.255 ). Il numero di sistema autonomo (ASN) è 17511.
| ASN | 17511 |
| IP inizia con | 121.84.0.0 |
| IP finale con | 121.87.255.255 |
| ASN Nome | K-Opticom Corporation |
| CDIR | 121.84.0.0/14 |
| IP numerico | |
| Registe | apnic |
| Ultimo aggiornamento | 11/07/2017 |

| Codice paese | Paese | Regione | Città | Latitude | Longitude | Ultimo aggiornamento | |
| IP2Location | JP | Japan | - | Osaka | 34,6939 | 135,5022 | 2017-07-11 |
| MaxMind | JP | Japan | - | Osaka | 34,6864 | 135,52 | 2017-07-11 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.87.39.0 | 2035754752 | 0 |
| 121.87.39.1 | 2035754753 | 0 |
| 121.87.39.2 | 2035754754 | 0 |
| 121.87.39.3 | 2035754755 | 0 |
| 121.87.39.4 | 2035754756 | 0 |
| 121.87.39.5 | 2035754757 | 0 |
| 121.87.39.6 | 2035754758 | 0 |
| 121.87.39.7 | 2035754759 | 0 |
| 121.87.39.8 | 2035754760 | 0 |
| 121.87.39.9 | 2035754761 | 0 |
| 121.87.39.10 | 2035754762 | 0 |
| 121.87.39.11 | 2035754763 | 0 |
| 121.87.39.12 | 2035754764 | 0 |
| 121.87.39.13 | 2035754765 | 0 |
| 121.87.39.14 | 2035754766 | 0 |
| 121.87.39.15 | 2035754767 | 0 |
| 121.87.39.16 | 2035754768 | 0 |
| 121.87.39.17 | 2035754769 | 0 |
| 121.87.39.18 | 2035754770 | 0 |
| 121.87.39.19 | 2035754771 | 0 |
| 121.87.39.20 | 2035754772 | 0 |
| 121.87.39.21 | 2035754773 | 0 |
| 121.87.39.22 | 2035754774 | 0 |
| 121.87.39.23 | 2035754775 | 0 |
| 121.87.39.24 | 2035754776 | 0 |
| 121.87.39.25 | 2035754777 | 0 |
| 121.87.39.26 | 2035754778 | 0 |
| 121.87.39.27 | 2035754779 | 0 |
| 121.87.39.28 | 2035754780 | 0 |
| 121.87.39.29 | 2035754781 | 0 |
| 121.87.39.30 | 2035754782 | 0 |
| 121.87.39.31 | 2035754783 | 0 |
| 121.87.39.32 | 2035754784 | 0 |
| 121.87.39.33 | 2035754785 | 0 |
| 121.87.39.34 | 2035754786 | 0 |
| 121.87.39.35 | 2035754787 | 0 |
| 121.87.39.36 | 2035754788 | 0 |
| 121.87.39.37 | 2035754789 | 0 |
| 121.87.39.38 | 2035754790 | 0 |
| 121.87.39.39 | 2035754791 | 0 |
| 121.87.39.40 | 2035754792 | 0 |
| 121.87.39.41 | 2035754793 | 0 |
| 121.87.39.42 | 2035754794 | 0 |
| 121.87.39.43 | 2035754795 | 0 |
| 121.87.39.44 | 2035754796 | 0 |
| 121.87.39.45 | 2035754797 | 0 |
| 121.87.39.46 | 2035754798 | 0 |
| 121.87.39.47 | 2035754799 | 0 |
| 121.87.39.48 | 2035754800 | 0 |
| 121.87.39.49 | 2035754801 | 0 |
| 121.87.39.50 | 2035754802 | 0 |
| 121.87.39.51 | 2035754803 | 0 |
| 121.87.39.52 | 2035754804 | 0 |
| 121.87.39.53 | 2035754805 | 0 |
| 121.87.39.54 | 2035754806 | 0 |
| 121.87.39.55 | 2035754807 | 0 |
| 121.87.39.56 | 2035754808 | 0 |
| 121.87.39.57 | 2035754809 | 0 |
| 121.87.39.58 | 2035754810 | 0 |
| 121.87.39.59 | 2035754811 | 0 |
| 121.87.39.60 | 2035754812 | 0 |
| 121.87.39.61 | 2035754813 | 0 |
| 121.87.39.62 | 2035754814 | 0 |
| 121.87.39.63 | 2035754815 | 0 |
| 121.87.39.64 | 2035754816 | 0 |
| 121.87.39.65 | 2035754817 | 0 |
| 121.87.39.66 | 2035754818 | 0 |
| 121.87.39.67 | 2035754819 | 0 |
| 121.87.39.68 | 2035754820 | 0 |
| 121.87.39.69 | 2035754821 | 0 |
| 121.87.39.70 | 2035754822 | 0 |
| 121.87.39.71 | 2035754823 | 0 |
| 121.87.39.72 | 2035754824 | 0 |
| 121.87.39.73 | 2035754825 | 0 |
| 121.87.39.74 | 2035754826 | 0 |
| 121.87.39.75 | 2035754827 | 0 |
| 121.87.39.76 | 2035754828 | 0 |
| 121.87.39.77 | 2035754829 | 0 |
| 121.87.39.78 | 2035754830 | 0 |
| 121.87.39.79 | 2035754831 | 0 |
| 121.87.39.80 | 2035754832 | 0 |
| 121.87.39.81 | 2035754833 | 0 |
| 121.87.39.82 | 2035754834 | 0 |
| 121.87.39.83 | 2035754835 | 0 |
| 121.87.39.84 | 2035754836 | 0 |
| 121.87.39.85 | 2035754837 | 0 |