The IP address 128.21.128 is provided by K-Opticom Corporation, it's belong to the CDIR (Classless Inter-Domain Routing) 128.22.0.0/16 (range 128.22.0.0 to 128.22.255.255). The autonomous system number (ASN) is 17511.
| ASN | 17511 |
| IP starting by | 128.22.0.0 |
| IP ending by | 128.22.255.255 |
| ASN Name | K-Opticom Corporation |
| CDIR | 128.22.0.0/16 |
| Numerical IP | |
| Registry | apnic |
| Last update | 13/07/2019 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | JP | Japan | - | Osaka | 34.6939 | 135.5022 | 2019-07-13 |
| MaxMind | JP | Japan | - | - | 35.69 | 139.69 | 2019-07-13 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |