Kōfu est une ville de 190000 habitants. Nous avons compté 190000 IPs avec base de données Maxmind. Kōfu a 201728 par habitant.
| ASN | ASN Id | Total IP |
| NTT Communications Corporation | AS4713 | 76958 |
| KDDI Corporation | AS2516 | 30684 |
| SoftBank BB Corp. | AS17676 | 28128 |
| BIGLOBE Inc. | AS2518 | 16616 |
| Tokai Communications Corporation | AS10010 | 11766 |
| Nihon Network Service Co, .Ltd. | AS17530 | 9210 |
| Research Organization of Information and Systems, National Institute of Informatics | AS2907 | 9074 |
| Digital Alliance Co.,Ltd. | AS55385 | 7156 |
| FreeBit Co.,Ltd. | AS10013 | 4094 |
| So-net Entertainment Corporation | AS2527 | 3576 |
| Wingtechnology Communications, Inc. | AS17683 | 2046 |
| Asahi Net | AS4685 | 1274 |
| Internet Initiative Japan Inc. | AS2497 | 764 |
| NTT PC Communications, Inc. | AS2514 | 510 |