Les adresses IP débutant par 121.2.158 sont fournies par So-net Entertainment Corporation, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.2.0.0/15, le bloc IP comprant les adresses de 121.2.0.0 à 121.3.255.255). Le numéro de système autonome (ASN) est 2527.
| ASN | 2527 |
| IP commençant par | 121.2.0.0 |
| IP se terminant par | 121.3.255.255 |
| Nom ASN | So-net Entertainment Corporation |
| CDIR | 121.2.0.0/15 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 11/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | JP | Japan | - | Tokyo | 35,6895 | 139,6917 | 2017-08-11 |
| MaxMind | JP | Japon | - | Tokyo | 35,6427 | 139,7677 | 2017-08-11 |
| Whois | JP | - | - | - | 138 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.2.158.0 | 2030214656 | 0 |
| 121.2.158.1 | 2030214657 | 0 |
| 121.2.158.2 | 2030214658 | 0 |
| 121.2.158.3 | 2030214659 | 0 |
| 121.2.158.4 | 2030214660 | 0 |
| 121.2.158.5 | 2030214661 | 0 |
| 121.2.158.6 | 2030214662 | 0 |
| 121.2.158.7 | 2030214663 | 0 |
| 121.2.158.8 | 2030214664 | 0 |
| 121.2.158.9 | 2030214665 | 0 |
| 121.2.158.10 | 2030214666 | 0 |
| 121.2.158.11 | 2030214667 | 0 |
| 121.2.158.12 | 2030214668 | 0 |
| 121.2.158.13 | 2030214669 | 0 |
| 121.2.158.14 | 2030214670 | 0 |
| 121.2.158.15 | 2030214671 | 0 |
| 121.2.158.16 | 2030214672 | 0 |
| 121.2.158.17 | 2030214673 | 0 |
| 121.2.158.18 | 2030214674 | 0 |
| 121.2.158.19 | 2030214675 | 0 |
| 121.2.158.20 | 2030214676 | 0 |
| 121.2.158.21 | 2030214677 | 0 |
| 121.2.158.22 | 2030214678 | 0 |
| 121.2.158.23 | 2030214679 | 0 |
| 121.2.158.24 | 2030214680 | 0 |
| 121.2.158.25 | 2030214681 | 0 |
| 121.2.158.26 | 2030214682 | 0 |
| 121.2.158.27 | 2030214683 | 0 |
| 121.2.158.28 | 2030214684 | 0 |
| 121.2.158.29 | 2030214685 | 0 |
| 121.2.158.30 | 2030214686 | 0 |
| 121.2.158.31 | 2030214687 | 0 |
| 121.2.158.32 | 2030214688 | 0 |
| 121.2.158.33 | 2030214689 | 0 |
| 121.2.158.34 | 2030214690 | 0 |
| 121.2.158.35 | 2030214691 | 0 |
| 121.2.158.36 | 2030214692 | 0 |
| 121.2.158.37 | 2030214693 | 0 |
| 121.2.158.38 | 2030214694 | 0 |
| 121.2.158.39 | 2030214695 | 0 |
| 121.2.158.40 | 2030214696 | 0 |
| 121.2.158.41 | 2030214697 | 0 |
| 121.2.158.42 | 2030214698 | 0 |
| 121.2.158.43 | 2030214699 | 0 |
| 121.2.158.44 | 2030214700 | 0 |
| 121.2.158.45 | 2030214701 | 0 |
| 121.2.158.46 | 2030214702 | 0 |
| 121.2.158.47 | 2030214703 | 0 |
| 121.2.158.48 | 2030214704 | 0 |
| 121.2.158.49 | 2030214705 | 0 |
| 121.2.158.50 | 2030214706 | 0 |
| 121.2.158.51 | 2030214707 | 0 |
| 121.2.158.52 | 2030214708 | 0 |
| 121.2.158.53 | 2030214709 | 0 |
| 121.2.158.54 | 2030214710 | 0 |
| 121.2.158.55 | 2030214711 | 0 |
| 121.2.158.56 | 2030214712 | 0 |
| 121.2.158.57 | 2030214713 | 0 |
| 121.2.158.58 | 2030214714 | 0 |
| 121.2.158.59 | 2030214715 | 0 |
| 121.2.158.60 | 2030214716 | 0 |
| 121.2.158.61 | 2030214717 | 0 |
| 121.2.158.62 | 2030214718 | 0 |
| 121.2.158.63 | 2030214719 | 0 |
| 121.2.158.64 | 2030214720 | 0 |
| 121.2.158.65 | 2030214721 | 0 |
| 121.2.158.66 | 2030214722 | 0 |
| 121.2.158.67 | 2030214723 | 0 |
| 121.2.158.68 | 2030214724 | 0 |
| 121.2.158.69 | 2030214725 | 0 |
| 121.2.158.70 | 2030214726 | 0 |
| 121.2.158.71 | 2030214727 | 0 |
| 121.2.158.72 | 2030214728 | 0 |
| 121.2.158.73 | 2030214729 | 0 |
| 121.2.158.74 | 2030214730 | 0 |
| 121.2.158.75 | 2030214731 | 0 |
| 121.2.158.76 | 2030214732 | 0 |
| 121.2.158.77 | 2030214733 | 0 |
| 121.2.158.78 | 2030214734 | 0 |
| 121.2.158.79 | 2030214735 | 0 |
| 121.2.158.80 | 2030214736 | 0 |
| 121.2.158.81 | 2030214737 | 0 |
| 121.2.158.82 | 2030214738 | 0 |
| 121.2.158.83 | 2030214739 | 0 |
| 121.2.158.84 | 2030214740 | 0 |
| 121.2.158.85 | 2030214741 | 0 |