Les adresses IP débutant par 121.195.4 sont fournies par China Education and Research Network Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 121.194.0.0/15, le bloc IP comprant les adresses de 121.194.0.0 à 121.195.255.255). Le numéro de système autonome (ASN) est 4538.
| ASN | 4538 |
| IP commençant par | 121.194.0.0 |
| IP se terminant par | 121.195.255.255 |
| Nom ASN | China Education and Research Network Center |
| CDIR | 121.194.0.0/15 |
| IP numérique | |
| Registe | apnic |
| Dernière mise à jour | 16/09/2019 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | CN | China | - | Beijing | 39,9075 | 116,3972 | 2019-09-15 |
| MaxMind | CN | Chine | - | Beijing | 39,9289 | 116,3883 | 2019-09-15 |
| Whois | CN | - | - | - | 104 | 36 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 121.195.4.0 | 2042823680 | 0 |
| 121.195.4.1 | 2042823681 | 0 |
| 121.195.4.2 | 2042823682 | 0 |
| 121.195.4.3 | 2042823683 | 0 |
| 121.195.4.4 | 2042823684 | 0 |
| 121.195.4.5 | 2042823685 | 0 |
| 121.195.4.6 | 2042823686 | 0 |
| 121.195.4.7 | 2042823687 | 0 |
| 121.195.4.8 | 2042823688 | 0 |
| 121.195.4.9 | 2042823689 | 0 |
| 121.195.4.10 | 2042823690 | 0 |
| 121.195.4.11 | 2042823691 | 0 |
| 121.195.4.12 | 2042823692 | 0 |
| 121.195.4.13 | 2042823693 | 0 |
| 121.195.4.14 | 2042823694 | 0 |
| 121.195.4.15 | 2042823695 | 0 |
| 121.195.4.16 | 2042823696 | 0 |
| 121.195.4.17 | 2042823697 | 0 |
| 121.195.4.18 | 2042823698 | 0 |
| 121.195.4.19 | 2042823699 | 0 |
| 121.195.4.20 | 2042823700 | 0 |
| 121.195.4.21 | 2042823701 | 0 |
| 121.195.4.22 | 2042823702 | 0 |
| 121.195.4.23 | 2042823703 | 0 |
| 121.195.4.24 | 2042823704 | 0 |
| 121.195.4.25 | 2042823705 | 0 |
| 121.195.4.26 | 2042823706 | 0 |
| 121.195.4.27 | 2042823707 | 0 |
| 121.195.4.28 | 2042823708 | 0 |
| 121.195.4.29 | 2042823709 | 0 |
| 121.195.4.30 | 2042823710 | 0 |
| 121.195.4.31 | 2042823711 | 0 |
| 121.195.4.32 | 2042823712 | 0 |
| 121.195.4.33 | 2042823713 | 0 |
| 121.195.4.34 | 2042823714 | 0 |
| 121.195.4.35 | 2042823715 | 0 |
| 121.195.4.36 | 2042823716 | 0 |
| 121.195.4.37 | 2042823717 | 0 |
| 121.195.4.38 | 2042823718 | 0 |
| 121.195.4.39 | 2042823719 | 0 |
| 121.195.4.40 | 2042823720 | 0 |
| 121.195.4.41 | 2042823721 | 0 |
| 121.195.4.42 | 2042823722 | 0 |
| 121.195.4.43 | 2042823723 | 0 |
| 121.195.4.44 | 2042823724 | 0 |
| 121.195.4.45 | 2042823725 | 0 |
| 121.195.4.46 | 2042823726 | 0 |
| 121.195.4.47 | 2042823727 | 0 |
| 121.195.4.48 | 2042823728 | 0 |
| 121.195.4.49 | 2042823729 | 0 |
| 121.195.4.50 | 2042823730 | 0 |
| 121.195.4.51 | 2042823731 | 0 |
| 121.195.4.52 | 2042823732 | 0 |
| 121.195.4.53 | 2042823733 | 0 |
| 121.195.4.54 | 2042823734 | 0 |
| 121.195.4.55 | 2042823735 | 0 |
| 121.195.4.56 | 2042823736 | 0 |
| 121.195.4.57 | 2042823737 | 0 |
| 121.195.4.58 | 2042823738 | 0 |
| 121.195.4.59 | 2042823739 | 0 |
| 121.195.4.60 | 2042823740 | 0 |
| 121.195.4.61 | 2042823741 | 0 |
| 121.195.4.62 | 2042823742 | 0 |
| 121.195.4.63 | 2042823743 | 0 |
| 121.195.4.64 | 2042823744 | 0 |
| 121.195.4.65 | 2042823745 | 0 |
| 121.195.4.66 | 2042823746 | 0 |
| 121.195.4.67 | 2042823747 | 0 |
| 121.195.4.68 | 2042823748 | 0 |
| 121.195.4.69 | 2042823749 | 0 |
| 121.195.4.70 | 2042823750 | 0 |
| 121.195.4.71 | 2042823751 | 0 |
| 121.195.4.72 | 2042823752 | 0 |
| 121.195.4.73 | 2042823753 | 0 |
| 121.195.4.74 | 2042823754 | 0 |
| 121.195.4.75 | 2042823755 | 0 |
| 121.195.4.76 | 2042823756 | 0 |
| 121.195.4.77 | 2042823757 | 0 |
| 121.195.4.78 | 2042823758 | 0 |
| 121.195.4.79 | 2042823759 | 0 |
| 121.195.4.80 | 2042823760 | 0 |
| 121.195.4.81 | 2042823761 | 0 |
| 121.195.4.82 | 2042823762 | 0 |
| 121.195.4.83 | 2042823763 | 0 |
| 121.195.4.84 | 2042823764 | 0 |
| 121.195.4.85 | 2042823765 | 0 |