The IP address 21.5.166 is provided by China Education and Research Network Center, it's belong to the CDIR (Classless Inter-Domain Routing) 22.30.204.0/23 (range 22.30.204.0 to 22.30.205.255). The autonomous system number (ASN) is 4538.
| ASN | 4538 |
| IP starting by | 22.30.204.0 |
| IP ending by | 22.30.205.255 |
| ASN Name | China Education and Research Network Center |
| CDIR | 22.30.204.0/23 |
| Numerical IP | |
| Registry | |
| Last update | 17/04/2020 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Las Vegas | 36.175 | -115.1372 | 2020-04-17 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2020-04-17 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 21.5.166.0 | 352691712 | 0 |
| 21.5.166.1 | 352691713 | 0 |
| 21.5.166.2 | 352691714 | 0 |
| 21.5.166.3 | 352691715 | 0 |
| 21.5.166.4 | 352691716 | 0 |
| 21.5.166.5 | 352691717 | 0 |
| 21.5.166.6 | 352691718 | 0 |
| 21.5.166.7 | 352691719 | 0 |
| 21.5.166.8 | 352691720 | 0 |
| 21.5.166.9 | 352691721 | 0 |
| 21.5.166.10 | 352691722 | 0 |
| 21.5.166.11 | 352691723 | 0 |
| 21.5.166.12 | 352691724 | 0 |
| 21.5.166.13 | 352691725 | 0 |
| 21.5.166.14 | 352691726 | 0 |
| 21.5.166.15 | 352691727 | 0 |
| 21.5.166.16 | 352691728 | 0 |
| 21.5.166.17 | 352691729 | 0 |
| 21.5.166.18 | 352691730 | 0 |
| 21.5.166.19 | 352691731 | 0 |
| 21.5.166.20 | 352691732 | 0 |
| 21.5.166.21 | 352691733 | 0 |
| 21.5.166.22 | 352691734 | 0 |
| 21.5.166.23 | 352691735 | 0 |
| 21.5.166.24 | 352691736 | 0 |
| 21.5.166.25 | 352691737 | 0 |
| 21.5.166.26 | 352691738 | 0 |
| 21.5.166.27 | 352691739 | 0 |
| 21.5.166.28 | 352691740 | 0 |
| 21.5.166.29 | 352691741 | 0 |
| 21.5.166.30 | 352691742 | 0 |
| 21.5.166.31 | 352691743 | 0 |
| 21.5.166.32 | 352691744 | 0 |
| 21.5.166.33 | 352691745 | 0 |
| 21.5.166.34 | 352691746 | 0 |
| 21.5.166.35 | 352691747 | 0 |
| 21.5.166.36 | 352691748 | 0 |
| 21.5.166.37 | 352691749 | 0 |
| 21.5.166.38 | 352691750 | 0 |
| 21.5.166.39 | 352691751 | 0 |
| 21.5.166.40 | 352691752 | 0 |
| 21.5.166.41 | 352691753 | 0 |
| 21.5.166.42 | 352691754 | 0 |
| 21.5.166.43 | 352691755 | 0 |
| 21.5.166.44 | 352691756 | 0 |
| 21.5.166.45 | 352691757 | 0 |
| 21.5.166.46 | 352691758 | 0 |
| 21.5.166.47 | 352691759 | 0 |
| 21.5.166.48 | 352691760 | 0 |
| 21.5.166.49 | 352691761 | 0 |
| 21.5.166.50 | 352691762 | 0 |
| 21.5.166.51 | 352691763 | 0 |
| 21.5.166.52 | 352691764 | 0 |
| 21.5.166.53 | 352691765 | 0 |
| 21.5.166.54 | 352691766 | 0 |
| 21.5.166.55 | 352691767 | 0 |
| 21.5.166.56 | 352691768 | 0 |
| 21.5.166.57 | 352691769 | 0 |
| 21.5.166.58 | 352691770 | 0 |
| 21.5.166.59 | 352691771 | 0 |
| 21.5.166.60 | 352691772 | 0 |
| 21.5.166.61 | 352691773 | 0 |
| 21.5.166.62 | 352691774 | 0 |
| 21.5.166.63 | 352691775 | 0 |
| 21.5.166.64 | 352691776 | 0 |
| 21.5.166.65 | 352691777 | 0 |
| 21.5.166.66 | 352691778 | 0 |
| 21.5.166.67 | 352691779 | 0 |
| 21.5.166.68 | 352691780 | 0 |
| 21.5.166.69 | 352691781 | 0 |
| 21.5.166.70 | 352691782 | 0 |
| 21.5.166.71 | 352691783 | 0 |
| 21.5.166.72 | 352691784 | 0 |
| 21.5.166.73 | 352691785 | 0 |
| 21.5.166.74 | 352691786 | 0 |
| 21.5.166.75 | 352691787 | 0 |
| 21.5.166.76 | 352691788 | 0 |
| 21.5.166.77 | 352691789 | 0 |
| 21.5.166.78 | 352691790 | 0 |
| 21.5.166.79 | 352691791 | 0 |
| 21.5.166.80 | 352691792 | 0 |
| 21.5.166.81 | 352691793 | 0 |
| 21.5.166.82 | 352691794 | 0 |
| 21.5.166.83 | 352691795 | 0 |
| 21.5.166.84 | 352691796 | 0 |
| 21.5.166.85 | 352691797 | 0 |