The IP address 205.58.21 is provided by DoD Network Information Center, it's belong to the CDIR (Classless Inter-Domain Routing) 205.56.0.0/13 (range 205.56.0.0 to 205.63.255.255). The autonomous system number (ASN) is 721.
| ASN | 721 |
| IP starting by | 205.56.0.0 |
| IP ending by | 205.63.255.255 |
| ASN Name | DoD Network Information Center |
| CDIR | 205.56.0.0/13 |
| Numerical IP | |
| Registry | arin |
| Last update | 22/01/2020 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Salt Lake City | 40.7636 | -111.8418 | 2020-01-22 |
| MaxMind | US | United States | - | Portsmouth | 36.804 | -76.3266 | 2020-01-22 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 205.58.21.0 | 3443135744 | 0 |
| 205.58.21.1 | 3443135745 | 0 |
| 205.58.21.2 | 3443135746 | 0 |
| 205.58.21.3 | 3443135747 | 0 |
| 205.58.21.4 | 3443135748 | 0 |
| 205.58.21.5 | 3443135749 | 0 |
| 205.58.21.6 | 3443135750 | 0 |
| 205.58.21.7 | 3443135751 | 0 |
| 205.58.21.8 | 3443135752 | 0 |
| 205.58.21.9 | 3443135753 | 0 |
| 205.58.21.10 | 3443135754 | 0 |
| 205.58.21.11 | 3443135755 | 0 |
| 205.58.21.12 | 3443135756 | 0 |
| 205.58.21.13 | 3443135757 | 0 |
| 205.58.21.14 | 3443135758 | 0 |
| 205.58.21.15 | 3443135759 | 0 |
| 205.58.21.16 | 3443135760 | 0 |
| 205.58.21.17 | 3443135761 | 0 |
| 205.58.21.18 | 3443135762 | 0 |
| 205.58.21.19 | 3443135763 | 0 |
| 205.58.21.20 | 3443135764 | 0 |
| 205.58.21.21 | 3443135765 | 0 |
| 205.58.21.22 | 3443135766 | 0 |
| 205.58.21.23 | 3443135767 | 0 |
| 205.58.21.24 | 3443135768 | 0 |
| 205.58.21.25 | 3443135769 | 0 |
| 205.58.21.26 | 3443135770 | 0 |
| 205.58.21.27 | 3443135771 | 0 |
| 205.58.21.28 | 3443135772 | 0 |
| 205.58.21.29 | 3443135773 | 0 |
| 205.58.21.30 | 3443135774 | 0 |
| 205.58.21.31 | 3443135775 | 0 |
| 205.58.21.32 | 3443135776 | 0 |
| 205.58.21.33 | 3443135777 | 0 |
| 205.58.21.34 | 3443135778 | 0 |
| 205.58.21.35 | 3443135779 | 0 |
| 205.58.21.36 | 3443135780 | 0 |
| 205.58.21.37 | 3443135781 | 0 |
| 205.58.21.38 | 3443135782 | 0 |
| 205.58.21.39 | 3443135783 | 0 |
| 205.58.21.40 | 3443135784 | 0 |
| 205.58.21.41 | 3443135785 | 0 |
| 205.58.21.42 | 3443135786 | 0 |
| 205.58.21.43 | 3443135787 | 0 |
| 205.58.21.44 | 3443135788 | 0 |
| 205.58.21.45 | 3443135789 | 0 |
| 205.58.21.46 | 3443135790 | 0 |
| 205.58.21.47 | 3443135791 | 0 |
| 205.58.21.48 | 3443135792 | 0 |
| 205.58.21.49 | 3443135793 | 0 |
| 205.58.21.50 | 3443135794 | 0 |
| 205.58.21.51 | 3443135795 | 0 |
| 205.58.21.52 | 3443135796 | 0 |
| 205.58.21.53 | 3443135797 | 0 |
| 205.58.21.54 | 3443135798 | 0 |
| 205.58.21.55 | 3443135799 | 0 |
| 205.58.21.56 | 3443135800 | 0 |
| 205.58.21.57 | 3443135801 | 0 |
| 205.58.21.58 | 3443135802 | 0 |
| 205.58.21.59 | 3443135803 | 0 |
| 205.58.21.60 | 3443135804 | 0 |
| 205.58.21.61 | 3443135805 | 0 |
| 205.58.21.62 | 3443135806 | 0 |
| 205.58.21.63 | 3443135807 | 0 |
| 205.58.21.64 | 3443135808 | 0 |
| 205.58.21.65 | 3443135809 | 0 |
| 205.58.21.66 | 3443135810 | 0 |
| 205.58.21.67 | 3443135811 | 0 |
| 205.58.21.68 | 3443135812 | 0 |
| 205.58.21.69 | 3443135813 | 0 |
| 205.58.21.70 | 3443135814 | 0 |
| 205.58.21.71 | 3443135815 | 0 |
| 205.58.21.72 | 3443135816 | 0 |
| 205.58.21.73 | 3443135817 | 0 |
| 205.58.21.74 | 3443135818 | 0 |
| 205.58.21.75 | 3443135819 | 0 |
| 205.58.21.76 | 3443135820 | 0 |
| 205.58.21.77 | 3443135821 | 0 |
| 205.58.21.78 | 3443135822 | 0 |
| 205.58.21.79 | 3443135823 | 0 |
| 205.58.21.80 | 3443135824 | 0 |
| 205.58.21.81 | 3443135825 | 0 |
| 205.58.21.82 | 3443135826 | 0 |
| 205.58.21.83 | 3443135827 | 0 |
| 205.58.21.84 | 3443135828 | 0 |
| 205.58.21.85 | 3443135829 | 0 |