The IP address 131.77.20 is provided by DoD Network Information Center, it's belong to the CDIR (Classless Inter-Domain Routing) 131.76.0.0/14 (range 131.76.0.0 to 131.79.255.255). The autonomous system number (ASN) is 721.
| ASN | 721 |
| IP starting by | 131.76.0.0 |
| IP ending by | 131.79.255.255 |
| ASN Name | DoD Network Information Center |
| CDIR | 131.76.0.0/14 |
| Numerical IP | |
| Registry | arin |
| Last update | 11/12/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Phoenix | 33.4484 | -112.074 | 2018-12-10 |
| MaxMind | US | United States | - | - | 37.751 | -97.822 | 2018-12-10 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 131.77.20.0 | 2202866688 | 0 |
| 131.77.20.1 | 2202866689 | 0 |
| 131.77.20.2 | 2202866690 | 0 |
| 131.77.20.3 | 2202866691 | 0 |
| 131.77.20.4 | 2202866692 | 0 |
| 131.77.20.5 | 2202866693 | 0 |
| 131.77.20.6 | 2202866694 | 0 |
| 131.77.20.7 | 2202866695 | 0 |
| 131.77.20.8 | 2202866696 | 0 |
| 131.77.20.9 | 2202866697 | 0 |
| 131.77.20.10 | 2202866698 | 0 |
| 131.77.20.11 | 2202866699 | 0 |
| 131.77.20.12 | 2202866700 | 0 |
| 131.77.20.13 | 2202866701 | 0 |
| 131.77.20.14 | 2202866702 | 0 |
| 131.77.20.15 | 2202866703 | 0 |
| 131.77.20.16 | 2202866704 | 0 |
| 131.77.20.17 | 2202866705 | 0 |
| 131.77.20.18 | 2202866706 | 0 |
| 131.77.20.19 | 2202866707 | 0 |
| 131.77.20.20 | 2202866708 | 0 |
| 131.77.20.21 | 2202866709 | 0 |
| 131.77.20.22 | 2202866710 | 0 |
| 131.77.20.23 | 2202866711 | 0 |
| 131.77.20.24 | 2202866712 | 0 |
| 131.77.20.25 | 2202866713 | 0 |
| 131.77.20.26 | 2202866714 | 0 |
| 131.77.20.27 | 2202866715 | 0 |
| 131.77.20.28 | 2202866716 | 0 |
| 131.77.20.29 | 2202866717 | 0 |
| 131.77.20.30 | 2202866718 | 0 |
| 131.77.20.31 | 2202866719 | 0 |
| 131.77.20.32 | 2202866720 | 0 |
| 131.77.20.33 | 2202866721 | 0 |
| 131.77.20.34 | 2202866722 | 0 |
| 131.77.20.35 | 2202866723 | 0 |
| 131.77.20.36 | 2202866724 | 0 |
| 131.77.20.37 | 2202866725 | 0 |
| 131.77.20.38 | 2202866726 | 0 |
| 131.77.20.39 | 2202866727 | 0 |
| 131.77.20.40 | 2202866728 | 0 |
| 131.77.20.41 | 2202866729 | 0 |
| 131.77.20.42 | 2202866730 | 0 |
| 131.77.20.43 | 2202866731 | 0 |
| 131.77.20.44 | 2202866732 | 0 |
| 131.77.20.45 | 2202866733 | 0 |
| 131.77.20.46 | 2202866734 | 0 |
| 131.77.20.47 | 2202866735 | 0 |
| 131.77.20.48 | 2202866736 | 0 |
| 131.77.20.49 | 2202866737 | 0 |
| 131.77.20.50 | 2202866738 | 0 |
| 131.77.20.51 | 2202866739 | 0 |
| 131.77.20.52 | 2202866740 | 0 |
| 131.77.20.53 | 2202866741 | 0 |
| 131.77.20.54 | 2202866742 | 0 |
| 131.77.20.55 | 2202866743 | 0 |
| 131.77.20.56 | 2202866744 | 0 |
| 131.77.20.57 | 2202866745 | 0 |
| 131.77.20.58 | 2202866746 | 0 |
| 131.77.20.59 | 2202866747 | 0 |
| 131.77.20.60 | 2202866748 | 0 |
| 131.77.20.61 | 2202866749 | 0 |
| 131.77.20.62 | 2202866750 | 0 |
| 131.77.20.63 | 2202866751 | 0 |
| 131.77.20.64 | 2202866752 | 0 |
| 131.77.20.65 | 2202866753 | 0 |
| 131.77.20.66 | 2202866754 | 0 |
| 131.77.20.67 | 2202866755 | 0 |
| 131.77.20.68 | 2202866756 | 0 |
| 131.77.20.69 | 2202866757 | 0 |
| 131.77.20.70 | 2202866758 | 0 |
| 131.77.20.71 | 2202866759 | 0 |
| 131.77.20.72 | 2202866760 | 0 |
| 131.77.20.73 | 2202866761 | 0 |
| 131.77.20.74 | 2202866762 | 0 |
| 131.77.20.75 | 2202866763 | 0 |
| 131.77.20.76 | 2202866764 | 0 |
| 131.77.20.77 | 2202866765 | 0 |
| 131.77.20.78 | 2202866766 | 0 |
| 131.77.20.79 | 2202866767 | 0 |
| 131.77.20.80 | 2202866768 | 0 |
| 131.77.20.81 | 2202866769 | 0 |
| 131.77.20.82 | 2202866770 | 0 |
| 131.77.20.83 | 2202866771 | 0 |
| 131.77.20.84 | 2202866772 | 0 |
| 131.77.20.85 | 2202866773 | 0 |