Les adresses IP débutant par 55.87.21 sont fournies par DoD Network Information Center, elles appartiennent au CIDR (Classless Inter-Domain Routing) 55.0.0.0/8, le bloc IP comprant les adresses de 55.0.0.0 à 55.255.255.255). Le numéro de système autonome (ASN) est 721.
| ASN | 721 |
| IP commençant par | 55.0.0.0 |
| IP se terminant par | 55.255.255.255 |
| Nom ASN | DoD Network Information Center |
| CDIR | 55.0.0.0/8 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 16/04/2020 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Raleigh | 35,8428 | -78,6337 | 2020-04-16 |
| MaxMind | US | États-Unis | - | Fort Huachuca | 31,5273 | -110,3607 | 2020-04-16 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 55.87.21.0 | 928453888 | 0 |
| 55.87.21.1 | 928453889 | 0 |
| 55.87.21.2 | 928453890 | 0 |
| 55.87.21.3 | 928453891 | 0 |
| 55.87.21.4 | 928453892 | 0 |
| 55.87.21.5 | 928453893 | 0 |
| 55.87.21.6 | 928453894 | 0 |
| 55.87.21.7 | 928453895 | 0 |
| 55.87.21.8 | 928453896 | 0 |
| 55.87.21.9 | 928453897 | 0 |
| 55.87.21.10 | 928453898 | 0 |
| 55.87.21.11 | 928453899 | 0 |
| 55.87.21.12 | 928453900 | 0 |
| 55.87.21.13 | 928453901 | 0 |
| 55.87.21.14 | 928453902 | 0 |
| 55.87.21.15 | 928453903 | 0 |
| 55.87.21.16 | 928453904 | 0 |
| 55.87.21.17 | 928453905 | 0 |
| 55.87.21.18 | 928453906 | 0 |
| 55.87.21.19 | 928453907 | 0 |
| 55.87.21.20 | 928453908 | 0 |
| 55.87.21.21 | 928453909 | 0 |
| 55.87.21.22 | 928453910 | 0 |
| 55.87.21.23 | 928453911 | 0 |
| 55.87.21.24 | 928453912 | 0 |
| 55.87.21.25 | 928453913 | 0 |
| 55.87.21.26 | 928453914 | 0 |
| 55.87.21.27 | 928453915 | 0 |
| 55.87.21.28 | 928453916 | 0 |
| 55.87.21.29 | 928453917 | 0 |
| 55.87.21.30 | 928453918 | 0 |
| 55.87.21.31 | 928453919 | 0 |
| 55.87.21.32 | 928453920 | 0 |
| 55.87.21.33 | 928453921 | 0 |
| 55.87.21.34 | 928453922 | 0 |
| 55.87.21.35 | 928453923 | 0 |
| 55.87.21.36 | 928453924 | 0 |
| 55.87.21.37 | 928453925 | 0 |
| 55.87.21.38 | 928453926 | 0 |
| 55.87.21.39 | 928453927 | 0 |
| 55.87.21.40 | 928453928 | 0 |
| 55.87.21.41 | 928453929 | 0 |
| 55.87.21.42 | 928453930 | 0 |
| 55.87.21.43 | 928453931 | 0 |
| 55.87.21.44 | 928453932 | 0 |
| 55.87.21.45 | 928453933 | 0 |
| 55.87.21.46 | 928453934 | 0 |
| 55.87.21.47 | 928453935 | 0 |
| 55.87.21.48 | 928453936 | 0 |
| 55.87.21.49 | 928453937 | 0 |
| 55.87.21.50 | 928453938 | 0 |
| 55.87.21.51 | 928453939 | 0 |
| 55.87.21.52 | 928453940 | 0 |
| 55.87.21.53 | 928453941 | 0 |
| 55.87.21.54 | 928453942 | 0 |
| 55.87.21.55 | 928453943 | 0 |
| 55.87.21.56 | 928453944 | 0 |
| 55.87.21.57 | 928453945 | 0 |
| 55.87.21.58 | 928453946 | 0 |
| 55.87.21.59 | 928453947 | 0 |
| 55.87.21.60 | 928453948 | 0 |
| 55.87.21.61 | 928453949 | 0 |
| 55.87.21.62 | 928453950 | 0 |
| 55.87.21.63 | 928453951 | 0 |
| 55.87.21.64 | 928453952 | 0 |
| 55.87.21.65 | 928453953 | 0 |
| 55.87.21.66 | 928453954 | 0 |
| 55.87.21.67 | 928453955 | 0 |
| 55.87.21.68 | 928453956 | 0 |
| 55.87.21.69 | 928453957 | 0 |
| 55.87.21.70 | 928453958 | 0 |
| 55.87.21.71 | 928453959 | 0 |
| 55.87.21.72 | 928453960 | 0 |
| 55.87.21.73 | 928453961 | 0 |
| 55.87.21.74 | 928453962 | 0 |
| 55.87.21.75 | 928453963 | 0 |
| 55.87.21.76 | 928453964 | 0 |
| 55.87.21.77 | 928453965 | 0 |
| 55.87.21.78 | 928453966 | 0 |
| 55.87.21.79 | 928453967 | 0 |
| 55.87.21.80 | 928453968 | 0 |
| 55.87.21.81 | 928453969 | 0 |
| 55.87.21.82 | 928453970 | 0 |
| 55.87.21.83 | 928453971 | 0 |
| 55.87.21.84 | 928453972 | 0 |
| 55.87.21.85 | 928453973 | 0 |