Les adresses IP débutant par 3.91.72 sont fournies par Level 3 Communications, Inc., elles appartiennent au CIDR (Classless Inter-Domain Routing) 4.0.0.0/8, le bloc IP comprant les adresses de 4.0.0.0 à 4.255.255.255). Le numéro de système autonome (ASN) est 3356.
| ASN | 3356 |
| IP commençant par | 4.0.0.0 |
| IP se terminant par | 4.255.255.255 |
| Nom ASN | Level 3 Communications, Inc. |
| CDIR | 4.0.0.0/8 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 18/08/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Knoxville | 35,9606 | -83,9207 | 2018-08-18 |
| MaxMind | US | États-Unis | - | Fairfield | 41,1412 | -73,2637 | 2018-08-18 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 3.91.72.0 | 56313856 | 0 |
| 3.91.72.1 | 56313857 | 0 |
| 3.91.72.2 | 56313858 | 0 |
| 3.91.72.3 | 56313859 | 0 |
| 3.91.72.4 | 56313860 | 0 |
| 3.91.72.5 | 56313861 | 0 |
| 3.91.72.6 | 56313862 | 0 |
| 3.91.72.7 | 56313863 | 0 |
| 3.91.72.8 | 56313864 | 0 |
| 3.91.72.9 | 56313865 | 0 |
| 3.91.72.10 | 56313866 | 0 |
| 3.91.72.11 | 56313867 | 0 |
| 3.91.72.12 | 56313868 | 0 |
| 3.91.72.13 | 56313869 | 0 |
| 3.91.72.14 | 56313870 | 0 |
| 3.91.72.15 | 56313871 | 0 |
| 3.91.72.16 | 56313872 | 0 |
| 3.91.72.17 | 56313873 | 0 |
| 3.91.72.18 | 56313874 | 0 |
| 3.91.72.19 | 56313875 | 0 |
| 3.91.72.20 | 56313876 | 0 |
| 3.91.72.21 | 56313877 | 0 |
| 3.91.72.22 | 56313878 | 0 |
| 3.91.72.23 | 56313879 | 0 |
| 3.91.72.24 | 56313880 | 0 |
| 3.91.72.25 | 56313881 | 0 |
| 3.91.72.26 | 56313882 | 0 |
| 3.91.72.27 | 56313883 | 0 |
| 3.91.72.28 | 56313884 | 0 |
| 3.91.72.29 | 56313885 | 0 |
| 3.91.72.30 | 56313886 | 0 |
| 3.91.72.31 | 56313887 | 0 |
| 3.91.72.32 | 56313888 | 0 |
| 3.91.72.33 | 56313889 | 0 |
| 3.91.72.34 | 56313890 | 0 |
| 3.91.72.35 | 56313891 | 0 |
| 3.91.72.36 | 56313892 | 0 |
| 3.91.72.37 | 56313893 | 0 |
| 3.91.72.38 | 56313894 | 0 |
| 3.91.72.39 | 56313895 | 0 |
| 3.91.72.40 | 56313896 | 0 |
| 3.91.72.41 | 56313897 | 0 |
| 3.91.72.42 | 56313898 | 0 |
| 3.91.72.43 | 56313899 | 0 |
| 3.91.72.44 | 56313900 | 0 |
| 3.91.72.45 | 56313901 | 0 |
| 3.91.72.46 | 56313902 | 0 |
| 3.91.72.47 | 56313903 | 0 |
| 3.91.72.48 | 56313904 | 0 |
| 3.91.72.49 | 56313905 | 0 |
| 3.91.72.50 | 56313906 | 0 |
| 3.91.72.51 | 56313907 | 0 |
| 3.91.72.52 | 56313908 | 0 |
| 3.91.72.53 | 56313909 | 0 |
| 3.91.72.54 | 56313910 | 0 |
| 3.91.72.55 | 56313911 | 0 |
| 3.91.72.56 | 56313912 | 0 |
| 3.91.72.57 | 56313913 | 0 |
| 3.91.72.58 | 56313914 | 0 |
| 3.91.72.59 | 56313915 | 0 |
| 3.91.72.60 | 56313916 | 0 |
| 3.91.72.61 | 56313917 | 0 |
| 3.91.72.62 | 56313918 | 0 |
| 3.91.72.63 | 56313919 | 0 |
| 3.91.72.64 | 56313920 | 0 |
| 3.91.72.65 | 56313921 | 0 |
| 3.91.72.66 | 56313922 | 0 |
| 3.91.72.67 | 56313923 | 0 |
| 3.91.72.68 | 56313924 | 0 |
| 3.91.72.69 | 56313925 | 0 |
| 3.91.72.70 | 56313926 | 0 |
| 3.91.72.71 | 56313927 | 0 |
| 3.91.72.72 | 56313928 | 0 |
| 3.91.72.73 | 56313929 | 0 |
| 3.91.72.74 | 56313930 | 0 |
| 3.91.72.75 | 56313931 | 0 |
| 3.91.72.76 | 56313932 | 0 |
| 3.91.72.77 | 56313933 | 0 |
| 3.91.72.78 | 56313934 | 0 |
| 3.91.72.79 | 56313935 | 0 |
| 3.91.72.80 | 56313936 | 0 |
| 3.91.72.81 | 56313937 | 0 |
| 3.91.72.82 | 56313938 | 0 |
| 3.91.72.83 | 56313939 | 0 |
| 3.91.72.84 | 56313940 | 0 |
| 3.91.72.85 | 56313941 | 0 |