Les adresses IP débutant par 128.3.131 sont fournies par Lawrence Berkeley National Laboratory, elles appartiennent au CIDR (Classless Inter-Domain Routing) 128.3.0.0/16, le bloc IP comprant les adresses de 128.3.0.0 à 128.3.255.255). Le numéro de système autonome (ASN) est 16.
| ASN | 16 |
| IP commençant par | 128.3.0.0 |
| IP se terminant par | 128.3.255.255 |
| Nom ASN | Lawrence Berkeley National Laboratory |
| CDIR | 128.3.0.0/16 |
| IP numérique | |
| Registe | arin |
| Dernière mise à jour | 21/11/2018 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Greenwich | 39,3897 | -75,3389 | 2018-11-20 |
| MaxMind | US | États-Unis | - | San Rafael | 38,024 | -122,54 | 2018-11-20 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.3.131.0 | 2147713792 | 0 |
| 128.3.131.1 | 2147713793 | 0 |
| 128.3.131.2 | 2147713794 | 0 |
| 128.3.131.3 | 2147713795 | 0 |
| 128.3.131.4 | 2147713796 | 0 |
| 128.3.131.5 | 2147713797 | 0 |
| 128.3.131.6 | 2147713798 | 0 |
| 128.3.131.7 | 2147713799 | 0 |
| 128.3.131.8 | 2147713800 | 0 |
| 128.3.131.9 | 2147713801 | 0 |
| 128.3.131.10 | 2147713802 | 0 |
| 128.3.131.11 | 2147713803 | 0 |
| 128.3.131.12 | 2147713804 | 0 |
| 128.3.131.13 | 2147713805 | 0 |
| 128.3.131.14 | 2147713806 | 0 |
| 128.3.131.15 | 2147713807 | 0 |
| 128.3.131.16 | 2147713808 | 0 |
| 128.3.131.17 | 2147713809 | 0 |
| 128.3.131.18 | 2147713810 | 0 |
| 128.3.131.19 | 2147713811 | 0 |
| 128.3.131.20 | 2147713812 | 0 |
| 128.3.131.21 | 2147713813 | 0 |
| 128.3.131.22 | 2147713814 | 0 |
| 128.3.131.23 | 2147713815 | 0 |
| 128.3.131.24 | 2147713816 | 0 |
| 128.3.131.25 | 2147713817 | 0 |
| 128.3.131.26 | 2147713818 | 0 |
| 128.3.131.27 | 2147713819 | 0 |
| 128.3.131.28 | 2147713820 | 0 |
| 128.3.131.29 | 2147713821 | 0 |
| 128.3.131.30 | 2147713822 | 0 |
| 128.3.131.31 | 2147713823 | 0 |
| 128.3.131.32 | 2147713824 | 0 |
| 128.3.131.33 | 2147713825 | 0 |
| 128.3.131.34 | 2147713826 | 0 |
| 128.3.131.35 | 2147713827 | 0 |
| 128.3.131.36 | 2147713828 | 0 |
| 128.3.131.37 | 2147713829 | 0 |
| 128.3.131.38 | 2147713830 | 0 |
| 128.3.131.39 | 2147713831 | 0 |
| 128.3.131.40 | 2147713832 | 0 |
| 128.3.131.41 | 2147713833 | 0 |
| 128.3.131.42 | 2147713834 | 0 |
| 128.3.131.43 | 2147713835 | 0 |
| 128.3.131.44 | 2147713836 | 0 |
| 128.3.131.45 | 2147713837 | 0 |
| 128.3.131.46 | 2147713838 | 0 |
| 128.3.131.47 | 2147713839 | 0 |
| 128.3.131.48 | 2147713840 | 0 |
| 128.3.131.49 | 2147713841 | 0 |
| 128.3.131.50 | 2147713842 | 0 |
| 128.3.131.51 | 2147713843 | 0 |
| 128.3.131.52 | 2147713844 | 0 |
| 128.3.131.53 | 2147713845 | 0 |
| 128.3.131.54 | 2147713846 | 0 |
| 128.3.131.55 | 2147713847 | 0 |
| 128.3.131.56 | 2147713848 | 0 |
| 128.3.131.57 | 2147713849 | 0 |
| 128.3.131.58 | 2147713850 | 0 |
| 128.3.131.59 | 2147713851 | 0 |
| 128.3.131.60 | 2147713852 | 0 |
| 128.3.131.61 | 2147713853 | 0 |
| 128.3.131.62 | 2147713854 | 0 |
| 128.3.131.63 | 2147713855 | 0 |
| 128.3.131.64 | 2147713856 | 0 |
| 128.3.131.65 | 2147713857 | 0 |
| 128.3.131.66 | 2147713858 | 0 |
| 128.3.131.67 | 2147713859 | 0 |
| 128.3.131.68 | 2147713860 | 0 |
| 128.3.131.69 | 2147713861 | 0 |
| 128.3.131.70 | 2147713862 | 0 |
| 128.3.131.71 | 2147713863 | 0 |
| 128.3.131.72 | 2147713864 | 0 |
| 128.3.131.73 | 2147713865 | 0 |
| 128.3.131.74 | 2147713866 | 0 |
| 128.3.131.75 | 2147713867 | 0 |
| 128.3.131.76 | 2147713868 | 0 |
| 128.3.131.77 | 2147713869 | 0 |
| 128.3.131.78 | 2147713870 | 0 |
| 128.3.131.79 | 2147713871 | 0 |
| 128.3.131.80 | 2147713872 | 0 |
| 128.3.131.81 | 2147713873 | 0 |
| 128.3.131.82 | 2147713874 | 0 |
| 128.3.131.83 | 2147713875 | 0 |
| 128.3.131.84 | 2147713876 | 0 |
| 128.3.131.85 | 2147713877 | 0 |