Les adresses IP débutant par 3.99.72 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 | 02/08/2017 |

| Code pays | Pays | Région | Ville | Latitude | Longitude | Dernière mise à jour | |
| IP2Location | US | États-Unis | - | Fairfield | 41,2184 | -73,2517 | 2017-07-03 |
| MaxMind | US | États-Unis | - | Fairfield | 41,1412 | -73,2637 | 2017-07-03 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 3.99.72.0 | 56838144 | 0 |
| 3.99.72.1 | 56838145 | 0 |
| 3.99.72.2 | 56838146 | 0 |
| 3.99.72.3 | 56838147 | 0 |
| 3.99.72.4 | 56838148 | 0 |
| 3.99.72.5 | 56838149 | 0 |
| 3.99.72.6 | 56838150 | 0 |
| 3.99.72.7 | 56838151 | 0 |
| 3.99.72.8 | 56838152 | 0 |
| 3.99.72.9 | 56838153 | 0 |
| 3.99.72.10 | 56838154 | 0 |
| 3.99.72.11 | 56838155 | 0 |
| 3.99.72.12 | 56838156 | 0 |
| 3.99.72.13 | 56838157 | 0 |
| 3.99.72.14 | 56838158 | 0 |
| 3.99.72.15 | 56838159 | 0 |
| 3.99.72.16 | 56838160 | 0 |
| 3.99.72.17 | 56838161 | 0 |
| 3.99.72.18 | 56838162 | 0 |
| 3.99.72.19 | 56838163 | 0 |
| 3.99.72.20 | 56838164 | 0 |
| 3.99.72.21 | 56838165 | 0 |
| 3.99.72.22 | 56838166 | 0 |
| 3.99.72.23 | 56838167 | 0 |
| 3.99.72.24 | 56838168 | 0 |
| 3.99.72.25 | 56838169 | 0 |
| 3.99.72.26 | 56838170 | 0 |
| 3.99.72.27 | 56838171 | 0 |
| 3.99.72.28 | 56838172 | 0 |
| 3.99.72.29 | 56838173 | 0 |
| 3.99.72.30 | 56838174 | 0 |
| 3.99.72.31 | 56838175 | 0 |
| 3.99.72.32 | 56838176 | 0 |
| 3.99.72.33 | 56838177 | 0 |
| 3.99.72.34 | 56838178 | 0 |
| 3.99.72.35 | 56838179 | 0 |
| 3.99.72.36 | 56838180 | 0 |
| 3.99.72.37 | 56838181 | 0 |
| 3.99.72.38 | 56838182 | 0 |
| 3.99.72.39 | 56838183 | 0 |
| 3.99.72.40 | 56838184 | 0 |
| 3.99.72.41 | 56838185 | 0 |
| 3.99.72.42 | 56838186 | 0 |
| 3.99.72.43 | 56838187 | 0 |
| 3.99.72.44 | 56838188 | 0 |
| 3.99.72.45 | 56838189 | 0 |
| 3.99.72.46 | 56838190 | 0 |
| 3.99.72.47 | 56838191 | 0 |
| 3.99.72.48 | 56838192 | 0 |
| 3.99.72.49 | 56838193 | 0 |
| 3.99.72.50 | 56838194 | 0 |
| 3.99.72.51 | 56838195 | 0 |
| 3.99.72.52 | 56838196 | 0 |
| 3.99.72.53 | 56838197 | 0 |
| 3.99.72.54 | 56838198 | 0 |
| 3.99.72.55 | 56838199 | 0 |
| 3.99.72.56 | 56838200 | 0 |
| 3.99.72.57 | 56838201 | 0 |
| 3.99.72.58 | 56838202 | 0 |
| 3.99.72.59 | 56838203 | 0 |
| 3.99.72.60 | 56838204 | 0 |
| 3.99.72.61 | 56838205 | 0 |
| 3.99.72.62 | 56838206 | 0 |
| 3.99.72.63 | 56838207 | 0 |
| 3.99.72.64 | 56838208 | 0 |
| 3.99.72.65 | 56838209 | 0 |
| 3.99.72.66 | 56838210 | 0 |
| 3.99.72.67 | 56838211 | 0 |
| 3.99.72.68 | 56838212 | 0 |
| 3.99.72.69 | 56838213 | 0 |
| 3.99.72.70 | 56838214 | 0 |
| 3.99.72.71 | 56838215 | 0 |
| 3.99.72.72 | 56838216 | 0 |
| 3.99.72.73 | 56838217 | 0 |
| 3.99.72.74 | 56838218 | 0 |
| 3.99.72.75 | 56838219 | 0 |
| 3.99.72.76 | 56838220 | 0 |
| 3.99.72.77 | 56838221 | 0 |
| 3.99.72.78 | 56838222 | 0 |
| 3.99.72.79 | 56838223 | 0 |
| 3.99.72.80 | 56838224 | 0 |
| 3.99.72.81 | 56838225 | 0 |
| 3.99.72.82 | 56838226 | 0 |
| 3.99.72.83 | 56838227 | 0 |
| 3.99.72.84 | 56838228 | 0 |
| 3.99.72.85 | 56838229 | 0 |