The IP address 18.81.19 is provided by Massachusetts Institute of Technology, it's belong to the CDIR (Classless Inter-Domain Routing) 18.0.0.0/8 (range 18.0.0.0 to 18.255.255.255). The autonomous system number (ASN) is 3.
| ASN | 3 |
| IP starting by | 18.0.0.0 |
| IP ending by | 18.255.255.255 |
| ASN Name | Massachusetts Institute of Technology |
| CDIR | 18.0.0.0/8 |
| Numerical IP | |
| Registry | |
| Last update | 26/07/2017 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Cambridge | 42.3651 | -71.1045 | 2017-07-26 |
| MaxMind | US | United States | - | Cambridge | 42.3646 | -71.1028 | 2017-07-26 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 18.81.19.0 | 307303168 | 0 |
| 18.81.19.1 | 307303169 | 0 |
| 18.81.19.2 | 307303170 | 0 |
| 18.81.19.3 | 307303171 | 0 |
| 18.81.19.4 | 307303172 | 0 |
| 18.81.19.5 | 307303173 | 0 |
| 18.81.19.6 | 307303174 | 0 |
| 18.81.19.7 | 307303175 | 0 |
| 18.81.19.8 | 307303176 | 0 |
| 18.81.19.9 | 307303177 | 0 |
| 18.81.19.10 | 307303178 | 0 |
| 18.81.19.11 | 307303179 | 0 |
| 18.81.19.12 | 307303180 | 0 |
| 18.81.19.13 | 307303181 | 0 |
| 18.81.19.14 | 307303182 | 0 |
| 18.81.19.15 | 307303183 | 0 |
| 18.81.19.16 | 307303184 | 0 |
| 18.81.19.17 | 307303185 | 0 |
| 18.81.19.18 | 307303186 | 0 |
| 18.81.19.19 | 307303187 | 0 |
| 18.81.19.20 | 307303188 | 0 |
| 18.81.19.21 | 307303189 | 0 |
| 18.81.19.22 | 307303190 | 0 |
| 18.81.19.23 | 307303191 | 0 |
| 18.81.19.24 | 307303192 | 0 |
| 18.81.19.25 | 307303193 | 0 |
| 18.81.19.26 | 307303194 | 0 |
| 18.81.19.27 | 307303195 | 0 |
| 18.81.19.28 | 307303196 | 0 |
| 18.81.19.29 | 307303197 | 0 |
| 18.81.19.30 | 307303198 | 0 |
| 18.81.19.31 | 307303199 | 0 |
| 18.81.19.32 | 307303200 | 0 |
| 18.81.19.33 | 307303201 | 0 |
| 18.81.19.34 | 307303202 | 0 |
| 18.81.19.35 | 307303203 | 0 |
| 18.81.19.36 | 307303204 | 0 |
| 18.81.19.37 | 307303205 | 0 |
| 18.81.19.38 | 307303206 | 0 |
| 18.81.19.39 | 307303207 | 0 |
| 18.81.19.40 | 307303208 | 0 |
| 18.81.19.41 | 307303209 | 0 |
| 18.81.19.42 | 307303210 | 0 |
| 18.81.19.43 | 307303211 | 0 |
| 18.81.19.44 | 307303212 | 0 |
| 18.81.19.45 | 307303213 | 0 |
| 18.81.19.46 | 307303214 | 0 |
| 18.81.19.47 | 307303215 | 0 |
| 18.81.19.48 | 307303216 | 0 |
| 18.81.19.49 | 307303217 | 0 |
| 18.81.19.50 | 307303218 | 0 |
| 18.81.19.51 | 307303219 | 0 |
| 18.81.19.52 | 307303220 | 0 |
| 18.81.19.53 | 307303221 | 0 |
| 18.81.19.54 | 307303222 | 0 |
| 18.81.19.55 | 307303223 | 0 |
| 18.81.19.56 | 307303224 | 0 |
| 18.81.19.57 | 307303225 | 0 |
| 18.81.19.58 | 307303226 | 0 |
| 18.81.19.59 | 307303227 | 0 |
| 18.81.19.60 | 307303228 | 0 |
| 18.81.19.61 | 307303229 | 0 |
| 18.81.19.62 | 307303230 | 0 |
| 18.81.19.63 | 307303231 | 0 |
| 18.81.19.64 | 307303232 | 0 |
| 18.81.19.65 | 307303233 | 0 |
| 18.81.19.66 | 307303234 | 0 |
| 18.81.19.67 | 307303235 | 0 |
| 18.81.19.68 | 307303236 | 0 |
| 18.81.19.69 | 307303237 | 0 |
| 18.81.19.70 | 307303238 | 0 |
| 18.81.19.71 | 307303239 | 0 |
| 18.81.19.72 | 307303240 | 0 |
| 18.81.19.73 | 307303241 | 0 |
| 18.81.19.74 | 307303242 | 0 |
| 18.81.19.75 | 307303243 | 0 |
| 18.81.19.76 | 307303244 | 0 |
| 18.81.19.77 | 307303245 | 0 |
| 18.81.19.78 | 307303246 | 0 |
| 18.81.19.79 | 307303247 | 0 |
| 18.81.19.80 | 307303248 | 0 |
| 18.81.19.81 | 307303249 | 0 |
| 18.81.19.82 | 307303250 | 0 |
| 18.81.19.83 | 307303251 | 0 |
| 18.81.19.84 | 307303252 | 0 |
| 18.81.19.85 | 307303253 | 0 |