La dirección IP 128.91.81 es proporcionada por University of Pennsylvania, que es propiedad de la CIDR (Classless Inter-Domain Routing) 128.91.0.0/16, IP entre 128.91.0.0 a 128.91.255.255 ). El número de sistema autónomo (ASN) es 55.
| ASN | 55 |
| IP que comienzan con | 128.91.0.0 |
| IP que termina con | 128.91.255.255 |
| ASN Nombre | University of Pennsylvania |
| CDIR | 128.91.0.0/16 |
| IP numérica | |
| Registe | arin |
| Última actualización | 12/12/2018 |

| Código País | País | Región | Ciudad | Latitud | Longitud | Última actualización | |
| IP2Location | US | Estados Unidos | - | San Jose | 37,3856 | -121,8853 | 2018-12-12 |
| MaxMind | US | Estados Unidos | - | San Jose | 37,3874 | -121,9024 | 2018-12-12 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.91.81.0 | 2153468160 | 0 |
| 128.91.81.1 | 2153468161 | 0 |
| 128.91.81.2 | 2153468162 | 0 |
| 128.91.81.3 | 2153468163 | 0 |
| 128.91.81.4 | 2153468164 | 0 |
| 128.91.81.5 | 2153468165 | 0 |
| 128.91.81.6 | 2153468166 | 0 |
| 128.91.81.7 | 2153468167 | 0 |
| 128.91.81.8 | 2153468168 | 0 |
| 128.91.81.9 | 2153468169 | 0 |
| 128.91.81.10 | 2153468170 | 0 |
| 128.91.81.11 | 2153468171 | 0 |
| 128.91.81.12 | 2153468172 | 0 |
| 128.91.81.13 | 2153468173 | 0 |
| 128.91.81.14 | 2153468174 | 0 |
| 128.91.81.15 | 2153468175 | 0 |
| 128.91.81.16 | 2153468176 | 0 |
| 128.91.81.17 | 2153468177 | 0 |
| 128.91.81.18 | 2153468178 | 0 |
| 128.91.81.19 | 2153468179 | 0 |
| 128.91.81.20 | 2153468180 | 0 |
| 128.91.81.21 | 2153468181 | 0 |
| 128.91.81.22 | 2153468182 | 0 |
| 128.91.81.23 | 2153468183 | 0 |
| 128.91.81.24 | 2153468184 | 0 |
| 128.91.81.25 | 2153468185 | 0 |
| 128.91.81.26 | 2153468186 | 0 |
| 128.91.81.27 | 2153468187 | 0 |
| 128.91.81.28 | 2153468188 | 0 |
| 128.91.81.29 | 2153468189 | 0 |
| 128.91.81.30 | 2153468190 | 0 |
| 128.91.81.31 | 2153468191 | 0 |
| 128.91.81.32 | 2153468192 | 0 |
| 128.91.81.33 | 2153468193 | 0 |
| 128.91.81.34 | 2153468194 | 0 |
| 128.91.81.35 | 2153468195 | 0 |
| 128.91.81.36 | 2153468196 | 0 |
| 128.91.81.37 | 2153468197 | 0 |
| 128.91.81.38 | 2153468198 | 0 |
| 128.91.81.39 | 2153468199 | 0 |
| 128.91.81.40 | 2153468200 | 0 |
| 128.91.81.41 | 2153468201 | 0 |
| 128.91.81.42 | 2153468202 | 0 |
| 128.91.81.43 | 2153468203 | 0 |
| 128.91.81.44 | 2153468204 | 0 |
| 128.91.81.45 | 2153468205 | 0 |
| 128.91.81.46 | 2153468206 | 0 |
| 128.91.81.47 | 2153468207 | 0 |
| 128.91.81.48 | 2153468208 | 0 |
| 128.91.81.49 | 2153468209 | 0 |
| 128.91.81.50 | 2153468210 | 0 |
| 128.91.81.51 | 2153468211 | 0 |
| 128.91.81.52 | 2153468212 | 0 |
| 128.91.81.53 | 2153468213 | 0 |
| 128.91.81.54 | 2153468214 | 0 |
| 128.91.81.55 | 2153468215 | 0 |
| 128.91.81.56 | 2153468216 | 0 |
| 128.91.81.57 | 2153468217 | 0 |
| 128.91.81.58 | 2153468218 | 0 |
| 128.91.81.59 | 2153468219 | 0 |
| 128.91.81.60 | 2153468220 | 0 |
| 128.91.81.61 | 2153468221 | 0 |
| 128.91.81.62 | 2153468222 | 0 |
| 128.91.81.63 | 2153468223 | 0 |
| 128.91.81.64 | 2153468224 | 0 |
| 128.91.81.65 | 2153468225 | 0 |
| 128.91.81.66 | 2153468226 | 0 |
| 128.91.81.67 | 2153468227 | 0 |
| 128.91.81.68 | 2153468228 | 0 |
| 128.91.81.69 | 2153468229 | 0 |
| 128.91.81.70 | 2153468230 | 0 |
| 128.91.81.71 | 2153468231 | 0 |
| 128.91.81.72 | 2153468232 | 0 |
| 128.91.81.73 | 2153468233 | 0 |
| 128.91.81.74 | 2153468234 | 0 |
| 128.91.81.75 | 2153468235 | 0 |
| 128.91.81.76 | 2153468236 | 0 |
| 128.91.81.77 | 2153468237 | 0 |
| 128.91.81.78 | 2153468238 | 0 |
| 128.91.81.79 | 2153468239 | 0 |
| 128.91.81.80 | 2153468240 | 0 |
| 128.91.81.81 | 2153468241 | 0 |
| 128.91.81.82 | 2153468242 | 0 |
| 128.91.81.83 | 2153468243 | 0 |
| 128.91.81.84 | 2153468244 | 0 |
| 128.91.81.85 | 2153468245 | 0 |