Die IP-Adresse 128.91.99 erfolgt über University of Pennsylvania, es hat gehören zu den GGDV (Classless Inter-Domain Routing) 128.91.0.0/16 (Bereich 128.91.0.0, 128.91.255.255). Die autonomen Systemnummer (ASN) ist 55.
| ASN | 55 |
| Ausgehend von IP | 128.91.0.0 |
| Beendigung durch IP | 128.91.255.255 |
| ASN-Namen | University of Pennsylvania |
| GGDV | 128.91.0.0/16 |
| Numerische IP | |
| Registrierung | arin |
| Letztes update | 29.04.2019 |

| Vorwahl des Landes | Land | Region | Stadt | Breitengrad | Länge | Letztes update | |
| IP2Location | US | USA | - | San Jose | 37,3856 | -121,8853 | 2019-04-28 |
| MaxMind | US | USA | - | San Jose | 37,3874 | -121,9024 | 2019-04-28 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |
| IP | Numerical IP | DNS |
| 128.91.99.0 | 2153472768 | 0 |
| 128.91.99.1 | 2153472769 | 0 |
| 128.91.99.2 | 2153472770 | 0 |
| 128.91.99.3 | 2153472771 | 0 |
| 128.91.99.4 | 2153472772 | 0 |
| 128.91.99.5 | 2153472773 | 0 |
| 128.91.99.6 | 2153472774 | 0 |
| 128.91.99.7 | 2153472775 | 0 |
| 128.91.99.8 | 2153472776 | 0 |
| 128.91.99.9 | 2153472777 | 0 |
| 128.91.99.10 | 2153472778 | 0 |
| 128.91.99.11 | 2153472779 | 0 |
| 128.91.99.12 | 2153472780 | 0 |
| 128.91.99.13 | 2153472781 | 0 |
| 128.91.99.14 | 2153472782 | 0 |
| 128.91.99.15 | 2153472783 | 0 |
| 128.91.99.16 | 2153472784 | 0 |
| 128.91.99.17 | 2153472785 | 0 |
| 128.91.99.18 | 2153472786 | 0 |
| 128.91.99.19 | 2153472787 | 0 |
| 128.91.99.20 | 2153472788 | 0 |
| 128.91.99.21 | 2153472789 | 0 |
| 128.91.99.22 | 2153472790 | 0 |
| 128.91.99.23 | 2153472791 | 0 |
| 128.91.99.24 | 2153472792 | 0 |
| 128.91.99.25 | 2153472793 | 0 |
| 128.91.99.26 | 2153472794 | 0 |
| 128.91.99.27 | 2153472795 | 0 |
| 128.91.99.28 | 2153472796 | 0 |
| 128.91.99.29 | 2153472797 | 0 |
| 128.91.99.30 | 2153472798 | 0 |
| 128.91.99.31 | 2153472799 | 0 |
| 128.91.99.32 | 2153472800 | 0 |
| 128.91.99.33 | 2153472801 | 0 |
| 128.91.99.34 | 2153472802 | 0 |
| 128.91.99.35 | 2153472803 | 0 |
| 128.91.99.36 | 2153472804 | 0 |
| 128.91.99.37 | 2153472805 | 0 |
| 128.91.99.38 | 2153472806 | 0 |
| 128.91.99.39 | 2153472807 | 0 |
| 128.91.99.40 | 2153472808 | 0 |
| 128.91.99.41 | 2153472809 | 0 |
| 128.91.99.42 | 2153472810 | 0 |
| 128.91.99.43 | 2153472811 | 0 |
| 128.91.99.44 | 2153472812 | 0 |
| 128.91.99.45 | 2153472813 | 0 |
| 128.91.99.46 | 2153472814 | 0 |
| 128.91.99.47 | 2153472815 | 0 |
| 128.91.99.48 | 2153472816 | 0 |
| 128.91.99.49 | 2153472817 | 0 |
| 128.91.99.50 | 2153472818 | 0 |
| 128.91.99.51 | 2153472819 | 0 |
| 128.91.99.52 | 2153472820 | 0 |
| 128.91.99.53 | 2153472821 | 0 |
| 128.91.99.54 | 2153472822 | 0 |
| 128.91.99.55 | 2153472823 | 0 |
| 128.91.99.56 | 2153472824 | 0 |
| 128.91.99.57 | 2153472825 | 0 |
| 128.91.99.58 | 2153472826 | 0 |
| 128.91.99.59 | 2153472827 | 0 |
| 128.91.99.60 | 2153472828 | 0 |
| 128.91.99.61 | 2153472829 | 0 |
| 128.91.99.62 | 2153472830 | 0 |
| 128.91.99.63 | 2153472831 | 0 |
| 128.91.99.64 | 2153472832 | 0 |
| 128.91.99.65 | 2153472833 | 0 |
| 128.91.99.66 | 2153472834 | 0 |
| 128.91.99.67 | 2153472835 | 0 |
| 128.91.99.68 | 2153472836 | 0 |
| 128.91.99.69 | 2153472837 | 0 |
| 128.91.99.70 | 2153472838 | 0 |
| 128.91.99.71 | 2153472839 | 0 |
| 128.91.99.72 | 2153472840 | 0 |
| 128.91.99.73 | 2153472841 | 0 |
| 128.91.99.74 | 2153472842 | 0 |
| 128.91.99.75 | 2153472843 | 0 |
| 128.91.99.76 | 2153472844 | 0 |
| 128.91.99.77 | 2153472845 | 0 |
| 128.91.99.78 | 2153472846 | 0 |
| 128.91.99.79 | 2153472847 | 0 |
| 128.91.99.80 | 2153472848 | 0 |
| 128.91.99.81 | 2153472849 | 0 |
| 128.91.99.82 | 2153472850 | 0 |
| 128.91.99.83 | 2153472851 | 0 |
| 128.91.99.84 | 2153472852 | 0 |
| 128.91.99.85 | 2153472853 | 0 |