The IP address 128.91.200 is provided by University of Pennsylvania, it's belong to the CDIR (Classless Inter-Domain Routing) 128.91.0.0/16 (range 128.91.0.0 to 128.91.255.255). The autonomous system number (ASN) is 55.
| ASN | 55 |
| IP starting by | 128.91.0.0 |
| IP ending by | 128.91.255.255 |
| ASN Name | University of Pennsylvania |
| CDIR | 128.91.0.0/16 |
| Numerical IP | |
| Registry | arin |
| Last update | 09/12/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | San Jose | 37.3856 | -121.8853 | 2018-12-09 |
| MaxMind | US | United States | - | San Jose | 37.3874 | -121.9024 | 2018-12-09 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |