The IP address 198.203.21 is provided by San Antonio Water System, it's belong to the CDIR (Classless Inter-Domain Routing) 198.203.21.0/24 (range 198.203.21.0 to 198.203.21.255). The autonomous system number (ASN) is 36844.
| ASN | 36844 |
| IP starting by | 198.203.21.0 |
| IP ending by | 198.203.21.255 |
| ASN Name | San Antonio Water System |
| CDIR | 198.203.21.0/24 |
| Numerical IP | |
| Registry | arin |
| Last update | 03/12/2018 |

| Country Code | Country | Region | City | Latitude | Longitude | Last update | |
| IP2Location | US | United States | - | Santa Rosa | 38.4405 | -122.7144 | 2018-12-03 |
| MaxMind | US | United States | - | San Antonio | 29.4244 | -98.4842 | 2018-12-03 |
| Whois | US | - | - | - | -96 | 37 | |
| W3C | - | - | - | - | - | - | - |