According to North American Numbering Plan, 331999 located in OSWEGO, Illinois. the first three digits 331 locate to state Illinois, 999 locate the city OSWEGO, furthermore, we also provide some other information such as the zip code example(s) 60543, carrier BANDWIDTH.COM CLEC, LLC - IL, and the latitude and longitude is 41.6822 -88.3546. Please pay attention that the detail we provide only as a reference, the details of the zip code may be not complete, the latitude and longitude likely to have deviation.

Here are some random corresponding phone numbers.