According to North American Numbering Plan, 503721 located in PORTLAND, Oregon. the first three digits 503 locate to state Oregon, 721 locate the city PORTLAND, furthermore, we also provide some other information such as the zip code example(s) 97204, 97209, 97205, carrier QWEST CORPORATION, and the latitude and longitude is 45.5235 -122.6751. 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.