This number is a "quasi" (one way) number used by the Department of State. It is a legitimate number which comes up when someone at an overseas US embassy calls the States.
I've got a call from 301-985-2070 , she spoke by Vietnamese( because I'm Vietnamese) , she said she just been in US 2 days and she was my ex-husband's friend . She said my ex-hus wanna send me a box , and asked my address . I belived in her and gave her my address . I really was considered and upset when I hung off phone . Did I make trouble for myself ? What can I do now? Please help me !