VoIP source. White Pages shows on a map that this number originates in the "Mid City Triangle" of New Orleans (bounded by I-610 and the I-10 loop). I have received a number of "duh" calls from numbers in this exact same area. Interestingly, when I report these numbers, I seem to have been the only person in the 504 area code area who is getting these weird calls, and reporting them to 800notes and similar sites.