>>1308835
i'm not certain yet.
i have isolated from the full data set, from 2000 to 2018, for DUNS 123456787, unique entries by:
(vendor name + vendor city + ZIP)
2000: 7 unique entries
2001: 14
2002: 189
2003: 416
2004: 1193
2005: 1970
2006: 623
2007: 26
2008: 19
2009: 21
2010: 9
2011: 12
2012: 10
2013: 9
2014: 9
2015: 8
2016: 10
2017: 14
2018: 3
for 2007-2018, there are 76 unique vendors. some duplicate vendor/zip combos.
but for instance,
if DUN = 123456787 and ZIP = 282062143, then the vendor is always "J & B TRUCK REPAIR SERVICE".
123456787 + 222023732 is always:
MISCELLANEOUS FOREIGN CONTRACTORS
MISCELLANEOUS FOREIGN AWARDEES
and those show up all over the world.
a problem is that the fpdn DB does NOT export Place of Performance, so it is difficult to place some work.