Wiki disagrees, so does D-Link's own website.
http://www.bloomberg.com/research/stocks/private/snapshot.as...
Feel free to search for it on the California Secretary of State's website: https://businesssearch.sos.ca.gov/
If they have legal incorporation in the United States, it is fair game for the FTC to go after their US-based company for failure to protect US consumers. Don't want legal liability in the US for your business activity, don't incorporate in the US.
Back to my point, singling out DLink when every other vendor has similar practices smells fishy.