Their registrar is Network Solutions. The last update to "craigslist.org" there was at 2014-11-24T03:26:40Z, so something did happen to the records at Network Solutions recently.
Never even search for your domain availability there, they used to temporarily squat it "for your convenience" and hold it for two weeks. We once got hit by that pretty bad.
Network Solutions has had a business trajectory like Myspace. Verisign bought Network Solutions in 2000 for $21 billion. Then it was sold to Pivotal Private Equity. Then it was sold to General Atlantic. Then in 2011 it was sold to Web.com, a marketing company in Jacksonville, FL for about $850 million.