There still seems to be an
A record and that domain name can be pinged. It could be that holder of the domain failed to renew the hosting service in a a timely fashion. I've seen that happen before. Or the server's down. Those things happen too.
Or it could just be kaput.
Code:
$ dig linux-usb.org
; <<>> DiG 9.9.5-9+deb8u6-Debian <<>> linux-usb.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44730
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;linux-usb.org. IN A
;; Query time: 5 msec
;; SERVER: 192.168.2.1#53(192.168.2.1)
;; WHEN: Fri Jun 10 21:45:51 EDT 2016
;; MSG SIZE rcvd: 31
Wait a day and try again.