My DNS cache is broken for a few websites (most notably codeship.com) so I need to clear it.
As instructed on numerous websites I've run
dscacheutil -flushcache; sudo killall -HUP mDNSResponder
in various permutations, including rebooting, but it has no effect.
dig I get no
ANSWER SECTION, but I don't know how to interpret the rest of the info.
; <<>> DiG 9.8.3-P1 <<>> codeship.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 15470 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;codeship.com. IN A ;; Query time: 54 msec ;; SERVER: 192.168.1.1#53(192.168.1.1) ;; WHEN: Mon Dec 1 23:37:49 2014 ;; MSG SIZE rcvd: 30