Try this sequence:
- First determine root name servers:
$ dig NS co.za ; <<>> DiG 9.18.33-1~deb12u2-Debian <<>> NS co.za ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34539 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ;; QUESTION SECTION: ;co.za. IN NS ;; ANSWER SECTION: co.za. 7200 IN NS coza1.dnsnode.net. co.za. 7200 IN NS ns2.dns.net.za. co.za. 7200 IN NS ns2us.dns.business. ;; Query time: 20 msec ;; SERVER: 102.135.240.1#53(102.135.240.1) (UDP) ;; WHEN: Thu Mar 13 13:52:29 SAST 2025 ;; MSG SIZE rcvd: 123
Root name servers are coza1.dnsnode.net
, ns2.dns.net.za
, and ns2us.dns.business
2. Find out more about any (or all) of the name servers:
$ dig ns2us.dns.business ; <<>> DiG 9.18.33-1~deb12u2-Debian <<>> ns2us.dns.business ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 54683 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1232 ;; QUESTION SECTION: ;ns2us.dns.business. IN A ;; ANSWER SECTION: ns2us.dns.business. 1338 IN A 147.135.106.236 ;; Query time: 176 msec ;; SERVER: 102.135.240.1#53(102.135.240.1) (UDP) ;; WHEN: Thu Mar 13 13:53:27 SAST 2025 ;; MSG SIZE rcvd: 63
3. Finally, see if you can see the start of authority (SoA) for your own domain:
$ dig @147.135.106.236 SOA vanderhost.co.za ;; communications error to 147.135.106.236#53: timed out $ ping vanderhost.co.za ping: vanderhost.co.za: Temporary failure in name resolution
You’ll also have these error sending email:
- host lookup did not complete
- Temporary Local Problem
What to do?
Contact dns.business tech support or wait till any cast is working again