Pode haver problemas persistentes com registros NS armazenados em cache usados pelas ferramentas da Web, pois o TTL nos registros NS
atendidos pelo TLD .UK é de 172800 segundos (48 horas). Abaixo estão alguns diagnósticos contra o que os servidores de nomes oficiais estão atualmente respondendo.
Veja o que o TLD do Reino Unido tem a dizer:
$ dig @ns1.nic.uk +norecurse lhlc.org.uk. NS
; <<>> DiG 9.7.3 <<>> @ns1.nic.uk +norecurse lhlc.org.uk. NS
; (2 servers found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 2363
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 0
;; QUESTION SECTION:
;lhlc.org.uk. IN NS
;; AUTHORITY SECTION:
lhlc.org.uk. 172800 IN NS ns8.whealmedia.com.
lhlc.org.uk. 172800 IN NS ns5.whealmedia.com.
lhlc.org.uk. 172800 IN NS ns6.whealmedia.com.
lhlc.org.uk. 172800 IN NS ns9.whealmedia.com.
lhlc.org.uk. 172800 IN NS ns7.whealmedia.com.
;; Query time: 110 msec
;; SERVER: 195.66.240.130#53(195.66.240.130)
;; WHEN: Sat Jul 20 13:53:07 2013
;; MSG SIZE rcvd: 133
Quais registros NS são fornecidos pelos servidores de nomes?
$ for server in ns{1..9}.whealmedia.com; do dig @$server +norecurse +short lhlc.org.uk. NS; done | sort | uniq -c
9 ns5.whealmedia.com.
9 ns6.whealmedia.com.
9 ns7.whealmedia.com.
9 ns8.whealmedia.com.
9 ns9.whealmedia.com.
Quais são os registros SOA atuais para esses servidores?
$ dig +nssearch lhlc.org.uk
SOA whealmedia.com. infrastructure.whealmedia.com. 2008010105 43200 3600 1209600 180 from server ns6.whealmedia.com in 58 ms.
SOA whealmedia.com. infrastructure.whealmedia.com. 2008010105 43200 3600 1209600 180 from server ns7.whealmedia.com in 85 ms.
SOA whealmedia.com. infrastructure.whealmedia.com. 2008010105 43200 3600 1209600 180 from server ns8.whealmedia.com in 57 ms.
SOA whealmedia.com. infrastructure.whealmedia.com. 2008010105 43200 3600 1209600 180 from server ns9.whealmedia.com in 41 ms.
SOA whealmedia.com. infrastructure.whealmedia.com. 2008010105 43200 3600 1209600 180 from server ns5.whealmedia.com in 39 ms.