When this would happen ?
Mark_Andrews at isc.org
Mark_Andrews at isc.org
Tue Dec 10 05:04:15 UTC 2002
>
> Dear Sir :
>
> The following data is what confuses me!!
>
> ; <<>> DiG 8.3 <<>> @dns.hinet.net www.istudy.com.tw.
> ; (1 server found)
> ;; res options: init recurs defnam dnsrch
> ;; got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2
> ^^^^^^^^
> ;; QUERY SECTION:
> ;; www.istudy.com.tw, type = A, class = IN
>
> ;; ANSWER SECTION:
> www.istudy.com.tw. 1D IN A 61.222.96.52
> ^^^^
>
> ;; AUTHORITY SECTION:
> istudy.com.tw. 1D IN NS www.istudy.com.tw.
> istudy.com.tw. 1D IN NS istudy.com.tw.
>
> ;; ADDITIONAL SECTION:
> www.istudy.com.tw. 1D IN A 61.222.96.52
> istudy.com.tw. 1D IN A 61.222.96.52
>
>
> why does A record of www.istudy.com.tw always have 1D TTL ?
> why doesn't it countdown sec by sec ?
> ps: The name server I queried is not authoritive for this domain
>
> Best Regard,
> Scottie
>
> 2002/12/10
dns.hinet.net is a stealth server for com.tw.
Mark
; <<>> DiG 8.3 <<>> soa +norec com.tw @dns.hinet.net
; (1 server found)
;; res options: init defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41971
;; flags: qr aa ra; QUERY: 1, ANSWER: 1, AUTHORITY: 5, ADDITIONAL: 6
;; QUERY SECTION:
;; com.tw, type = SOA, class = IN
;; ANSWER SECTION:
com.tw. 1D IN SOA a.twnic.net.tw. snw.twnic.net.tw. (
1999081444 ; serial
1H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum
;; AUTHORITY SECTION:
com.tw. 6D IN NS a.twnic.net.tw.
com.tw. 6D IN NS b.twnic.net.tw.
com.tw. 6D IN NS c.twnic.net.tw.
com.tw. 6D IN NS d.twnic.net.tw.
com.tw. 6D IN NS ns2.cuhk.edu.hk.
;; ADDITIONAL SECTION:
a.twnic.net.tw. 20h55m IN A 140.111.1.2
a.twnic.net.tw. 20h55m IN A 163.28.1.2
b.twnic.net.tw. 20h55m IN A 192.72.81.200
c.twnic.net.tw. 20h55m IN A 168.95.192.10
d.twnic.net.tw. 20h55m IN A 210.17.9.229
ns2.cuhk.edu.hk. 1d5h17m7s IN A 137.189.6.21
;; Total query time: 912 msec
;; FROM: drugs.dv.isc.org to SERVER: dns.hinet.net 168.95.1.1
;; WHEN: Tue Dec 10 16:01:23 2002
;; MSG SIZE sent: 24 rcvd: 263
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark.Andrews at isc.org
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