1. watchA
CNAME返答の先は信用できない。RCODEも。
bluehost は myshopify の｢権威｣なのか。watchNS/myshopify.com
2. whois
Domain Name: DIWANSTORE.COM Registry Domain ID: 2247348821_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.fastdomain.com Registrar URL: http://www.fastdomain.com Updated Date: 2021-03-20T07:59:16Z Creation Date: 2018-04-03T14:58:29Z Registry Expiry Date: 2022-04-03T14:58:29Z Registrar: FastDomain Inc. Registrar IANA ID: 1154 Registrar Abuse Contact Email: Registrar Abuse Contact Phone: Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Name Server: NS1.BLUEHOST.COM Name Server: NS2.BLUEHOST.COM DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of whois database: 2021-09-23T20:19:43Z <<<
3. history
$ dig diwanstore.com @ns1.bluehost.com
; <<>> DiG 9.11.3-1ubuntu1.14-Ubuntu <<>> diwanstore.com @ns1.bluehost.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 28083
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; NSID: 33 38 32 6d 31 32 36 ("382m126")
;; QUESTION SECTION:
;diwanstore.com. IN A
;; ANSWER SECTION:
diwanstore.com. 14400 IN CNAME diwan-group.myshopify.com.
;; AUTHORITY SECTION:
myshopify.com. 300 IN SOA ns1.bluehost.com. dnsadmin.bluehost.com. 2020080401 86400 7200 3600000 300
;; Query time: 184 msec
;; SERVER: 162.159.24.80#53(162.159.24.80)
;; WHEN: Fri Sep 24 05:16:21 JST 2021
;; MSG SIZE rcvd: 148
4. myshopify
$ dig myshopify.com @ns1.bluehost.com
; <<>> DiG 9.11.3-1ubuntu1.14-Ubuntu <<>> myshopify.com @ns1.bluehost.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37685
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
; NSID: 33 38 32 6d 31 32 36 ("382m126")
;; QUESTION SECTION:
;myshopify.com. IN A
;; AUTHORITY SECTION:
myshopify.com. 300 IN SOA ns1.bluehost.com. dnsadmin.bluehost.com. 2020080401 86400 7200 3600000 300
;; Query time: 189 msec
;; SERVER: 162.159.24.80#53(162.159.24.80)
;; WHEN: Sat Sep 25 11:03:41 JST 2021
;; MSG SIZE rcvd: 111