1. watchA/NXD/ui-dns/momfiles.com
zone apex CNAME もよくない。
RCODE NXDOMAINを返すのは、Authority Sectionにあるとおり、このNSが google.comの権威サーバーだから。 (本当か)
1.1. whois
Domain Name: MOMFILES.COM Registry Domain ID: 702108863_DOMAIN_COM-VRSN Registrar WHOIS Server: whois.ionos.com Registrar URL: http://www.ionos.com Updated Date: 2020-12-09T08:20:41Z Creation Date: 2006-12-08T17:34:51Z Registry Expiry Date: 2021-12-08T17:34:51Z Registrar: 1&1 IONOS SE Registrar IANA ID: 83 Registrar Abuse Contact Email: abuse@ionos.com Registrar Abuse Contact Phone: +1.6105601459 Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited Name Server: NS1118.UI-DNS.BIZ Name Server: NS1118.UI-DNS.COM Name Server: NS1118.UI-DNS.DE Name Server: NS1118.UI-DNS.ORG DNSSEC: unsigned URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/ >>> Last update of whois database: 2021-09-23T09:28:42Z <<<
1.2. 1218
NXDOMAINではなくなったが。
$ dig -t soa momfiles.com @ns1118.ui-dns.com. ; <<>> DiG 9.16.1-Ubuntu <<>> -t soa momfiles.com @ns1118.ui-dns.com. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16495 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1220 ;; QUESTION SECTION: ;momfiles.com. IN SOA ;; ANSWER SECTION: momfiles.com. 86400 IN SOA ns1118.ui-dns.org. hostmaster.1and1.com. 2017080402 28800 7200 604800 300 ;; Query time: 151 msec ;; SERVER: 217.160.82.118#53(217.160.82.118) ;; WHEN: 土 12月 18 20:20:40 JST 2021 ;; MSG SIZE rcvd: 111 $ dig -t ns momfiles.com @ns1118.ui-dns.com. ; <<>> DiG 9.16.1-Ubuntu <<>> -t ns momfiles.com @ns1118.ui-dns.com. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55251 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; WARNING: recursion requested but not available ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 1220 ;; QUESTION SECTION: ;momfiles.com. IN NS ;; ANSWER SECTION: momfiles.com. 3600 IN CNAME ghs.google.com. ;; Query time: 151 msec ;; SERVER: 217.160.82.118#53(217.160.82.118) ;; WHEN: 土 12月 18 20:22:13 JST 2021 ;; MSG SIZE rcvd: 66
1.3. history
$ dig momfiles.com @ns1118.ui-dns.com
; <<>> DiG 9.11.3-1ubuntu1.14-Ubuntu <<>> momfiles.com @ns1118.ui-dns.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40215
;; 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: 1220
; NSID: 64 6e 73 2d 70 75 62 2d 75 73 2d 6d 6b 63 2d 67 61 30 32 2e 73 65 72 76 65 72 2e 6c 61 6e ("dns-pub-us-mkc-ga02.server.lan")
;; QUESTION SECTION:
;momfiles.com. IN A
;; ANSWER SECTION:
momfiles.com. 3600 IN CNAME ghs.google.com.
;; AUTHORITY SECTION:
google.com. 600 IN SOA ns1045.ui-dns.com. hostmaster.1und1.com. 2017060106 28800 7200 604800 600
;; Query time: 157 msec
;; SERVER: 217.160.82.118#53(217.160.82.118)
;; WHEN: Thu Sep 23 18:29:34 JST 2021
;; MSG SIZE rcvd: 167
ghs.google.com. 363 IN A 142.250.199.115
1.4. google.com
$ dig -t ns google.com @ns1045.ui-dns.com
; <<>> DiG 9.11.3-1ubuntu1.14-Ubuntu <<>> -t ns google.com @ns1045.ui-dns.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25793
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
; NSID: 64 6e 73 2d 70 75 62 2d 75 73 2d 6d 6b 63 2d 67 61 30 32 2e 73 65 72 76 65 72 2e 6c 61 6e ("dns-pub-us-mkc-ga02.server.lan")
;; QUESTION SECTION:
;google.com. IN NS
;; ANSWER SECTION:
google.com. 86400 IN NS ns1045.ui-dns.com.
google.com. 86400 IN NS ns1045.ui-dns.org.
google.com. 86400 IN NS ns1045.ui-dns.biz.
google.com. 86400 IN NS ns1045.ui-dns.de.
;; Query time: 161 msec
;; SERVER: 217.160.82.45#53(217.160.82.45)
;; WHEN: Thu Sep 23 18:38:21 JST 2021
;; MSG SIZE rcvd: 193