MoinQ: Diff for "DDoS/ftc.go.kr"

接続元により動作を変えているらしい。

家からだと通常の問い合わせも一度は timed out になっている。

conoha VPS からだと、一度 timed out のあと、返事をする。

• 13399 ftc.go.kr. May 27 00:00:01 - May 27 12:55:30

1. whois

Domain Name                 : ftc.go.kr
Registrant                  : Fair Trade Commission
Registrant Zip Code         : 30timed out108
Administrative Contact(AC)  : Fair Trade Commission
AC E-Mail                   : basici@korea.kr
AC Phone Number             : 044-200-4279
Registered Date             : 1996. 12. 30.
Last Updated Date           : 2020. 12. 17.
Expiration Date             : 2025. 10. 15.
Publishes                   : Y
Authorized Agency           : Inames Co., Ltd.(http://www.inames.co.kr)
DNSSEC                      : unsigned

Primary Name Server
   Host Name                : ns.gcc.go.kr
   IP Address               : 152.99.1.10

Secondary Name Server
   Host Name                : ns2.gcc.go.kr
   IP Address               : 152.99.200.6

2. history

$ dig -t ns ftc.go.kr @152.99.1.10
;; communications error to 152.99.1.10#53: timed out
;; communications error to 152.99.1.10#53: timed out

; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t ns ftc.go.kr @152.99.1.10
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6299
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 3

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 2048
; COOKIE: 337292def3c3c125010000006469635d42486518e9d977dc (good)
;; QUESTION SECTION:
;ftc.go.kr.                     IN      NS

;; ANSWER SECTION:
ftc.go.kr.              600     IN      NS      ns.gcc.go.kr.
ftc.go.kr.              600     IN      NS      ns2.gcc.go.kr.

;; ADDITIONAL SECTION:
ns.gcc.go.kr.           1988    IN      A       152.99.1.10
ns2.gcc.go.kr.          1988    IN      A       152.99.200.6

;; Query time: 36 msec
;; SERVER: 152.99.1.10#53(152.99.1.10) (UDP)
;; WHEN: Sun May 21 09:18:37 JST 2023
;; MSG SIZE  rcvd: 142

$ dig -t ns ftc.go.kr @152.99.200.6
;; communications error to 152.99.200.6#53: timed out

; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t ns ftc.go.kr @152.99.200.6
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17474
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 3

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 2048
; COOKIE: 012c83107099818b0100000064696385cf33c6a9c48d3134 (good)
;; QUESTION SECTION:
;ftc.go.kr.                     IN      NS

;; ANSWER SECTION:
ftc.go.kr.              600     IN      NS      ns2.gcc.go.kr.
ftc.go.kr.              600     IN      NS      ns.gcc.go.kr.

;; ADDITIONAL SECTION:
ns.gcc.go.kr.           1948    IN      A       152.99.1.10
ns2.gcc.go.kr.          1948    IN      A       152.99.200.6

;; Query time: 40 msec
;; SERVER: 152.99.200.6#53(152.99.200.6) (UDP)
;; WHEN: Sun May 21 09:19:17 JST 2023
;; MSG SIZE  rcvd: 142

$ dig -t a 00001111.ftc.go.kr @152.99.200.6
;; communications error to 152.99.200.6#53: timed out
;; communications error to 152.99.200.6#53: timed out
;; communications error to 152.99.200.6#53: timed out

; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t a 00001111.ftc.go.kr @152.99.200.6
;; global options: +cmd
;; no servers could be reached

152.99.1.10
$ dig -t a 00001111.ftc.go.kr @152.99.1.10
;; communications error to 152.99.1.10#53: timed out
;; communications error to 152.99.1.10#53: timed out
;; communications error to 152.99.1.10#53: timed out

; <<>> DiG 9.18.12-0ubuntu0.22.04.1-Ubuntu <<>> -t a 00001111.ftc.go.kr @152.99.1.10
;; global options: +cmd
;; no servers could be reached

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