[[🗃️dig(コマンド)]]のレスポンスの見方を整理。
## 回答にANSWER SECTIONが含まれる場合
```
; <<>> DiG 9.10.6 <<>> roll-with-it.yudy.tokyo
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13427
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
;; QUESTION SECTION:
;roll-with-it.yudy.tokyo. IN A
;; ANSWER SECTION:
roll-with-it.yudy.tokyo. 300 IN A 104.21.56.193
roll-with-it.yudy.tokyo. 300 IN A 172.67.155.208
;; Query time: 20 msec
;; SERVER: 240b:10:8961:c00:8222:a7ff:fe45:68e8#53(240b:10:8961:c00:8222:a7ff:fe45:68e8)
;; WHEN: Sun Jul 16 14:58:21 JST 2023
;; MSG SIZE rcvd: 84
```
- QUESTION SECTION
- 問い合わせた内容
- ANSWER SECTION
- 問い合わせ結果。
- 上の内容だと、Aレコードの値になっているIPアドレスがわかる。
## 回答にAUTHORITY SECTIONが含まれる例
```
dig roll-with-it.yudy.tokyo
; <<>> DiG 9.10.6 <<>> roll-with-it.yudy.tokyo
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 47024
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1220
;; QUESTION SECTION:
;roll-with-it.yudy.tokyo. IN A
;; AUTHORITY SECTION:
yudy.tokyo. 181 IN SOA 01.dnsv.jp. hostmaster.dnsv.jp. 1689469959 3600 900 604800 300
;; Query time: 17 msec
;; SERVER: 240b:10:8961:c00:8222:a7ff:fe45:68e8#53(240b:10:8961:c00:8222:a7ff:fe45:68e8)
;; WHEN: Sun Jul 16 15:01:28 JST 2023
;; MSG SIZE rcvd: 109
```
- AUTHORITY SECTION
- 権威サーバーの情報
- 上の例だと、01.dnsv.jpが権威サーバーだとわかる