1. DNS/プロバイダ/alpha-plt.jp

余計なA レコード以外は正常

%dnsq ns 340.co.jp a.dns.jp

2 340.co.jp:
154 bytes, 1+0+3+3 records, response, noerror
query: 2 340.co.jp
authority: 340.co.jp 86400 NS gntdns02.alpha-plt.jp
authority: 340.co.jp 86400 NS gntdns01.alpha-plt.jp
authority: 340.co.jp 86400 NS gntdns03.alpha-plt.jp
additional: gntdns01.alpha-plt.jp 86400 A 157.205.238.67
additional: gntdns02.alpha-plt.jp 86400 A 157.205.136.242
additional: gntdns03.alpha-plt.jp 86400 A 157.205.206.50

%dnsq ns 340.co.jp 157.205.238.67

2 340.co.jp:
154 bytes, 1+3+0+3 records, response, authoritative, noerror
query: 2 340.co.jp
answer: 340.co.jp 18000 NS gntdns03.alpha-plt.jp
answer: 340.co.jp 18000 NS gntdns01.alpha-plt.jp
answer: 340.co.jp 18000 NS gntdns02.alpha-plt.jp
additional: gntdns01.alpha-plt.jp 18000 A 157.205.238.67
additional: gntdns02.alpha-plt.jp 18000 A 157.205.136.242
additional: gntdns03.alpha-plt.jp 18000 A 157.205.206.50

%dnsq ns 340.co.jp 157.205.136.242

2 340.co.jp:
154 bytes, 1+3+0+3 records, response, authoritative, noerror
query: 2 340.co.jp
answer: 340.co.jp 18000 NS gntdns01.alpha-plt.jp
answer: 340.co.jp 18000 NS gntdns03.alpha-plt.jp
answer: 340.co.jp 18000 NS gntdns02.alpha-plt.jp
additional: gntdns01.alpha-plt.jp 18000 A 157.205.238.67
additional: gntdns02.alpha-plt.jp 18000 A 157.205.136.242
additional: gntdns03.alpha-plt.jp 18000 A 157.205.206.50