1. watchWWW/andersen.co.jp

Contents

  1. watchWWW/andersen.co.jp
    1. delegation
    2. NoData 返答をする
    3. TTL 60

%dnsq a www.andersen.co.jp a.dns.jp 

1 www.andersen.co.jp:
83 bytes, 1+0+2+0 records, response, noerror
query: 1 www.andersen.co.jp
authority: andersen.co.jp 86400 NS dns-b.iij.ad.jp
authority: andersen.co.jp 86400 NS dns-c.iij.ad.jp

%dnsq a www.andersen.co.jp dns-b.iij.ad.jp 

1 www.andersen.co.jp:
104 bytes, 1+1+0+0 records, response, authoritative, noerror
query: 1 www.andersen.co.jp
answer: www.andersen.co.jp 300 CNAME andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com

1.1. delegation

%dnsq a andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com u1.amazonaws.com 

1 andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com:
208 bytes, 1+0+4+0 records, response, noerror
query: 1 andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com
authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-54.awsdns-06.com
authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1325.awsdns-37.org
authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-982.awsdns-58.net
authority: ap-northeast-1.elb.amazonaws.com 300 NS ns-1683.awsdns-18.co.uk

1.2. NoData 返答をする

elb は Non-terminal node

%dnsq ns elb.amazonaws.com u1.amazonaws.com 

2 elb.amazonaws.com:
107 bytes, 1+0+1+0 records, response, authoritative, noerror
query: 2 elb.amazonaws.com
authority: amazonaws.com 3593 SOA pdns1.ultradns.net hostmaster.amazon.com 2014061209 180 60 2592000 3593

1.3. TTL 60

%dnsq a andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com ns-54.awsdns-06.com 

1 andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com:
240 bytes, 1+2+4+0 records, response, authoritative, noerror
query: 1 andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com
answer: andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com 60 A 54.92.74.17
answer: andersen-lb-927237822.ap-northeast-1.elb.amazonaws.com 60 A 52.199.51.242
authority: ap-northeast-1.elb.amazonaws.com 1800 NS ns-1325.awsdns-37.org
authority: ap-northeast-1.elb.amazonaws.com 1800 NS ns-1683.awsdns-18.co.uk
authority: ap-northeast-1.elb.amazonaws.com 1800 NS ns-54.awsdns-06.com
authority: ap-northeast-1.elb.amazonaws.com 1800 NS ns-982.awsdns-58.net