為什麼nslookup查詢facebook.com時
facebook.com的dns server可以查不到東西
反而在hinet DNS可以查到record?
以下是我查詢的方法

C:\>nslookup
預設伺服器: 61-218-68-233.HINET-IP.hinet.net
Address: 61.218.68.233

set type=ns
facebook.com
伺服器: 61-218-68-233.HINET-IP.hinet.net
Address: 61.218.68.233

未經授權的回答:
facebook.com nameserver = dns05.sf2p.tfbnw.net
facebook.com nameserver = ns1.facebook.com
facebook.com nameserver = ns2.facebook.com
facebook.com nameserver = dns04.sf2p.tfbnw.net

ns1.facebook.com internet address = 204.74.66.132
dns04.sf2p.tfbnw.net internet address = 69.63.176.8

server 204.74.66.132
預設伺服器: [204.74.66.132]
Address: 204.74.66.132

set type=a
apps.facebook.com
伺服器: [204.74.66.132]
Address: 204.74.66.132

*** [204.74.66.132] 找不到 apps.facebook.com: BAD ERROR VALUE

server 69.63.176.8
預設伺服器: [69.63.176.8]
Address: 69.63.176.8

set type=a
apps.facebook.com
伺服器: [69.63.176.8]
Address: 69.63.176.8

*** [69.63.176.8] 找不到 apps.facebook.com: BAD ERROR VALUE

apps.facebook.com
伺服器: [69.63.176.8]
Address: 69.63.176.8

*** [69.63.176.8] 找不到 apps.facebook.com: BAD ERROR VALUE

server 168.95.1.1
預設伺服器: [168.95.1.1]
Address: 168.95.1.1

set type=a
apps.facebook.com
伺服器: [168.95.1.1]
Address: 168.95.1.1

未經授權的回答:
名稱: www-college.facebook.com
Address: 69.63.187.17
Aliases: apps.facebook.com