Nslookup.exe 是用來測試和疑難排解 DNS 伺服器的命令列管理工具
在命令提示字元輸入 help 或 ? 將產生可用命令的清單。 在命令提示字元輸入的任何內容如果無法辨識為有效的命令，則會假設成是主機名稱，並會使用預設伺服器嘗試加以解析。如果要中斷互動式命令，請按 CTRL+C。如果要結束互動模式並返回命令提示，請在命令提示字元輸入 exit。
下列是說明輸出，並且包含完整的選項清單：
命令： (識別碼以大寫顯示，[] 表示是選擇性的)
NAME - 列印關於主機/網域 NAME 的資訊，使用預設
伺服器
NAME1 NAME2 - 同上，不同的是使用 NAME2 做為伺服器
help 或 ? - 列印一般命令的資訊
set OPTION - 設定選項
all - 列印選項、目前的伺服器和主機
[no]debug - 列印除錯資訊
[no]d2 - 列印詳細的除錯資訊
[no]defname - 將網域名稱附加到每個查詢
[no]recurse - 要求遞迴的查詢解答
[no]search - 使用網域搜尋清單
[no]vc - 始終使用虛擬電路
domain=NAME - 將預設網域名稱設為 NAME
srchlist=N1[/N2/.../N6] - 將網域設為 N1，將搜尋清單設為 N1、N2
等等
root=NAME - 將根伺服器設為 NAME
retry=X - 將重試次數設為 X
timeout=X - 將初始的逾時間隔設為 X 秒
type=X - 設定查詢類型 (例如，A、ANY、CNAME、MX、
NS、PTR、SOA、SRV)
querytype=X - 與類型相同
class=X - 設定查詢類別 (例如 IN (網際網路)、ANY)
[no]msxfr - 使用 MS 快速區域轉送
ixfrver=X - 目前使用於 IXFR 轉送要求的版本
server NAME - 將預設伺服器設為 NAME，使用目前預設的伺服器
lserver NAME - 將預設伺服器設為 NAME，使用初始的伺服器
finger [USER] - 在目前的預設主機追蹤選擇性的 NAME
root - 將目前的預設伺服器設為根伺服器
ls [opt] DOMAIN [> FILE] - 列出網域中的位址 (選擇性：輸出至
檔案)
-a - 列出正式名稱與別名
-d - 列出所有記錄
-t TYPE - 列出指定類型的記錄 (例如，A、CNAME、
MX、NS、PTR 等等)
view FILE - 排序 'ls' 輸出檔案並使用 pg 檢視
exit - 結束程式
檢查Domain Name System
Default Server: dns.hinet.net
Address: 168.95.1.1
> www.hp.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
Name: www.hpgtm.nsatc.net
Addresses: 15.217.120.22, 15.240.238.52
Aliases: www.hp.com
詳細資料
> www.hp.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
www.hp.com canonical name = www.hpgtm.nsatc.net
hp.com nameserver = ns2.hp.com
hp.com nameserver = ns3.hp.com
hp.com nameserver = ns5.hp.com
hp.com nameserver = ns1.hp.com
hp.com nameserver = ns6.hp.com
hp.com nameserver = ns4.hp.com
ns1.hp.com internet address = 15.219.145.12
ns2.hp.com internet address = 15.219.160.12
ns3.hp.com internet address = 15.203.209.12
ns4.hp.com internet address = 15.203.224.14
ns5.hp.com internet address = 15.195.192.37
ns6.hp.com internet address = 15.195.208.12
Mail Exchanger record MX紀錄
> www.hp.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
www.hp.com canonical name = www.hpgtm.nsatc.net
nsatc.net
primary name server = admin.nsatc.net
responsible mail addr = dl-cdn_infrastructure.level3.com
serial = 1286909431
refresh = 10800 (3 hours)
retry = 2700 (45 mins)
expire = 3600000 (41 days 16 hours)
default TTL = 900 (15 mins)
> hp.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
hp.com MX preference = 10, mail exchanger = smtp.hp.com
hp.com nameserver = ns1.hp.com
hp.com nameserver = ns3.hp.com
hp.com nameserver = ns2.hp.com
hp.com nameserver = ns5.hp.com
hp.com nameserver = ns4.hp.com
hp.com nameserver = ns6.hp.com
ns1.hp.com internet address = 15.219.145.12
ns2.hp.com internet address = 15.219.160.12
ns3.hp.com internet address = 15.203.209.12
ns4.hp.com internet address = 15.203.224.14
ns5.hp.com internet address = 15.195.192.37
ns6.hp.com internet address = 15.195.208.12
換另一個IP試
Default Server: hntp1.hinet.net
Address: 168.95.192.1
> www.hp.com
Server: hntp1.hinet.net
Address: 168.95.192.1
Non-authoritative answer:
www.hp.com canonical name = www.hpgtm.nsatc.net
nsatc.net
primary name server = admin.nsatc.net
responsible mail addr = dl-cdn_infrastructure.level3.com
serial = 1286909431
refresh = 10800 (3 hours)
retry = 2700 (45 mins)
expire = 3600000 (41 days 16 hours)
default TTL = 900 (15 mins)
> hp.com
Server: hntp1.hinet.net
Address: 168.95.192.1
Non-authoritative answer:
hp.com MX preference = 10, mail exchanger = smtp.hp.com
hp.com nameserver = ns1.hp.com
hp.com nameserver = ns6.hp.com
hp.com nameserver = ns3.hp.com
hp.com nameserver = ns2.hp.com
hp.com nameserver = ns5.hp.com
hp.com nameserver = ns4.hp.com
ns1.hp.com internet address = 15.219.145.12
ns2.hp.com internet address = 15.219.160.12
ns3.hp.com internet address = 15.203.209.12
ns4.hp.com internet address = 15.203.224.14
ns5.hp.com internet address = 15.195.192.37
ns6.hp.com internet address = 15.195.208.12
再換成HP內部IP試
Default Server: grenoble.europe.hp.net
Address: 15.219.160.12
> hp.com
Server: grenoble.europe.hp.net
Address: 15.219.160.12
hp.com MX preference = 10, mail exchanger = smtp.hp.com
hp.com nameserver = ns6.hp.com
hp.com nameserver = ns1.hp.com
hp.com nameserver = ns2.hp.com
hp.com nameserver = ns3.hp.com
hp.com nameserver = ns4.hp.com
hp.com nameserver = ns5.hp.com
ns1.hp.com internet address = 15.219.145.12
ns2.hp.com internet address = 15.219.160.12
ns3.hp.com internet address = 15.203.209.12
ns4.hp.com internet address = 15.203.224.14
ns5.hp.com internet address = 15.195.192.37
ns6.hp.com internet address = 15.195.208.12
Default Server: dns.hinet.net
Address: 168.95.1.1
> google.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
Name: google.com
Addresses: 72.14.203.99, 72.14.203.103, 72.14.203.104, 72.14.203.105
72.14.203.106, 72.14.203.147
> set type=all
> google.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
google.com internet address = 74.125.153.103
google.com internet address = 74.125.153.104
google.com internet address = 74.125.153.105
google.com internet address = 74.125.153.106
google.com internet address = 74.125.153.147
google.com internet address = 74.125.153.99
google.com nameserver = ns3.google.com
google.com nameserver = ns4.google.com
google.com nameserver = ns2.google.com
google.com nameserver = ns1.google.com
google.com nameserver = ns4.google.com
google.com nameserver = ns2.google.com
google.com nameserver = ns1.google.com
google.com nameserver = ns3.google.com
ns1.google.com internet address = 216.239.32.10
ns2.google.com internet address = 216.239.34.10
ns3.google.com internet address = 216.239.36.10
ns4.google.com internet address = 216.239.38.10
> set type=mx
> google.com
Server: dns.hinet.net
Address: 168.95.1.1
Non-authoritative answer:
google.com MX preference = 200, mail exchanger = google.com.s9a2.psmtp.com
google.com MX preference = 300, mail exchanger = google.com.s9b1.psmtp.com
google.com MX preference = 400, mail exchanger = google.com.s9b2.psmtp.com
google.com MX preference = 100, mail exchanger = google.com.s9a1.psmtp.com
google.com nameserver = ns4.google.com
google.com nameserver = ns2.google.com
google.com nameserver = ns3.google.com
google.com nameserver = ns1.google.com
google.com.s9a1.psmtp.com internet address = 74.125.148.10
google.com.s9a2.psmtp.com internet address = 74.125.148.11
google.com.s9b1.psmtp.com internet address = 74.125.148.13
google.com.s9b2.psmtp.com internet address = 74.125.148.14
ns1.google.com internet address = 216.239.32.10
ns2.google.com internet address = 216.239.34.10
ns3.google.com internet address = 216.239.36.10
ns4.google.com internet address = 216.239.38.10
> server 168.95.192.1
Default Server: hntp1.hinet.net
Address: 168.95.192.1
> set type=mx
> google.com
Server: hntp1.hinet.net
Address: 168.95.192.1
Non-authoritative answer:
google.com MX preference = 400, mail exchanger = google.com.s9b2.psmtp.com
google.com MX preference = 100, mail exchanger = google.com.s9a1.psmtp.com
google.com MX preference = 200, mail exchanger = google.com.s9a2.psmtp.com
google.com MX preference = 300, mail exchanger = google.com.s9b1.psmtp.com
google.com nameserver = ns3.google.com
google.com nameserver = ns4.google.com
google.com nameserver = ns1.google.com
google.com nameserver = ns2.google.com
google.com.s9a1.psmtp.com internet address = 74.125.148.10
google.com.s9a2.psmtp.com internet address = 74.125.148.11
google.com.s9b1.psmtp.com internet address = 74.125.148.13
google.com.s9b2.psmtp.com internet address = 74.125.148.14
ns1.google.com internet address = 216.239.32.10
ns3.google.com internet address = 216.239.36.10
ns4.google.com internet address = 216.239.38.10
本機
C:\WINDOWS\system32\drivers\etc\host
Refreshes all DHCP leases and re-registers DNS names
Display the contents of the DNS Resolver Cache
Purges the DNS Resolver cache
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