WWW.RTSAK.COM - precourse.cn

Search for IP or hostnames:

precourse.cn checked at 2025-10-03T16:00:42.821Z 2285ms 90/90/90 100% R:16

`precourse.cn`

MX	`mxbiz1.qq.com`
		A	103.86.78.2^{🇭🇰 HGC}
		A	103.86.78.3^{🇭🇰 HGC}
MX	`mxbiz2.qq.com`
		A	43.154.252.16^{🇭🇰 Tencent Global}
		A	43.154.252.202^{🇭🇰 Tencent Global}
NS	`ns1.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:34a ^{🇨🇳 Baidu Netcom Science and Technology Co., Ltd.}
		A	61.240.129.147^{🇨🇳 China Unicom}
		A	180.163.194.215^{🇨🇳 CHINANET-SH-AP}
NS	`ns2.dns.com.cn`
		A	240c:4082:ffff:ff01:0:d:0:69 ^{🇨🇳 Baidu Netcom Science and Technology Co., Ltd.}
		A	61.240.129.147^{🇨🇳 China Unicom}
		A	180.163.194.139^{🇨🇳 CHINANET-SH-AP}
A	121.43.156.162^{🇨🇳 Alibaba (China)}

`cn`

	NS	`a.dns.cn`
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net`

Starts with same word

precourse.cn

precourse.com

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AI analysis

precourse.cn points to a single IP: 121.43.156.162.

Two name servers ns1.dns.com.cn and ns2.dns.com.cn handle delegation for precourse.cn.

precourse.cn uses the same name server setup as other domains, for example 3sjob.com, fjiu.net, td-sf.com, gxtcjx.com and bjzkhs.com.

Host names with three IP numbers

ns1.dns.com.cn points to: 240c:4082:ffff:ff01:0:d:0:34a, 61.240.129.147 and 180.163.194.215.

ns2.dns.com.cn points to: 240c:4082:ffff:ff01:0:d:0:69, 61.240.129.147 and 180.163.194.139.

Host names that point to 61.240.129.147 are ns1.dns.com.cn and ns2.dns.com.cn.

precourse.cn is handled by two mail servers: mxbiz1.qq.com and mxbiz2.qq.com.

precourse.cn has the same mail server setup as other domains, including szlightlink.com, midoci.com, jimei.cn, kubt.cn and sz-xtjc.com.

precourse.cn shares some mail servers with other domains, at least partially, such as xmipi.com, wendaosoft.com, cnretec.com, tiktoppp.com and gdmei.com.

Host names with two IP numbers:

mxbiz1.qq.com points to: 103.86.78.2 and 103.86.78.3

mxbiz2.qq.com points to: 43.154.252.16 and 43.154.252.202

dbq