`collegesoft.com.cn`

DNSSEC	⚠️ Not signed
NS	`ns1.sfn.cn` ⭐
		A	111.63.77.29^{🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route)}
NS	`ns2.sfn.cn`
		A	101.37.119.99^{🇨🇳 Alibaba-Cloud101.37.0.0/17}
		A	111.63.77.30^{🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route)}
MX	`mxbiz1.qq.com` ⭐
TXT	`176435316-57739846`
SOA	`ns1.sfn.cn`root@ns1.sfn.cn 2026-04-06 #16

`com.cn`

	DNSSEC	⚠️ Not signed
	NS	`a.dns.cn` ⭐ ⚠️ Not in parent delegation
	NS	`b.dns.cn` ⚠️ Not in parent delegation
	NS	`c.dns.cn` ⚠️ Not in parent delegation
	NS	`cns.cernet.net` ⚠️ Not in parent delegation
	NS	`d.dns.cn` ⚠️ Not in parent delegation
	NS	`e.dns.cn` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2030510728

WOT: NOT_SAFE (20/100)

Subdomains

dns.collegesoft.com.cn

Same first word

collegesoft.com.cn

collegesoft.com

DNS History

5 records (3 active, 2 former)

○NSdns.collegesoft.com.cn2015-08-04 → 2017-11-27 · 4 obs

● 2015-08-04 15:32:22
● 2017-11-27 00:31:42
○ 2026-04-03 13:45:44
○ 2026-04-12 11:37:02

○NSdns2.collegesoft.com.cn2016-12-31 → 2017-11-27 · 5 obs

○ 2015-08-04 15:32:22
● 2016-12-31 23:03:46
● 2017-11-27 00:31:42
○ 2026-04-03 13:45:44
○ 2026-04-12 11:37:02

●NSns1.sfn.cn2026-04-03 → 2026-04-12 · 3 obs

○ 2017-11-27 00:31:42
● 2026-04-03 13:45:44
● 2026-04-12 11:37:02

●NSns2.sfn.cn2026-04-03 → 2026-04-12 · 3 obs

○ 2017-11-27 00:31:42
● 2026-04-03 13:45:44
● 2026-04-12 11:37:02

●MXmxbiz1.qq.com2015-08-04 → 2026-04-12 · 2 obs

● 2015-08-04 15:32:22
● 2026-04-12 11:37:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
collegesoft.com.cn	ns1.sfn.cn, ns2.sfn.cn	-

✅ Authoritative Response

Server:111.63.77.29

NS records: ns1.sfn.cn, ns2.sfn.cn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for collegesoft.com.cn (unsigned zone)

⏱️ Timing

Total: 2238ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns2.sfn.cn, ns1.sfn.cn`
MX	1	`mxbiz1.qq.com (pri: 2)`
TXT	1	`176435316-57739846`
SOA	1	`ns1.sfn.cn root.ns1.sfn.cn`

Analysis

Hierarchy

The parent of dns.collegesoft.com.cn is collegesoft.com.cn.

Name Servers

Two name servers ns1.sfn.cn and ns2.sfn.cn handle the delegation for collegesoft.com.cn.

collegesoft.com.cn shares the same name server setup as other domains, for instance weiyu.sh.cn, 6408.com.cn, paleomag.ac.cn, atmb.com.cn and china-ocr.com.

collegesoft.com.cn at least partially shares name servers with other domains, such as zjc.com.cn, xtel.cn and scedu.com.cn.

Host names with two IP numbers: ns2.sfn.cn points to 101.37.119.99 and 111.63.77.30.

Host names with one IP number: ns1.sfn.cn points to 111.63.77.29.

Mail Servers

collegesoft.com.cn is handled by a single mail server, mxbiz1.qq.com.

collegesoft.com.cn uses the same mail server setup as other domains, for instance 3good.net, hxgp.com, uhangad.com, sao.bi and hzrope.com.

collegesoft.com.cn shares at least partially some mail servers with other domains, for instance ht88.com, fcelec.cn, holchip.com, toolsparks.com and evertechcn.com.

these mail servers are commonly used together with mxbiz2.qq.com.

collegesoft.com.cn - robtex.com