`thinkunion.com.cn`

DNSSEC	⚠️ Not signed
A	61.240.138.148^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
NS	`dns15.hichina.com` ⭐
		A	2408:4009:501::23^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.42^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.52^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.202^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.212^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.42^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.52^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.112^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.122^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
NS	`dns16.hichina.com`
		A	2408:4009:501::24^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.41^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.51^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.201^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.211^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.41^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.51^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.111^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	139.224.142.121^{🇨🇳 Alibaba-Cloud139.224.128.0/17 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
MX	`mx.thinkunion.com.cn` ⭐
		A	61.240.138.148^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-09 #13

`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=2030511084

WOT: NOT_SAFE (20/100)

Subdomains

mx.thinkunion.com.cn

Same first word

thinkunion.com.cn

DNS History

6 records (4 active, 2 former)

●NSdns15.hichina.com2015-08-14 → 2026-04-12 · 2 obs

● 2015-08-14 22:57:56
● 2026-04-12 17:44:04

●NSdns16.hichina.com2015-08-14 → 2026-04-12 · 2 obs

● 2015-08-14 22:57:56
● 2026-04-12 17:44:04

○MXmx.exmail.sina.com2015-08-14 → 2016-03-25 · 4 obs

● 2015-08-14 22:57:56
● 2016-03-25 10:59:54
○ 2017-01-09 08:43:30
○ 2026-04-12 17:44:04

●MXmx.thinkunion.com.cn2017-01-09 → 2026-04-12 · 3 obs

○ 2016-03-25 10:59:54
● 2017-01-09 08:43:30
● 2026-04-12 17:44:04

○A218.26.181.1202015-08-14 → 2020-08-02 · 4 obs

● 2015-08-14 22:57:56
● 2020-08-02 09:27:04
○ 2026-03-04 11:44:36
○ 2026-04-12 17:44:04

●A61.240.138.1482026-03-04 → 2026-04-12 · 3 obs

○ 2020-08-02 09:27:04
● 2026-03-04 11:44:36
● 2026-04-12 17:44:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	d.dns.cn, e.dns.cn, a.dns.cn, c.dns.cn...	-
thinkunion.com.cn	dns15.hichina.com, dns16.hichina.com	-

✅ Authoritative Response

Server:39.96.153.42

NS records: dns15.hichina.com, dns16.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 1959ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`61.240.138.148`
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	1	`mx.thinkunion.com.cn (pri: 1)`
SOA	1	`dns15.hichina.com hostmaster.hichina.com`

Analysis

Hierarchy

The parent of mx.thinkunion.com.cn is thinkunion.com.cn.

IP Addresses

thinkunion.com.cn points to IP number: 61.240.138.148.

Other host names, for instance mx.thinkunion.com.cn share IP numbers with thinkunion.com.cn.

Name Servers

thinkunion.com.cn is delegated to two name servers: dns15.hichina.com and dns16.hichina.com.

thinkunion.com.cn shares the same name server setup as ifa-edu.cn, cnaig.com, 7sunshine.com, mlj194.com and lasercutting.com.cn.

thinkunion.com.cn at least partially shares name servers with other domains, for instance ymsss.com, cntrtx.com, kstjt.com, jiayouka.vip and fcwjct.com.

These name servers are commonly used with expirens3.hichina.com and expirens4.hichina.com.

Nine IP numbers per host:

dns15.hichina.com points to: 2408:4009:501::23, 39.96.153.42, 39.96.153.52, 47.118.199.202, 47.118.199.212, 120.76.107.42, 120.76.107.52, 139.224.142.112 and 139.224.142.122.

dns16.hichina.com points to: 2408:4009:501::24, 39.96.153.41, 39.96.153.51, 47.118.199.201, 47.118.199.211, 120.76.107.41, 120.76.107.51, 139.224.142.111 and 139.224.142.121.

Mail Servers

thinkunion.com.cn is handled by a single mail server, mx.thinkunion.com.cn.

mx.thinkunion.com.cn points to a single IP: 61.240.138.148.

thinkunion.com.cn - robtex.com