`mentorgroupco.com`

DNSSEC	⚠️ Not signed
A	111.231.140.37^{🇨🇳 TENCENT-NET-AP111.231.140.0/22}
NS	`ns11.xincache.com` ⭐
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns19.xincache.com`
		A	2402:4e00:1470:2::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1400::/40}
		A	2402:4e00:1730::e^{🇨🇳 TENCENT-NET-AP2402:4e00:1700::/40}
		A	1.12.0.4^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.180^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.45^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.173^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	125.94.59.210^{🇨🇳 CHINANET-BACKBONE125.88.0.0/13 chinanet Guangdong network}
		A	129.211.176.209^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
NS	`ns20.xincache.com`
		A	2402:4e00:111:fff::c^{🇨🇳 TENCENT-NET-AP2402:4e00::/35}
		A	1.12.0.1^{🇨🇳 TENCENT-NET-AP-CN1.12.0.0/20 ZL-IDC-BOM}
		A	36.155.149.176^{🇨🇳 CMNET-Jiangsu-AP36.155.144.0/21 CMI (Customer Route)}
		A	112.80.181.111^{🇨🇳 CHINA169-Backbone112.80.0.0/13 China Unicom CHINA169 Jiangsu Province Network}
		A	117.89.178.184^{🇨🇳 ChinaNet-NANJING-JISHAN-IDC117.89.176.0/21 JS-CT NJ-JS-IDC}
		A	129.211.176.239^{🇨🇳 TENCENT-NET-AP129.211.176.0/20}
		A	163.177.5.23^{🇨🇳 UNICOM-GuangZhou-IDC163.177.5.0/24}
MX	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`ns11.xincache.com`ns12@xincache.com serial=1747019173

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1774538762

Subdomains

www.mentorgroupco.com

Same first word

mentorgroupco.com

DNS History

13 records (6 active, 7 former)

●NSns11.xincache.com2026-03-01 → 2026-03-26 · 3 obs

○ 2017-01-05 14:58:30
● 2026-03-01 08:08:34
● 2026-03-26 15:53:58

○NSns13.xincache.com2015-06-17 → 2016-04-19 · 4 obs

● 2015-06-17 21:40:12
● 2016-04-19 15:08:16
○ 2017-01-05 14:58:30
○ 2026-03-26 15:53:58

○NSns14.xincache.com2015-06-17 → 2016-04-19 · 4 obs

● 2015-06-17 21:40:12
● 2016-04-19 15:08:16
○ 2017-01-05 14:58:30
○ 2026-03-26 15:53:58

●NSns19.xincache.com2017-01-05 → 2026-03-26 · 3 obs

○ 2016-04-19 15:08:16
● 2017-01-05 14:58:30
● 2026-03-26 15:53:58

●NSns20.xincache.com2017-01-05 → 2026-03-26 · 3 obs

○ 2016-04-19 15:08:16
● 2017-01-05 14:58:30
● 2026-03-26 15:53:58

○MXantic0.stnc.cn2015-06-17 → 2015-10-29 · 4 obs

● 2015-06-17 21:40:12
● 2015-10-29 13:57:28
○ 2016-01-23 06:19:58
○ 2026-03-26 15:53:58

●MXmxbiz1.qq.com2016-01-23 → 2026-03-26 · 3 obs

○ 2015-10-29 13:57:28
● 2016-01-23 06:19:58
● 2026-03-26 15:53:58

●MXmxbiz2.qq.com2016-01-23 → 2026-03-26 · 3 obs

○ 2015-10-29 13:57:28
● 2016-01-23 06:19:58
● 2026-03-26 15:53:58

●A111.231.140.372026-03-01 → 2026-03-26 · 3 obs

○ 2018-01-29 16:57:54
● 2026-03-01 08:08:34
● 2026-03-26 15:53:58

○A119.10.33.742017-01-05 → 2017-01-05 · 4 obs

○ 2016-04-19 15:08:16
● 2017-01-05 14:58:30
○ 2018-01-29 16:57:54
○ 2026-03-26 15:53:58

○A119.10.61.2082016-04-19 → 2016-04-19 · 4 obs

○ 2016-01-23 06:19:58
● 2016-04-19 15:08:16
○ 2017-01-05 14:58:30
○ 2026-03-26 15:53:58

○A122.14.215.1222018-01-29 → 2018-01-29 · 4 obs

○ 2017-01-05 14:58:30
● 2018-01-29 16:57:54
○ 2026-03-01 08:08:34
○ 2026-03-26 15:53:58

○A61.155.154.842015-06-17 → 2016-01-23 · 4 obs

● 2015-06-17 21:40:12
● 2016-01-23 06:19:58
○ 2016-04-19 15:08:16
○ 2026-03-26 15:53:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	d.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net...	-
mentorgroupco.com	ns19.xincache.com, ns20.xincache.com	12 records

✅ Authoritative Response

Server:1.12.0.4

NS records: ns19.xincache.com, ns20.xincache.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mentorgroupco.com (unsigned zone)

⏱️ Timing

Total: 91ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`111.231.140.37`
NS	2	`ns19.xincache.com, ns20.xincache.com`
MX	2	`mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
SOA	1	`ns11.xincache.com ns12.xincache.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (ns19.xincache.com, ns19.xincache.com, ns19.xincache.com...)

Analysis

Hierarchy

The parent of www.mentorgroupco.com is mentorgroupco.com.

IP Addresses

mentorgroupco.com points to a single IP number: 111.231.140.37.

Other host names, for instance www.mentorgroupco.com, share IP numbers with mentorgroupco.com.

Name Servers

The domain mentorgroupco.com is delegated to three name servers: ns11.xincache.com, ns19.xincache.com and ns20.xincache.com.

mentorgroupco.com shares name servers with other domains at least partially, for instance greateagle.net.cn, kisag.cn, hnsw.com.cn, kqstl.com and cn-renhe.com.

these name servers are commonly used with ns12.xincache.com, ce1.xincache.com, ce2.xincache.com, ns13.xincache.com, ns14.xincache.com, ns17.xincache.com and ns18.xincache.com.

Host names with eight IP numbers:

ns11.xincache.com points to: 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.

ns19.xincache.com points to: 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.

Host names with seven IP numbers:

ns20.xincache.com points to: 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.

Names that point to 2402:4e00:1470:2::e: ns11.xincache.com and ns19.xincache.com.

Names that point to 2402:4e00:1730::e: ns11.xincache.com and ns19.xincache.com.

Names that point to 1.12.0.4: ns11.xincache.com and ns19.xincache.com.

Names that point to 36.155.149.180: ns11.xincache.com and ns19.xincache.com.

Names that point to 112.80.181.45: ns11.xincache.com and ns19.xincache.com.

Names that point to 117.89.178.173: ns11.xincache.com and ns19.xincache.com.

Names that point to 125.94.59.210: ns11.xincache.com and ns19.xincache.com.

Names that point to 129.211.176.209: ns11.xincache.com and ns19.xincache.com.

Mail Servers

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

mentorgroupco.com shares the same mail server setup as other domains, including nuotai.biz, qinqianhao.com, nyhz.com.cn, nhzb.com and fortunelec.com.

mentorgroupco.com shares some mail servers with other domains, including captsen.com, sc321.cn, waimao.la, hxpp.com.cn and chinazooron.com.

mentorgroupco.com - robtex.com