cbstudy.com - dns.ninja

`cbstudy.com`

DNSSEC	⚠️ Not signed
A	120.27.203.130^{🇨🇳 Alibaba-Cloud120.27.192.0/18}
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	`mxbiz1.qq.com` ⭐
MX	`mxbiz2.qq.com`⁽¹⁰⁾
TXT	`v=spf1 include:spf.mail.qq.com ~all`
SOA	`dns15.hichina.com`hostmaster@hichina.com 2026-01-12 #9

`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=1785859944

Previously NS for

cbstudy.com

Same first word

cbstudy.net

cbstudy.com

Similar names

bcstudy.com

DNS History

18 records (5 active, 13 former)

○NScbstudy.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

●NSdns15.hichina.com2026-03-16 → 2026-08-04 · 3 obs

○ 2015-10-23 08:53:56
● 2026-03-16 08:52:54
● 2026-08-04 16:16:48

●NSdns16.hichina.com2026-03-16 → 2026-08-04 · 3 obs

○ 2015-10-23 08:53:56
● 2026-03-16 08:52:54
● 2026-08-04 16:16:48

○NSns.cafe24.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

○NSns0.cafe24.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

○NSns1.cafe24.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

○NSns1.dnstool.net2008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

○NSns2.cafe24.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

○NSns2.dnstool.net2008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

○NSns5.dnstool.net2008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

○NSns7.dnstool.net2008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

○NSns8.dnstool.net2008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

●MXmxbiz1.qq.com2026-03-16 → 2026-08-04 · 3 obs

○ 2015-10-23 08:53:56
● 2026-03-16 08:52:54
● 2026-08-04 16:16:48

●MXmxbiz2.qq.com2026-03-16 → 2026-08-04 · 3 obs

○ 2015-10-23 08:53:56
● 2026-03-16 08:52:54
● 2026-08-04 16:16:48

○MXwa64-073.cafe24.com2015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

●A120.27.203.1302026-03-16 → 2026-08-04 · 3 obs

○ 2015-10-23 08:53:56
● 2026-03-16 08:52:54
● 2026-08-04 16:16:48

○A222.122.84.472015-06-07 → 2015-06-07 · 4 obs

○ 2008-11-14 17:00:14
● 2015-06-07 09:42:04
○ 2015-10-23 08:53:56
○ 2026-08-04 16:16:48

○A69.73.158.562008-11-14 → 2008-11-14 · 3 obs

● 2008-11-14 17:00:14
○ 2015-06-07 09:42:04
○ 2026-08-04 16:16:48

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
cbstudy.com	dns15.hichina.com, dns16.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.42

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cbstudy.com (unsigned zone)

⏱️ Timing

Total: 4115ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`120.27.203.130`
NS	2	`dns15.hichina.com, dns16.hichina.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	`dns15.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns15.hichina.com, dns15.hichina.com, dns15.hichina.com...)

Analysis

IP Addresses

cbstudy.com resolves to just one IP address, 120.27.203.130.

Name Servers

Two name servers handle the delegation for cbstudy.com: dns15.hichina.com and dns16.hichina.com.

cbstudy.com shares its NS records with other domains, for example tangelo.com.cn, ytgifts.com, dzhi.com and two others.

cbstudy.com has at least partial name server overlap with other domains, such as xmzsly.top, zibociye.com, rzkk.cn and two others.

It is common to see these name servers used together with name servers expirens3.hichina.com and expirens4.hichina.com.

DNS names with 9 IP addresses:

dns15.hichina.com resolves to 39.96.153.42, 39.96.153.52 and 47.118.199.202 among others, with 6 other IP addresses in total.

dns16.hichina.com resolves to 39.96.153.41, 39.96.153.51 and 47.118.199.201 among others, with 6 other IP addresses in total.

Mail Servers

cbstudy.com is served by two mail servers, mxbiz1.qq.com and mxbiz2.qq.com.

Among the domains sharing a mail server setup with cbstudy.com are cntissue.com, shangyuanwh.com, rosatina.com and two others.

There is at least a partial MX overlap between cbstudy.com and other domains, including kinmarker.com, kakayin.com, jwdsk.cn and two others.