rockystudy.com - dns.ninja

`rockystudy.com`

DNSSEC	⚠️ Not signed
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.sendcloud.org` ⭐
		A	106.75.34.64^{🇨🇳 CHINA169-BJ106.75.32.0/19 China Telecom Beijing Co. Ltd.}
			PTR	`8myfhq.cn`
			PTR	`mail.lianjiecaijing.com`
			PTR	`mail.mifanwangluo.com`
			PTR	`mail.modefense.com`
		A	106.75.109.68^{🇨🇳 CHINA169-BJ106.75.96.0/19 China Telecom Beijing Co. Ltd.}
			PTR	`mx.sendcloud.org`
TXT	`v=spf1 include:spf.sendcloud.org ~all`
TXT	`2144c3d6-63fd-430c-a8dd-932d126b1213-1460528516469`
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=1786274119

Subdomains

mail.rockystudy.com

ceshi.rockystudy.com

www.rockystudy.com

Same first word

rockystudy.com

DNS History

8 records (3 active, 5 former)

●NSdns15.hichina.com2017-07-08 → 2026-08-09 · 3 obs

○ 2016-12-03 22:22:16
● 2017-07-08 10:01:46
● 2026-08-09 11:40:20

●NSdns16.hichina.com2017-07-08 → 2026-08-09 · 3 obs

○ 2016-12-03 22:22:16
● 2017-07-08 10:01:46
● 2026-08-09 11:40:20

○NSns11.edong.com2015-11-04 → 2016-12-03 · 5 obs

○ 2015-07-03 09:59:10
● 2015-11-04 10:47:42
● 2016-12-03 22:22:16
○ 2017-07-08 10:01:46
○ 2026-08-09 11:40:20

○NSns12.edong.com2015-07-03 → 2016-12-03 · 4 obs

● 2015-07-03 09:59:10
● 2016-12-03 22:22:16
○ 2017-07-08 10:01:46
○ 2026-08-09 11:40:20

○MXmail.rockystudy.com2015-07-03 → 2016-12-03 · 4 obs

● 2015-07-03 09:59:10
● 2016-12-03 22:22:16
○ 2017-07-08 10:01:46
○ 2026-08-09 11:40:20

●MXmx.sendcloud.org2017-07-08 → 2026-08-09 · 3 obs

○ 2016-12-03 22:22:16
● 2017-07-08 10:01:46
● 2026-08-09 11:40:20

○A106.75.154.1462017-07-08 → 2017-07-08 · 4 obs

○ 2016-12-03 22:22:16
● 2017-07-08 10:01:46
○ 2026-04-08 11:27:42
○ 2026-08-09 11:40:20

○A61.174.8.2202015-07-03 → 2016-12-03 · 4 obs

● 2015-07-03 09:59:10
● 2016-12-03 22:22:16
○ 2017-07-08 10:01:46
○ 2026-08-09 11:40:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
rockystudy.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 rockystudy.com (unsigned zone)

⏱️ Timing

Total: 3500ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns16.hichina.com, dns15.hichina.com`
MX	1	`mx.sendcloud.org (pri: 1)`
TXT	2	`v=spf1 include:spf.sendcloud.org ~all, 2144c3d6-63fd-430c-a8dd-932d126b1213-146`
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

Hierarchy

The domain rockystudy.com is parent to mail.rockystudy.com, ceshi.rockystudy.com and www.rockystudy.com.

Name Servers

DNS delegation for rockystudy.com points to two name servers: dns15.hichina.com and dns16.hichina.com.

rockystudy.com uses the same name servers as several other domains — among them eazylink.cn, sywenhua.com, genetimes.net and two more.

rockystudy.com shares at least some of its name servers with other domains, for example cyouf.cyou, lodough.com, embody.cn and lsrj.com.

These name servers tend to be deployed in combination with the name servers expirens3.hichina.com and expirens4.hichina.com.

Hostnames that resolve to 9 IP addresses:

dns15.hichina.com has IP addresses 39.96.153.42, 39.96.153.52 and 47.118.199.202, plus 6 other.

dns16.hichina.com has IP addresses 39.96.153.41, 39.96.153.51 and 47.118.199.201, plus 6 other.

Mail Servers

Mail for rockystudy.com is handled by a single mail server, mx.sendcloud.org.

rockystudy.com uses an identical mail server configuration to several other domains — among them testmail.oatos.com, cocmc.com, ucmailus02.sendcloud.org and two more.

rockystudy.com has at least partial mail server overlap with other domains such as iyoubon.com, rakufun.com, welleke.com and two more.

It is common to see these mail servers combined with the mail servers mxn.mxhichina.com, mxw.mxhichina.com and mx.ym.163.com.

mx.sendcloud.org directs to two IP numbers, 106.75.34.64 and 106.75.109.68.