🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`211study.com`

CNAME	`expired.hichina.com`
DNSSEC	⚠️ Not signed
A	8.218.208.240^{🇭🇰 Alibaba-Cloud8.218.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
A	47.76.127.217^{🇺🇸 Alibaba-Cloud47.76.0.0/17 Proxy-registered route object}
A	47.91.170.222^{🇭🇰 Alibaba-Cloud47.91.128.0/18 Alibaba Cloud}
NS	`ns1.alidns.com` ⭐ ⚠️ Not in parent delegation
		A	2408:4009:501::1^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.45^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.55^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.205^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.215^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.45^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.55^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.115^{🇨🇳 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	139.224.142.125^{🇨🇳 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	`ns2.alidns.com` ⚠️ Not in parent delegation
		A	2408:4009:501::2^{🇨🇳 Alibaba-Cloud2408:4009:501::/48}
		A	39.96.153.46^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	39.96.153.56^{🇨🇳 Alibaba-Cloud39.96.0.0/14 CT BeiJing IDC}
		A	47.118.199.206^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	47.118.199.216^{🇨🇳 Alibaba-Cloud47.118.128.0/17 Alibaba (US) Technology Co., Ltd.}
		A	120.76.107.46^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	120.76.107.56^{🇨🇳 Alibaba-Cloud120.76.0.0/17}
		A	139.224.142.116^{🇨🇳 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	139.224.142.126^{🇨🇳 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,}
SOA	`ns1.alidns.com`hostmaster@hichina.com 2026-08-18 #13

`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=1794565026

Same first word

211study.com

Similar names

study121.workers.dev

study211.com

121study.com

study211.workers.dev

study211.cn

study121.com

Previous names

Next names

DNS History

6 records (5 active, 1 former)

●NSdns19.hichina.com2015-08-20 → 2026-11-13 · 2 obs

● 2015-08-20 14:15:34
● 2026-11-13 10:41:58

●NSdns20.hichina.com2015-08-20 → 2026-11-13 · 2 obs

● 2015-08-20 14:15:34
● 2026-11-13 10:41:58

●NSexpirens3.hichina.com2026-10-13 → 2026-11-13 · 3 obs

○ 2015-08-20 14:15:34
● 2026-10-13 18:18:26
● 2026-11-13 10:41:58

●NSexpirens4.hichina.com2026-10-13 → 2026-11-13 · 3 obs

○ 2015-08-20 14:15:34
● 2026-10-13 18:18:26
● 2026-11-13 10:41:58

○A121.198.101.1142015-08-20 → 2020-03-04 · 4 obs

● 2015-08-20 14:15:34
● 2020-03-04 23:51:32
○ 2026-10-13 18:18:26
○ 2026-11-13 10:41:58

●CNAMEexpired.hichina.com2026-10-13 → 2026-11-13 · 2 obs

● 2026-10-13 18:18:26
● 2026-11-13 10:41:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
211study.com	expirens3.hichina.com, expirens4.hichina.com	18 records

✅ Authoritative Response

Server:47.118.199.192

NS records: expirens3.hichina.com, expirens4.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 211study.com (unsigned zone)

⏱️ Timing

Total: 1002ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns20.hichina.com, dns19.hichina.com`
CNAME	1	`expired.hichina.com`
SOA	1	`dns19.hichina.com hostmaster.hichina.com`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (expirens3.hichina.com, expirens3.hichina.com, expirens3.hichina.com...)

Analysis

IP Addresses

211study.com maps to three IP numbers — 8.218.208.240, 47.76.127.217 and 47.91.170.222.

Additional host names — 50272.com, 492606bbs-xlu1.top, 91os.top and two others — share IP numbers with 211study.com.

Name Servers

211study.com uses two name servers for its delegation: ns1.alidns.com and ns2.alidns.com.

211study.com shares its name server setup with other domains, including i520.gay, cubjhtn.cn, k-9se30.garden and two others.

211study.com has at least partial name server overlap with other domains, such as uwintools.com, vx-mcu.casa, bamaemall.com and two others.

ns7.alidns.com, ns8.alidns.com and ns3.afternic.com — plus 5 other name servers — are commonly paired with these name servers.

Host names with 9 IP numbers:

Hostname ns1.alidns.com directs to 39.96.153.45, 39.96.153.55 and 47.118.199.205 along with 6 other IP addresses.

Hostname ns2.alidns.com directs to 39.96.153.46, 39.96.153.56 and 47.118.199.206 along with 6 other IP addresses.

211study.com - robtex.com

211study.com

com