`studyfr.com.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:8033^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:bb^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.0.187^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.128.51^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`amos.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amos.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c378^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`amos.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2378^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`amos.ns.cloudflare.com`
		A	108.162.195.120^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amos.ns.cloudflare.com`
		A	162.159.44.120^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amos.ns.cloudflare.com`
		A	172.64.35.120^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amos.ns.cloudflare.com`
NS	`teagan.ns.cloudflare.com`
		A	2606:4700:50::a29f:26ae^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teagan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ae^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`teagan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ae^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`teagan.ns.cloudflare.com`
		A	108.162.194.174^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teagan.ns.cloudflare.com`
		A	162.159.38.174^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teagan.ns.cloudflare.com`
		A	172.64.34.174^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teagan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.0.187, 172.67.128.51
		IPv6	2606:4700:3032::ac43:8033, 2606:4700:3036::6815:bb
SOA	`amos.ns.cloudflare.com`dns@cloudflare.com serial=2399055479

`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=2030476006

WOT: NOT_SAFE (20/100)

Same first word

studyfr.com.cn

studyfr.net

Similar names

studyrf.com

DNS History

19 records (6 active, 13 former)

●NSamos.ns.cloudflare.com2026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

○NSdm1.longmingdns.com2026-03-12 → 2026-03-25 · 2 obs

○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSdm2.longmingdns.com2026-03-12 → 2026-03-25 · 2 obs

○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSdns13.hichina.com2008-11-28 → 2008-11-28 · 3 obs

● 2008-11-28 02:23:54
○ 2015-07-26 16:48:40
○ 2026-03-25 07:26:04

○NSdns14.hichina.com2008-11-28 → 2008-11-28 · 3 obs

● 2008-11-28 02:23:54
○ 2015-07-26 16:48:40
○ 2026-03-25 07:26:04

○NSns1.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSns2.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSns3.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSns4.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSns5.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

○NSns6.myhostadmin.net2020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

●NSteagan.ns.cloudflare.com2026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

●A104.21.0.1872026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

○A107.148.185.1392026-03-12 → 2026-03-25 · 2 obs

○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

●A172.67.128.512026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

○A221.122.67.1122008-11-28 → 2008-11-28 · 3 obs

● 2008-11-28 02:23:54
○ 2015-07-26 16:48:40
○ 2026-03-25 07:26:04

○A23.82.220.542020-02-18 → 2020-02-18 · 4 obs

○ 2015-07-26 16:48:40
● 2020-02-18 22:56:00
○ 2026-03-12 06:25:38
○ 2026-03-25 07:26:04

●A2606:4700:3032::ac43:80332026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

●A2606:4700:3036::6815:bb2026-03-12 → 2026-03-25 · 3 obs

○ 2020-02-18 22:56:00
● 2026-03-12 06:25:38
● 2026-03-25 07:26:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	b.dns.cn, d.dns.cn, e.dns.cn, a.dns.cn...	-
studyfr.com.cn	amos.ns.cloudflare.com, teagan.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.174

NS records: amos.ns.cloudflare.com, teagan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 491ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.0.187, 172.67.128.51`
AAAA	2	`2606:4700:3036::6815:bb, 2606:4700:3032::ac43:8033`
NS	2	`amos.ns.cloudflare.com, teagan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`amos.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

studyfr.com.cn maps to four IP numbers: 2606:4700:3032::ac43:8033, 2606:4700:3036::6815:bb, 104.21.0.187 and 172.67.128.51.

Other host names, for instance gd-rl.cn, mail.swestream.se, hzyidai.com, www.sagemakerworkshop.com and thiraialayam.com share IP numbers with studyfr.com.cn.

Name Servers

Two name servers amos.ns.cloudflare.com and teagan.ns.cloudflare.com are delegated to studyfr.com.cn.

studyfr.com.cn uses the same name server configuration as other domains, such as hdosmj.com.cn, nygt.com.cn, pukeke.com.cn, tfl.net.cn and magiceng.com.cn.

studyfr.com.cn at least partially shares name servers with other domains such as phonecovers.pk, resiliencyadvantage.com, whlianzhi.com, jzjmzs.com and df8801.com.

These name servers are commonly used alongside carl.ns.cloudflare.com, cortney.ns.cloudflare.com and dane.ns.cloudflare.com.

Host names with six IP numbers: Host name amos.ns.cloudflare.com points to 2606:4700:58::a29f:2c78, 2803:f800:50::6ca2:c378, 2a06:98c1:50::ac40:2378, 108.162.195.120, 162.159.44.120 and 172.64.35.120; host name teagan.ns.cloudflare.com points to 2606:4700:50::a29f:26ae, 2803:f800:50::6ca2:c2ae, 2a06:98c1:50::ac40:22ae, 108.162.194.174, 162.159.38.174 and 172.64.34.174.

studyfr.com.cn - robtex.com

studyfr.com.cn

com.cn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`studyfr.com.cn`

`com.cn`