`doctortj.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:886d^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:1a8b^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.26.139^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.136.109^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`matias.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c49^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c349^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`matias.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2349^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`matias.ns.cloudflare.com`
		A	108.162.195.73^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	162.159.44.73^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
		A	172.64.35.73^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`matias.ns.cloudflare.com`
NS	`thea.ns.cloudflare.com`
		A	2606:4700:50::a29f:26f7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thea.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2f7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`thea.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22f7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`thea.ns.cloudflare.com`
		A	108.162.194.247^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thea.ns.cloudflare.com`
		A	162.159.38.247^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thea.ns.cloudflare.com`
		A	172.64.34.247^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`thea.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.26.139, 172.67.136.109
		IPv6 hints	2606:4700:3030::ac43:886d, 2606:4700:3034::6815:1a8b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com
SOA	`matias.ns.cloudflare.com`dns@cloudflare.com serial=2402319243

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034782670

Subdomains

www.doctortj.cn

Same first word

doctortj.cn

Similar names

doctorjt.cn

DNS History

19 records (6 active, 13 former)

○NSdm1.longmingdns.com2026-02-22 → 2026-04-15 · 4 obs

○ 2017-12-27 15:52:54
● 2026-02-22 10:10:30
● 2026-04-15 16:37:18
○ 2026-05-12 11:22:58

○NSdm2.longmingdns.com2026-02-22 → 2026-04-15 · 4 obs

○ 2017-12-27 15:52:54
● 2026-02-22 10:10:30
● 2026-04-15 16:37:18
○ 2026-05-12 11:22:58

○NSdns1.iidns.com2015-11-12 → 2016-02-02 · 5 obs

○ 2015-07-14 08:44:28
● 2015-11-12 08:29:56
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○NSdns2.iidns.com2015-11-12 → 2016-02-02 · 5 obs

○ 2015-07-14 08:44:28
● 2015-11-12 08:29:56
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○NSdns3.iidns.com2015-11-12 → 2016-02-02 · 5 obs

○ 2015-07-14 08:44:28
● 2015-11-12 08:29:56
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○NSdns4.iidns.com2015-11-12 → 2016-02-02 · 5 obs

○ 2015-07-14 08:44:28
● 2015-11-12 08:29:56
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○NSdns5.iidns.com2015-11-12 → 2016-02-02 · 5 obs

○ 2015-07-14 08:44:28
● 2015-11-12 08:29:56
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○NSdns6.iidns.com2015-07-14 → 2016-02-02 · 4 obs

● 2015-07-14 08:44:28
● 2016-02-02 04:26:24
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

●NSmatias.ns.cloudflare.com2026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

○NSns1.dnsnw.com2017-12-27 → 2017-12-27 · 4 obs

○ 2016-02-02 04:26:24
● 2017-12-27 15:52:54
○ 2026-02-22 10:10:30
○ 2026-05-12 11:22:58

●NSthea.ns.cloudflare.com2026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

●A104.21.26.1392026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

○A172.247.35.832026-02-22 → 2026-04-05 · 5 obs

○ 2017-12-27 15:52:54
● 2026-02-22 10:10:30
● 2026-04-05 10:17:44
○ 2026-04-15 16:37:18
○ 2026-05-12 11:22:58

●A172.67.136.1092026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

●A2606:4700:3030::ac43:886d2026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

●A2606:4700:3034::6815:1a8b2026-05-12 → 2026-05-12 · 2 obs

○ 2026-04-15 16:37:18
● 2026-05-12 11:22:58

○A38.12.84.982026-04-15 → 2026-04-15 · 3 obs

○ 2026-04-05 10:17:44
● 2026-04-15 16:37:18
○ 2026-05-12 11:22:58

○A59.60.10.1142016-04-20 → 2016-04-20 · 4 obs

○ 2016-02-02 04:26:24
● 2016-04-20 05:29:08
○ 2017-12-27 15:52:54
○ 2026-05-12 11:22:58

○A59.60.10.1192015-07-14 → 2017-12-27 · 6 obs

● 2015-07-14 08:44:28
● 2016-02-02 04:26:24
○ 2016-04-20 05:29:08
● 2017-12-27 15:52:54
○ 2026-02-22 10:10:30
○ 2026-05-12 11:22:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
doctortj.cn	thea.ns.cloudflare.com, matias.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.73

NS records: thea.ns.cloudflare.com, matias.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for doctortj.cn (unsigned zone)

⏱️ Timing

Total: 818ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.26.139, 172.67.136.109`
AAAA	2	`2606:4700:3030::ac43:886d, 2606:4700:3034::6815:1a8b`
NS	2	`matias.ns.cloudflare.com, thea.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`matias.ns.cloudflare.com dns.cloudflare.`

Analysis

Hierarchy

doctortj.cn is the parent of www.doctortj.cn.

IP Addresses

doctortj.cn points to four IP numbers: 2606:4700:3030::ac43:886d, 2606:4700:3034::6815:1a8b, 104.21.26.139 and 172.67.136.109.

For instance, other host names psittacus.store, mysavinggenie.com, www.anvarit.com, www.sdxfky.com and rbxcrew.com share IP numbers with doctortj.cn.

Name Servers

doctortj.cn is delegated to two name servers: matias.ns.cloudflare.com and thea.ns.cloudflare.com.

doctortj.cn uses the same name server setup as other domains such as 88267.cn, hbhmgr.cn, qsey.cn, gstea.cn and rpar.cn.

doctortj.cn shares name servers with other domains at least partially, for example pcmail.com.tw, exin360.cn, kemmler.sk, cuwt.cn and qingsay.com.

These name servers are commonly used with the name servers ezra.ns.cloudflare.com and carla.ns.cloudflare.com.

Host names with six IP numbers: host name matias.ns.cloudflare.com points to: 2606:4700:58::a29f:2c49, 2803:f800:50::6ca2:c349, 2a06:98c1:50::ac40:2349, 108.162.195.73, 162.159.44.73 and 172.64.35.73; host name thea.ns.cloudflare.com points to: 2606:4700:50::a29f:26f7, 2803:f800:50::6ca2:c2f7, 2a06:98c1:50::ac40:22f7, 108.162.194.247, 162.159.38.247 and 172.64.34.247.

doctortj.cn - robtex.com

doctortj.cn

cn

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

`doctortj.cn`

`cn`