`phdchina.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::6815:37be^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::ac43:ac69^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.55.190^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.172.105^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`bailey.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2629^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c229^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`bailey.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2229^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`bailey.ns.cloudflare.com`
		A	108.162.194.41^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	162.159.38.41^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
		A	172.64.34.41^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`bailey.ns.cloudflare.com`
NS	`norm.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b86^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c186^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`norm.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2186^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`norm.ns.cloudflare.com`
		A	108.162.193.134^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	172.64.33.134^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
		A	173.245.59.134^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`norm.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.55.190, 172.67.172.105
		IPv6 hints	2606:4700:3031::6815:37be, 2606:4700:3033::ac43:ac69
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=234, name=cloudflare-ech.com
SOA	`bailey.ns.cloudflare.com`dns@cloudflare.com serial=2409488477

`net`

	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=1785522922

Same first word

phdchina.net

phdchina.org

Similar names

chinaphd.cn

chinaphd.com

padchinh.in

hpdchina.com

chinaphd.net

DNS History

15 records (6 active, 9 former)

○NSaspen.ns.cloudflare.com2026-03-22 → 2026-07-31 · 2 obs

○ 2026-03-22 16:45:24
○ 2026-07-31 18:40:54

●NSbailey.ns.cloudflare.com2026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

○NShenry.ns.cloudflare.com2026-03-22 → 2026-07-31 · 2 obs

○ 2026-03-22 16:45:24
○ 2026-07-31 18:40:54

●NSnorm.ns.cloudflare.com2026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

○NSns1.ce.net.cn2015-07-18 → 2017-03-15 · 4 obs

● 2015-07-18 22:08:54
● 2017-03-15 03:26:18
○ 2020-01-04 07:07:24
○ 2026-07-31 18:40:54

○NSns11.xincache.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-03-15 03:26:18
● 2020-01-04 07:07:24
○ 2026-03-22 16:45:24
○ 2026-07-31 18:40:54

○NSns12.xincache.com2020-01-04 → 2020-01-04 · 4 obs

○ 2017-03-15 03:26:18
● 2020-01-04 07:07:24
○ 2026-03-22 16:45:24
○ 2026-07-31 18:40:54

○MXmail.phdchina.net2015-07-18 → 2016-06-26 · 4 obs

● 2015-07-18 22:08:54
● 2016-06-26 07:36:54
○ 2017-03-15 03:26:18
○ 2026-07-31 18:40:54

●A104.21.55.1902026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

○A156.237.172.1792026-03-22 → 2026-07-31 · 2 obs

○ 2026-03-22 16:45:24
○ 2026-07-31 18:40:54

●A172.67.172.1052026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

●A2606:4700:3031::6815:37be2026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

●A2606:4700:3033::ac43:ac692026-07-09 → 2026-07-31 · 3 obs

○ 2026-03-22 16:45:24
● 2026-07-09 12:43:34
● 2026-07-31 18:40:54

○A61.129.14.1632015-07-18 → 2017-03-15 · 4 obs

● 2015-07-18 22:08:54
● 2017-03-15 03:26:18
○ 2020-01-04 07:07:24
○ 2026-07-31 18:40:54

○CNAMEwww.pizzahut.com.cn2015-07-18 → 2017-03-15 · 4 obs

● 2015-07-18 22:08:54
● 2017-03-15 03:26:18
○ 2020-01-04 07:07:24
○ 2026-07-31 18:40:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	c.gtld-servers.net, l.gtld-servers.net, h.gtld-servers.net, b.gtld-servers.net...	-
phdchina.net	norm.ns.cloudflare.com, bailey.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.33.134

NS records: norm.ns.cloudflare.com, bailey.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for phdchina.net (unsigned zone)

⏱️ Timing

Total: 320ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.172.105, 104.21.55.190`
AAAA	2	`2606:4700:3033::ac43:ac69, 2606:4700:3031::6815:37be`
NS	2	`bailey.ns.cloudflare.com, norm.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`bailey.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

phdchina.net directs to four IP numbers, which are 104.21.55.190, 172.67.172.105, 2606:4700:3031::6815:37be and 2606:4700:3033::ac43:ac69.

Two other host names, along with lisatxguide.com, threesaintsrevival.com and vccmuug.surf, also share IP numbers with phdchina.net.

Name Servers

phdchina.net uses two name servers for its delegation: bailey.ns.cloudflare.com and norm.ns.cloudflare.com.

phdchina.net shares its NS records with other domains, for example yule40.com, hnhkdl.com, qdq1.com and two others.

The name servers of phdchina.net overlap at least partially with those of other domains — among them mcache.org, bing-bong-casinos.com, nagarikjob.com and two more.

These name servers commonly appear in combination with the name servers lady.ns.cloudflare.com.

DNS names with 6 IP addresses:

Hostname bailey.ns.cloudflare.com directs to 108.162.194.41, 162.159.38.41 and 172.64.34.41 along with 3 other IP addresses.

Hostname norm.ns.cloudflare.com directs to 108.162.193.134, 172.64.33.134 and 173.245.59.134 along with 3 other IP addresses.

phdchina.net - robtex.com

phdchina.net

net

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`phdchina.net`

`net`