`china-postdoc.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:dafc^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5b7c^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.91.124^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.218.252^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`liz.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3abd^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0bd^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`liz.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20bd^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`liz.ns.cloudflare.com`
		A	108.162.192.189^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	172.64.32.189^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
		A	173.245.58.189^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`liz.ns.cloudflare.com`
NS	`vern.ns.cloudflare.com`
		A	2606:4700:58::adf5:3bf3^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vern.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1f3^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`vern.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21f3^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`vern.ns.cloudflare.com`
		A	108.162.193.243^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vern.ns.cloudflare.com`
		A	172.64.33.243^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vern.ns.cloudflare.com`
		A	173.245.59.243^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`vern.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.91.124, 172.67.218.252
		IPv6	2606:4700:3031::ac43:dafc, 2606:4700:3036::6815:5b7c
SOA	`liz.ns.cloudflare.com`dns@cloudflare.com serial=2399543087

`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=1775077447

Same first word

china-postdoc.com

DNS History

6 records (6 active, 0 former)

●NSliz.ns.cloudflare.com2026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

●NSvern.ns.cloudflare.com2026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

●A104.21.91.1242026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

●A172.67.218.2522026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

●A2606:4700:3031::ac43:dafc2026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

●A2606:4700:3036::6815:5b7c2026-02-20 → 2026-04-01 · 2 obs

● 2026-02-20 02:41:30
● 2026-04-01 21:08:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
china-postdoc.com	vern.ns.cloudflare.com, liz.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.192.189

NS records: vern.ns.cloudflare.com, liz.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for china-postdoc.com (unsigned zone)

⏱️ Timing

Total: 275ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.91.124, 172.67.218.252`
AAAA	2	`2606:4700:3031::ac43:dafc, 2606:4700:3036::6815:5b7c`
NS	2	`liz.ns.cloudflare.com, vern.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`liz.ns.cloudflare.com dns.cloudflare.com`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (vern.ns.cloudflare.com, vern.ns.cloudflare.com, vern.ns.cloudflare.com...)

Analysis

IP Addresses

china-postdoc.com resolves to four IPs: 2606:4700:3031::ac43:dafc, 2606:4700:3036::6815:5b7c, 104.21.91.124 and 172.67.218.252.

Other host names such as getfreeslots.com, battik.ru, pmc-nsk.ru, harcourt-normandie.fr and zahinzul.com share IP numbers with china-postdoc.com.

Name Servers

china-postdoc.com is delegated to two name servers: liz.ns.cloudflare.com and vern.ns.cloudflare.com.

china-postdoc.com uses the same name server setup as other domains, including taiwancareers.com, motelcamp.no, hobbykafe.com, opentrials.com and interivewweb.com.

At least part of the name servers for china-postdoc.com are shared with other domains, for instance allqanda.com, risingstargoldendoodles.com, kalangi.com, zoomold.com and n60106.com.

These name servers are commonly used with sri.ns.cloudflare.com, guy.ns.cloudflare.com, zahir.ns.cloudflare.com and leif.ns.cloudflare.com.

Host names with six IP numbers:

liz.ns.cloudflare.com points to: 2606:4700:50::adf5:3abd, 2803:f800:50::6ca2:c0bd, 2a06:98c1:50::ac40:20bd, 108.162.192.189, 172.64.32.189 and 173.245.58.189.

vern.ns.cloudflare.com points to: 2606:4700:58::adf5:3bf3, 2803:f800:50::6ca2:c1f3, 2a06:98c1:50::ac40:21f3, 108.162.193.243, 172.64.33.243 and 173.245.59.243.

china-postdoc.com - robtex.com