`hdztedu.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:c9f^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:c321^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.12.159^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.33^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`hattie.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26ac^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ac^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hattie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ac^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hattie.ns.cloudflare.com`
		A	108.162.194.172^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	162.159.38.172^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	172.64.34.172^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
NS	`jakub.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c55^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c355^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jakub.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2355^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jakub.ns.cloudflare.com`
		A	108.162.195.85^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	162.159.44.85^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
		A	172.64.35.85^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jakub.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.12.159, 172.67.195.33
		IPv6 hints	2606:4700:3034::6815:c9f, 2606:4700:3035::ac43:c321
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=77, name=cloudflare-ech.com
SOA	`hattie.ns.cloudflare.com`dns@cloudflare.com serial=2410885558

`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=1786320474

Same first word

hdztedu.com

DNS History

20 records (6 active, 14 former)

●NShattie.ns.cloudflare.com2026-05-08 → 2026-08-10 · 3 obs

○ 2017-07-01 15:46:04
● 2026-05-08 09:38:26
● 2026-08-10 00:21:30

●NSjakub.ns.cloudflare.com2026-05-08 → 2026-08-10 · 3 obs

○ 2017-07-01 15:46:04
● 2026-05-08 09:38:26
● 2026-08-10 00:21:30

○NSjuming.dnsdun.com2017-07-01 → 2017-07-01 · 4 obs

○ 2016-06-23 13:42:26
● 2017-07-01 15:46:04
○ 2026-05-08 09:38:26
○ 2026-08-10 00:21:30

○NSjuming.dnsdun.net2017-07-01 → 2017-07-01 · 4 obs

○ 2016-06-23 13:42:26
● 2017-07-01 15:46:04
○ 2026-05-08 09:38:26
○ 2026-08-10 00:21:30

○NSns1.cnspeed.com2015-11-24 → 2016-06-23 · 4 obs

● 2015-11-24 12:01:06
● 2016-06-23 13:42:26
○ 2017-07-01 15:46:04
○ 2026-08-10 00:21:30

○NSns2.cnspeed.com2015-11-24 → 2016-06-23 · 4 obs

● 2015-11-24 12:01:06
● 2016-06-23 13:42:26
○ 2017-07-01 15:46:04
○ 2026-08-10 00:21:30

●A104.21.12.1592026-06-15 → 2026-08-10 · 4 obs

○ 2026-05-17 03:50:02
● 2026-06-15 22:14:36
○ 2026-06-21 23:04:34
● 2026-08-10 00:21:30

○A172.252.25.1492017-07-01 → 2017-07-01 · 4 obs

○ 2016-06-23 13:42:26
● 2017-07-01 15:46:04
○ 2026-05-08 09:38:26
○ 2026-08-10 00:21:30

●A172.67.195.332026-06-15 → 2026-08-10 · 4 obs

○ 2026-05-17 03:50:02
● 2026-06-15 22:14:36
○ 2026-06-21 23:04:34
● 2026-08-10 00:21:30

○A176.113.70.1922026-05-08 → 2026-05-17 · 5 obs

○ 2017-07-01 15:46:04
● 2026-05-08 09:38:26
● 2026-05-17 03:50:02
○ 2026-06-15 22:14:36
○ 2026-08-10 00:21:30

○A188.114.96.02026-06-21 → 2026-06-21 · 4 obs

○ 2026-05-08 09:38:26
○ 2026-06-15 22:14:36
● 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

○A188.114.97.02026-06-21 → 2026-06-21 · 4 obs

○ 2026-05-08 09:38:26
○ 2026-06-15 22:14:36
● 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

○A218.85.134.62016-03-02 → 2016-06-23 · 5 obs

○ 2015-11-24 12:01:06
● 2016-03-02 12:03:14
● 2016-06-23 13:42:26
○ 2017-07-01 15:46:04
○ 2026-08-10 00:21:30

○A222.76.210.1182015-08-03 → 2015-11-24 · 4 obs

● 2015-08-03 04:30:06
● 2015-11-24 12:01:06
○ 2016-03-02 12:03:14
○ 2026-08-10 00:21:30

○A2606:4700:3032::6815:c9f2026-06-15 → 2026-06-15 · 4 obs

○ 2026-05-17 03:50:02
● 2026-06-15 22:14:36
○ 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

○A2606:4700:3033::ac43:c3212026-06-15 → 2026-06-15 · 4 obs

○ 2026-05-17 03:50:02
● 2026-06-15 22:14:36
○ 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

●A2606:4700:3034::6815:c9f2026-08-10 → 2026-08-10 · 2 obs

○ 2026-06-21 23:04:34
● 2026-08-10 00:21:30

●A2606:4700:3035::ac43:c3212026-08-10 → 2026-08-10 · 2 obs

○ 2026-06-21 23:04:34
● 2026-08-10 00:21:30

○A2a06:98c1:3120::2026-06-21 → 2026-06-21 · 4 obs

○ 2026-05-08 09:38:26
○ 2026-06-15 22:14:36
● 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

○A2a06:98c1:3121::2026-06-21 → 2026-06-21 · 4 obs

○ 2026-05-08 09:38:26
○ 2026-06-15 22:14:36
● 2026-06-21 23:04:34
○ 2026-08-10 00:21:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
hdztedu.com	hattie.ns.cloudflare.com, jakub.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.172

NS records: hattie.ns.cloudflare.com, jakub.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hdztedu.com (unsigned zone)

⏱️ Timing

Total: 247ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.12.159, 172.67.195.33`
AAAA	2	`2606:4700:3035::ac43:c321, 2606:4700:3034::6815:c9f`
NS	2	`hattie.ns.cloudflare.com, jakub.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`hattie.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

hdztedu.com points to the four IP addresses 104.21.12.159, 172.67.195.33, 2606:4700:3034::6815:c9f and 2606:4700:3035::ac43:c321.

Among the host names that share IP numbers with hdztedu.com are equiqo.com, booking-open-night.com, dobest.work and two others.

Name Servers

hdztedu.com is served by two delegated name servers, hattie.ns.cloudflare.com and jakub.ns.cloudflare.com.

hdztedu.com has the same name server delegation as a number of other domains, such as bainianruilinxiang.com, e5e10-66.com, baisenshiyan.com and two more.

At least some of hdztedu.com's name servers are shared with other domains, for example carpetcleaningorangenj.com, canchastack.digital, bitccm.com and two more.

These name servers tend to be used in conjunction with the name servers khalid.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

hattie.ns.cloudflare.com carries IP addresses 108.162.194.172, 162.159.38.172 and 172.64.34.172, with 3 other addresses beyond those.

jakub.ns.cloudflare.com carries IP addresses 108.162.195.85, 162.159.44.85 and 172.64.35.85, with 3 other addresses beyond those.

hdztedu.com - robtex.com

hdztedu.com

com

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`hdztedu.com`

`com`