🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`certdeck.study`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:c395^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::6815:31eb^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.49.235^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.195.149^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`elias.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c1d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elias.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c31d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elias.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:231d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elias.ns.cloudflare.com`
		A	108.162.195.29^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elias.ns.cloudflare.com`
		A	162.159.44.29^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elias.ns.cloudflare.com`
		A	172.64.35.29^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elias.ns.cloudflare.com`
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`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁴¹⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽⁶⁸⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.49.235, 172.67.195.149
		IPv6 hints	2606:4700:3033::ac43:c395, 2606:4700:3035::6815:31eb
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=87, name=cloudflare-ech.com
SOA	`elias.ns.cloudflare.com`dns@cloudflare.com serial=2412687804

`study`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.study` ⭐
	NS	`b.nic.study`
	NS	`c.nic.study`
	NS	`x.nic.study`
	NS	`y.nic.study`
	NS	`z.nic.study`
	SOA	`a.nic.study`admin@tldns.godaddy serial=1788603129

Same first word

certdeck.app

certdeck.study

certdeck.dev

Similar names

deckerct.com

cdeckert.com

Previous names

Next names

DNS History

9 records (9 active, 0 former)

●NSelias.ns.cloudflare.com2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●NShattie.ns.cloudflare.com2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●MXroute1.mx.cloudflare.net2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●MXroute2.mx.cloudflare.net2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●MXroute3.mx.cloudflare.net2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●A104.21.49.2352026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●A172.67.195.1492026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●A2606:4700:3033::ac43:c3952026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

●A2606:4700:3035::6815:31eb2026-08-28 → 2026-09-05 · 2 obs

● 2026-08-28 20:14:32
● 2026-09-05 11:23:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
study	a.nic.study, b.nic.study, c.nic.study, x.nic.study...	12 records
certdeck.study	elias.ns.cloudflare.com, hattie.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.29

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certdeck.study (unsigned zone)

⏱️ Timing

Total: 1192ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.195.149, 104.21.49.235`
AAAA	2	`2606:4700:3033::ac43:c395, 2606:4700:3035::6815:31eb`
NS	2	`elias.ns.cloudflare.com, hattie.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 10), route3.mx.cloudflare.net (pri: 41)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`elias.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.study, a.nic.study, b.nic.study...)

Analysis

IP Addresses

certdeck.study points to the four IP addresses 104.21.49.235, 172.67.195.149, 2606:4700:3033::ac43:c395 and 2606:4700:3035::6815:31eb.

s5821.cn, decage.lat, reviewdatacheck.com plus two other host names have IP numbers in common with certdeck.study.

Name Servers

certdeck.study uses two name servers for its delegation: elias.ns.cloudflare.com and hattie.ns.cloudflare.com.

The name server configuration of certdeck.study is shared with other domains, for instance moeskyzone.com, young-dust-089b.workers.dev, rep11lanet.com and two others.

At least some of certdeck.study's name servers are shared with other domains, for example u7401.pages.dev, bruthans.eu, kuaibospw.cc and two more.

These name servers tend to appear together with the name servers khalid.ns.cloudflare.com, jakub.ns.cloudflare.com and priscilla.ns.cloudflare.com, plus two others.

Hosts with 6 IP addresses each:

Hostname elias.ns.cloudflare.com directs to 108.162.195.29, 162.159.44.29 and 172.64.35.29 along with 3 other IP addresses.

Hostname hattie.ns.cloudflare.com directs to 108.162.194.172, 162.159.38.172 and 172.64.34.172 along with 3 other IP addresses.

Mail Servers

The MX records for certdeck.study list three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

At least some of the mail servers used by certdeck.study are shared with other domains: juraespressomachines.com, rochelletina.shop, imgerp.eu and two others among them.

Hosts with 6 IP addresses each:

Hostname route1.mx.cloudflare.net directs to 162.159.205.11, 162.159.205.12 and 162.159.205.13 along with 3 other IP addresses.

Hostname route2.mx.cloudflare.net directs to 162.159.205.17, 162.159.205.18 and 162.159.205.19 along with 3 other IP addresses.

Hostname route3.mx.cloudflare.net directs to 162.159.205.23, 162.159.205.24 and 162.159.205.25 along with 3 other IP addresses.

certdeck.study - robtex.com

certdeck.study

study

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`certdeck.study`

`study`