🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`developermastery.com`

DNSSEC	⚠️ Not signed
A	76.76.21.21^{🇺🇸 Amazon76.76.21.0/24 EC2 Prefix}
NS	`ns-cloud-b1.googledomains.com` ⭐
		A	2001:4860:4802:32::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b1.googledomains.com`
		A	216.239.32.107^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-b1.googledomains.com`
NS	`ns-cloud-b2.googledomains.com`
		A	2001:4860:4802:34::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b2.googledomains.com`
		A	216.239.34.107^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-b2.googledomains.com`
NS	`ns-cloud-b3.googledomains.com`
		A	2001:4860:4802:36::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b3.googledomains.com`
		A	216.239.36.107^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-b3.googledomains.com`
NS	`ns-cloud-b4.googledomains.com`
		A	2001:4860:4802:38::6b^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-b4.googledomains.com`
		A	216.239.38.107^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-b4.googledomains.com`
MX	`mx2.zoho.com` ⭐
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽⁵⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx6.zoho.com`
			PTR	`mx7.zoho.com`
			PTR	`mx8.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`v=spf1 include:zoho.com ~all`
SOA	`ns-cloud-b1.googledomains.com`cloud-dns-hostmaster@google.com serial=5

`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=1787657311

Same first word

developermastery.com

Previous names

Next names

DNS History

12 records (8 active, 4 former)

●NSns-cloud-b1.googledomains.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

●NSns-cloud-b2.googledomains.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

●NSns-cloud-b3.googledomains.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

●NSns-cloud-b4.googledomains.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

○NSwns2273.hostgator.com2019-12-17 → 2019-12-17 · 3 obs

● 2019-12-17 15:40:56
○ 2026-08-21 11:29:08
○ 2026-08-25 11:43:16

○NSwns2274.hostgator.com2019-12-17 → 2019-12-17 · 3 obs

● 2019-12-17 15:40:56
○ 2026-08-21 11:29:08
○ 2026-08-25 11:43:16

○MXmail.developermastery.com2019-12-17 → 2019-12-17 · 3 obs

● 2019-12-17 15:40:56
○ 2026-08-21 11:29:08
○ 2026-08-25 11:43:16

●MXmx.zoho.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

●MXmx2.zoho.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

●MXmx3.zoho.com2026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

○A50.116.93.1562019-12-17 → 2019-12-17 · 3 obs

● 2019-12-17 15:40:56
○ 2026-08-21 11:29:08
○ 2026-08-25 11:43:16

●A76.76.21.212026-08-21 → 2026-08-25 · 3 obs

○ 2019-12-17 15:40:56
● 2026-08-21 11:29:08
● 2026-08-25 11:43:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
developermastery.com	ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com	8 records

✅ Authoritative Response

Server:216.239.34.107

NS records: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com, ns-cloud-b4.googledomains.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 594ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`76.76.21.21`
NS	4	`ns-cloud-b2.googledomains.com, ns-cloud-b4.googledomains.com...`
MX	3	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 50)...`
TXT	1	`v=spf1 include:zoho.com ~all`
SOA	1	`ns-cloud-b1.googledomains.com cloud-dns-`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns-cloud-b1.googledomains.com, ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com...)

Analysis

IP Addresses

developermastery.com has exactly one IP address — 76.76.21.21.

arielfavaro.com.br, topflop.fr, milanochinas.se plus two other host names have IP numbers in common with developermastery.com.

Name Servers

Four name servers handle the delegation for developermastery.com: ns-cloud-b1.googledomains.com, ns-cloud-b2.googledomains.com, ns-cloud-b3.googledomains.com and ns-cloud-b4.googledomains.com.

At least some of developermastery.com's name servers are shared with other domains, for example sosfollowers.fr, thebabesruth.com, goswiftbunnygo.com and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-cloud-b1.googledomains.com directs to 216.239.32.107 and 2001:4860:4802:32::6b; ns-cloud-b2.googledomains.com directs to 216.239.34.107 and 2001:4860:4802:34::6b; ns-cloud-b3.googledomains.com directs to 216.239.36.107 and 2001:4860:4802:36::6b; ns-cloud-b4.googledomains.com directs to 216.239.38.107 and 2001:4860:4802:38::6b.

Mail Servers

The MX records for developermastery.com list three mail servers: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

At least some of the mail servers used by developermastery.com are shared with other domains: albabeauty.co.ke, mirrorlens.app, aneenpantry.com and two others among them.

Each of mx2.zoho.com, mx3.zoho.com and mx.zoho.com has one IP address, which is 204.141.43.44.

Three host names point to 204.141.43.44: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.

developermastery.com - robtex.com