`defensivecybersecurity.com`

DNSSEC	⚠️ Not signed
A	194.233.93.67^{🇸🇬 VTCDIGICOM-AS-VN194.233.93.67/32}
		PTR	`vmi2700979.contaboserver.net`
NS	`ns1.a2hosting.com` ⭐
		A	13.248.158.180^{🇺🇸 Amazon13.248.144.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns2.a2hosting.com`
		A	75.2.118.134^{🇺🇸 Amazon75.2.112.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
NS	`ns3.a2hosting.com`
		A	76.223.26.245^{🇺🇸 Amazon76.223.16.0/20}
			PTR	`a79764cc55c0ac9c0.awsglobalaccelerator.com`
NS	`ns4.a2hosting.com`
		A	99.83.147.209^{🇺🇸 Amazon99.83.144.0/20}
			PTR	`abc65dd9a44b5332f.awsglobalaccelerator.com`
MX	`mail.defensivecybersecurity.com` ⭐
		A	200.69.22.7^{🇦🇷 A2HOSTING200.69.20.0/22 A2 Hosting, Inc.}
			PTR	`sg1-cl9-its1.a2hosting.com`
TXT	`v=spf1 +a +mx +ip4:200.69.22.7 include:spf.a2hosting.com ~all`
SOA	`ns1.a2hosting.com`root@sg1-cl9-its1.a2hosting.com 2025-05-05 #3

`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=1774828997

Previously MX for

defensivecybersecurity.com

Subdomains

mail.defensivecybersecurity.com

Same first word

defensivecybersecurity.com

DNS History

13 records (6 active, 7 former)

●NSns1.a2hosting.com2026-03-17 → 2026-03-30 · 3 obs

○ 2016-09-20 20:00:08
● 2026-03-17 09:57:50
● 2026-03-30 00:22:20

●NSns2.a2hosting.com2026-03-17 → 2026-03-30 · 3 obs

○ 2016-09-20 20:00:08
● 2026-03-17 09:57:50
● 2026-03-30 00:22:20

●NSns3.a2hosting.com2016-09-20 → 2026-03-30 · 3 obs

○ 2016-04-03 01:14:52
● 2016-09-20 20:00:08
● 2026-03-30 00:22:20

●NSns4.a2hosting.com2016-09-20 → 2026-03-30 · 3 obs

○ 2016-04-03 01:14:52
● 2016-09-20 20:00:08
● 2026-03-30 00:22:20

○NSns65.domaincontrol.com2016-04-03 → 2016-04-03 · 3 obs

● 2016-04-03 01:14:52
○ 2016-09-20 20:00:08
○ 2026-03-30 00:22:20

○NSns66.domaincontrol.com2016-04-03 → 2016-04-03 · 3 obs

● 2016-04-03 01:14:52
○ 2016-09-20 20:00:08
○ 2026-03-30 00:22:20

○MXdefensivecybersecurity.com2016-09-20 → 2017-05-13 · 5 obs

○ 2016-04-03 01:14:52
● 2016-09-20 20:00:08
● 2017-05-13 07:41:56
○ 2026-03-17 09:57:50
○ 2026-03-30 00:22:20

●MXmail.defensivecybersecurity.com2026-03-17 → 2026-03-30 · 3 obs

○ 2017-05-13 07:41:56
● 2026-03-17 09:57:50
● 2026-03-30 00:22:20

○MXmailstore1.secureserver.net2016-04-03 → 2016-04-03 · 3 obs

● 2016-04-03 01:14:52
○ 2016-09-20 20:00:08
○ 2026-03-30 00:22:20

○MXsmtp.secureserver.net2016-04-03 → 2016-04-03 · 3 obs

● 2016-04-03 01:14:52
○ 2016-09-20 20:00:08
○ 2026-03-30 00:22:20

●A194.233.93.672026-03-17 → 2026-03-30 · 3 obs

○ 2017-05-13 07:41:56
● 2026-03-17 09:57:50
● 2026-03-30 00:22:20

○A50.63.202.392016-04-03 → 2016-04-03 · 3 obs

● 2016-04-03 01:14:52
○ 2016-09-20 20:00:08
○ 2026-03-30 00:22:20

○A66.198.251.1062016-09-20 → 2017-05-13 · 5 obs

○ 2016-04-03 01:14:52
● 2016-09-20 20:00:08
● 2017-05-13 07:41:56
○ 2026-03-17 09:57:50
○ 2026-03-30 00:22:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
defensivecybersecurity.com	ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com, ns4.a2hosting.com	4 records

✅ Authoritative Response

Server:99.83.147.209

NS records: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com, ns4.a2hosting.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for defensivecybersecurity.com (unsigned zone)

⏱️ Timing

Total: 136ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`194.233.93.67`
NS	4	`ns1.a2hosting.com, ns3.a2hosting.com...`
MX	1	`mail.defensivecybersecurity.com (pri: 0)`
TXT	1	`v=spf1 +a +mx +ip4:200.69.22.7 include:s`
SOA	1	`ns1.a2hosting.com root.sg1-cl9-its1.a2ho`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com...)

Analysis

Hierarchy

The parent of mail.defensivecybersecurity.com is defensivecybersecurity.com.

IP Addresses

defensivecybersecurity.com points to a single IP number: 194.233.93.67.

Other host names, for instance breinercnc.com, comedyquickies.com, australianmastertrust.com, deskini.com and c3ex.com share IP numbers with defensivecybersecurity.com.

Name Servers

defensivecybersecurity.com is delegated to four name servers: ns1.a2hosting.com, ns2.a2hosting.com, ns3.a2hosting.com and ns4.a2hosting.com.

defensivecybersecurity.com shares name servers with other domains at least partially, for instance power2inspire.org.uk, mypreownedstuff.com, periferiako.com, staceykent.com and macdart.com.

These name servers are commonly used with ns1.mysecurecloudhost.com, ns2.mysecurecloudhost.com, ns3.mysecurecloudhost.com and ns4.mysecurecloudhost.com.

Host names with a single IP:

ns1.a2hosting.com points to 13.248.158.180.

ns2.a2hosting.com points to 75.2.118.134.

ns3.a2hosting.com points to 76.223.26.245.

ns4.a2hosting.com points to 99.83.147.209.

Mail Servers

The mail server for defensivecybersecurity.com is mail.defensivecybersecurity.com.

Host name mail.defensivecybersecurity.com resolves to IP 200.69.22.7.

defensivecybersecurity.com - robtex.com