explainacademy.com - dns.ninja

`explainacademy.com`

DNSSEC	⚠️ Not signed
A	213.133.104.4^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
		PTR	`www4.your-server.de`
NS	`ns1.your-server.de` ⭐
		A	2a01:4f8:0:1::5ddc:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns1.your-server.de`
		A	213.133.100.102^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`ns1.your-server.de`
NS	`ns.second-ns.com`
		A	2a01:4f8:0:a101::b:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns.second-ns.com`
		A	213.239.204.242^{🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2}
			PTR	`ns.second-ns.com`
NS	`ns3.second-ns.de`
		A	2001:67c:192c::add:b3^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`ns3.second-ns.de`
		A	193.47.99.4^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`ns3.second-ns.de`
MX	`mail.explainacademy.com` ⭐
		A	213.133.104.4^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`www4.your-server.de`
TXT	`v=spf1 +a +mx ?all`
SOA	`ns1.your-server.de`postmaster@your-server.de 2025-12-11 #0

`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=1783916707

Subdomains

mail.explainacademy.com

Same first word

explainacademy.com

DNS History

5 records (5 active, 0 former)

●NSns.second-ns.com2017-02-08 → 2026-07-13 · 2 obs

● 2017-02-08 16:59:32
● 2026-07-13 04:39:04

●NSns1.your-server.de2017-02-08 → 2026-07-13 · 2 obs

● 2017-02-08 16:59:32
● 2026-07-13 04:39:04

●NSns3.second-ns.de2017-02-08 → 2026-07-13 · 2 obs

● 2017-02-08 16:59:32
● 2026-07-13 04:39:04

●MXmail.explainacademy.com2017-02-08 → 2026-07-13 · 2 obs

● 2017-02-08 16:59:32
● 2026-07-13 04:39:04

●A213.133.104.42017-02-08 → 2026-07-13 · 2 obs

● 2017-02-08 16:59:32
● 2026-07-13 04:39:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
explainacademy.com	ns1.your-server.de, ns.second-ns.com, ns3.second-ns.de	2 records

✅ Authoritative Response

Server:213.239.204.242

NS records: ns1.your-server.de, ns.second-ns.com, ns3.second-ns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for explainacademy.com (unsigned zone)

⏱️ Timing

Total: 249ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.133.104.4`
NS	3	`ns3.second-ns.de, ns.second-ns.com...`
MX	1	`mail.explainacademy.com (pri: 10)`
TXT	1	`v=spf1 +a +mx ?all`
SOA	1	`ns1.your-server.de postmaster.your-serve`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns.second-ns.com, ns.second-ns.com)

Analysis

Hierarchy

The domain mail.explainacademy.com falls under the parent explainacademy.com.

IP Addresses

explainacademy.com resolves to one IP address: 213.133.104.4.

deframe.net, playbacks24.de, urlaub-in-deutschland.de and two other host names share IP numbers with explainacademy.com.

Name Servers

Three name servers are authoritative for explainacademy.com: ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de.

At least some of explainacademy.com's name servers are shared with other domains, for example cm7.eu, bolsos.net, e.6.d.a.c.0.c.0.8.f.4.0.1.0.a.2.ip6.arpa and two more.

ns.second-ns.com resolves to 213.239.204.242 and 2a01:4f8:0:a101::b:1. ns3.second-ns.de resolves to 193.47.99.4 and 2001:67c:192c::add:b3. ns1.your-server.de resolves to 213.133.100.102 and 2a01:4f8:0:1::5ddc:1. All three hostnames point to two IP numbers each.

Mail Servers

Mail for explainacademy.com is handled by a single mail server, mail.explainacademy.com.

There is one IP number for mail.explainacademy.com: 213.133.104.4.