`my-specialized-knowledge.com`

DNSSEC	⚠️ Not signed
A	2a05:d014:d44:9300:ff0b:1d20:6b08:1964^{🇩🇪 Amazon2a05:d014:c00::/38 AMAZON AWS}
A	52.58.204.140^{🇩🇪 Amazon52.58.0.0/15 EC2 FRA Prefix}
NS	`ns1-ipv6.netbuild.net` ⭐
		A	2a02:420:0:3::3^{🇩🇪 NETBUILD-AS2a02:420::/29 Net-Build GmbH Alfred-Nobel-Allee 38 66793 Saarwellingen Germany}
			PTR	`dns01-ipv6.nbgo.de`
NS	`ns1.netbuild.net`
		A	87.237.124.6^{🇩🇪 NETBUILD-AS87.237.120.0/21 Net-Build GmbH Alfred-Nobel-Allee 38 66793 Saarwellingen Germany}
			PTR	`ns1.netbuild.net`
NS	`ns2-ipv6.netbuild.net`
		A	2a02:420:0:5::3^{🇩🇪 NETBUILD-AS2a02:420::/29 Net-Build GmbH Alfred-Nobel-Allee 38 66793 Saarwellingen Germany}
			PTR	`dns02-ipv6.nbgo.de`
NS	`ns2.netbuild.net`
		A	87.237.127.6^{🇩🇪 NETBUILD-AS87.237.120.0/21 Net-Build GmbH Alfred-Nobel-Allee 38 66793 Saarwellingen Germany}
			PTR	`ns2.netbuild.net`
MX	`mail.my-specialized-knowledge.com` ⭐
		A	46.226.80.73^{🇩🇪 NETBUILD-AS46.226.80.0/21 Net-Build GmbH Alfred-Nobel-Allee 38 66793 Saarwellingen Germany}
			PTR	`nb2342.yas.netbuild.net`
SOA	`ns1.netbuild.net`support@netbuild.net 2026-03-30 #2

`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=1778568446

Same first word

my-specialized-knowledge.com

DNS History

10 records (7 active, 3 former)

●NSns1-ipv6.netbuild.net2026-02-21 → 2026-05-12 · 3 obs

○ 2017-03-25 21:25:22
● 2026-02-21 16:12:00
● 2026-05-12 07:05:28

●NSns1.netbuild.net2015-08-19 → 2026-05-12 · 2 obs

● 2015-08-19 06:39:54
● 2026-05-12 07:05:28

●NSns2-ipv6.netbuild.net2026-02-21 → 2026-05-12 · 3 obs

○ 2017-03-25 21:25:22
● 2026-02-21 16:12:00
● 2026-05-12 07:05:28

●NSns2.netbuild.net2015-08-19 → 2026-05-12 · 2 obs

● 2015-08-19 06:39:54
● 2026-05-12 07:05:28

○NSns3.netbuild.net2015-08-19 → 2017-03-25 · 4 obs

● 2015-08-19 06:39:54
● 2017-03-25 21:25:22
○ 2026-02-21 16:12:00
○ 2026-05-12 07:05:28

○NSns4.netbuild.net2015-08-19 → 2017-03-25 · 4 obs

● 2015-08-19 06:39:54
● 2017-03-25 21:25:22
○ 2026-02-21 16:12:00
○ 2026-05-12 07:05:28

●MXmail.my-specialized-knowledge.com2015-08-19 → 2026-05-12 · 2 obs

● 2015-08-19 06:39:54
● 2026-05-12 07:05:28

●A2a05:d014:d44:9300:ff0b:1d20:6b08:19642026-02-21 → 2026-05-12 · 3 obs

○ 2017-03-25 21:25:22
● 2026-02-21 16:12:00
● 2026-05-12 07:05:28

○A46.226.80.732015-08-19 → 2017-03-25 · 4 obs

● 2015-08-19 06:39:54
● 2017-03-25 21:25:22
○ 2026-02-21 16:12:00
○ 2026-05-12 07:05:28

●A52.58.204.1402026-02-21 → 2026-05-12 · 3 obs

○ 2017-03-25 21:25:22
● 2026-02-21 16:12:00
● 2026-05-12 07:05:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, l.gtld-servers.net, h.gtld-servers.net, c.gtld-servers.net...	-
my-specialized-knowledge.com	ns1.netbuild.net, ns2.netbuild.net, ns1-ipv6.netbuild.net, ns2-ipv6.netbuild.net	-

✅ Authoritative Response

Server:87.237.124.6

NS records: ns1.netbuild.net, ns2.netbuild.net, ns1-ipv6.netbuild.net, ns2-ipv6.netbuild.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for my-specialized-knowledge.com (unsigned zone)

⏱️ Timing

Total: 840ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`52.58.204.140`
AAAA	1	`2a05:d014:d44:9300:ff0b:1d20:6b08:1964`
NS	4	`ns2.netbuild.net, ns1.netbuild.net...`
MX	1	`mail.my-specialized-knowledge.com (pri:`
SOA	1	`ns1.netbuild.net support.netbuild.net`

Analysis

IP Addresses

my-specialized-knowledge.com resolves to two IP numbers: 2a05:d014:d44:9300:ff0b:1d20:6b08:1964 and 52.58.204.140.

Other host names, for instance ec2-52-58-204-140.eu-central-1.compute.amazonaws.com, www.meinfachwissen.de and meinfachwissen.de share IP numbers with my-specialized-knowledge.com.

Name Servers

my-specialized-knowledge.com is delegated to four name servers: ns1-ipv6.netbuild.net, ns1.netbuild.net, ns2-ipv6.netbuild.net and ns2.netbuild.net.

my-specialized-knowledge.com at least partially shares name servers with other domains, for instance tonkultur.com, 49.191.93.in-addr.arpa, 82.226.46.in-addr.arpa, 52.191.93.in-addr.arpa and academy24.ch.

These name servers are commonly used with the following name servers: ns3.netbuild.net, ns4.netbuild.net, ns1.net-server.de, ns1.net-build.net, ns2.net-server.de, ns1.net-build.de, ns2.net-build.de, ns2.net-build.net, ns3.net-build.net and ns4.net-build.net.

Host names with one IP number: ns1-ipv6.netbuild.net points to 2a02:420:0:3::3; ns1.netbuild.net points to 87.237.124.6; ns2-ipv6.netbuild.net points to 2a02:420:0:5::3; ns2.netbuild.net points to 87.237.127.6.

Mail Servers

my-specialized-knowledge.com is handled by a single mail server, mail.my-specialized-knowledge.com.

mail.my-specialized-knowledge.com resolves to IP 46.226.80.73.

my-specialized-knowledge.com - robtex.com