`sylvesterklein.de`

DNSSEC	⚠️ Not signed
A	2a01:4f8:d0a:1247::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`www272.your-server.de`
A	188.40.28.172^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
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.sylvesterklein.de` ⭐
		A	2a01:4f8:d0a:1247::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`www272.your-server.de`
		A	188.40.28.172^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
			PTR	`www272.your-server.de`
TXT	`v=spf1 +a +mx ?all`
SOA	`ns1.your-server.de`postmaster@your-server.de 2026-01-08 #0

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1778605397

Subdomains

mail.sylvesterklein.de

Same first word

sylvesterklein.de

DNS History

12 records (6 active, 6 former)

●NSns.second-ns.com2020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

●NSns1.your-server.de2020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

○NSns25.schlund.de2015-07-06 → 2017-02-16 · 4 obs

● 2015-07-06 12:29:42
● 2017-02-16 17:21:58
○ 2020-01-21 15:50:14
○ 2026-05-12 17:07:20

○NSns26.schlund.de2015-07-06 → 2017-02-16 · 4 obs

● 2015-07-06 12:29:42
● 2017-02-16 17:21:58
○ 2020-01-21 15:50:14
○ 2026-05-12 17:07:20

●NSns3.second-ns.de2020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

●MXmail.sylvesterklein.de2020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

○MXmx00.schlund.de2015-07-06 → 2017-02-16 · 4 obs

● 2015-07-06 12:29:42
● 2017-02-16 17:21:58
○ 2020-01-21 15:50:14
○ 2026-05-12 17:07:20

○MXmx01.schlund.de2015-07-06 → 2017-02-16 · 4 obs

● 2015-07-06 12:29:42
● 2017-02-16 17:21:58
○ 2020-01-21 15:50:14
○ 2026-05-12 17:07:20

●A188.40.28.1722020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

○A217.160.223.42016-06-19 → 2017-02-16 · 5 obs

○ 2016-02-22 14:10:02
● 2016-06-19 15:46:30
● 2017-02-16 17:21:58
○ 2020-01-21 15:50:14
○ 2026-05-12 17:07:20

●A2a01:4f8:d0a:1247::22020-01-21 → 2026-05-12 · 3 obs

○ 2017-02-16 17:21:58
● 2020-01-21 15:50:14
● 2026-05-12 17:07:20

○A82.165.116.482015-07-06 → 2016-02-22 · 4 obs

● 2015-07-06 12:29:42
● 2016-02-22 14:10:02
○ 2016-06-19 15:46:30
○ 2026-05-12 17:07:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	f.nic.de, z.nic.de, a.nic.de	-
sylvesterklein.de	ns.second-ns.com, ns1.your-server.de, ns3.second-ns.de	4 records

✅ Authoritative Response

Server:213.133.100.102

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sylvesterklein.de (unsigned zone)

⏱️ Timing

Total: 719ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`188.40.28.172`
AAAA	1	`2a01:4f8:d0a:1247::2`
NS	3	`ns.second-ns.com, ns1.your-server.de...`
MX	1	`mail.sylvesterklein.de (pri: 10)`
TXT	1	`v=spf1 +a +mx ?all`
SOA	1	`ns1.your-server.de postmaster.your-serve`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.your-server.de, ns1.your-server.de, ns3.second-ns.de...)

Analysis

Hierarchy

The parent of mail.sylvesterklein.de is sylvesterklein.de.

IP Addresses

sylvesterklein.de resolves to two IP numbers: 2a01:4f8:d0a:1247::2 and 188.40.28.172.

Other host names, for instance internate-vereinigung.de, mail.heidelberg-catering-services.com, softkeycenter.com, mail.internate-vereinigung.de and ulrich-reuter.de share IP numbers with sylvesterklein.de.

Name Servers

sylvesterklein.de is delegated to three name servers: ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de.

sylvesterklein.de partially shares name servers with other domains; examples include johannesfreyer.de, b.9.3.2.0.9.1.2.8.f.4.0.1.0.a.2.ip6.arpa, 190.156.178.clients.your-server.de, littleaesthete.com and birte-schaller.de.

Host names with two IP numbers:

ns.second-ns.com points to 2a01:4f8:0:a101::b:1 and 213.239.204.242.

ns3.second-ns.de points to 2001:67c:192c::add:b3 and 193.47.99.4.

ns1.your-server.de points to 2a01:4f8:0:1::5ddc:1 and 213.133.100.102.

Mail Servers

sylvesterklein.de is handled by a single mail server, mail.sylvesterklein.de.

Host mail.sylvesterklein.de resolves to two IPs: 2a01:4f8:d0a:1247::2 and 188.40.28.172.

sylvesterklein.de - robtex.com