1st-solution.de - dns.ninja

`1st-solution.de`

DNSSEC	⚠️ Not signed
A	213.203.223.198^{🇩🇪 PLUSSERVER-ASN1213.203.192.0/18 PlusServer GmbH Aggregate Duesseldorf}
NS	`ns.k1net.de` ⭐
		A	185.171.216.20^{🇩🇪 PLUSSERVER-ASN1185.171.216.0/24 K1 Internet Service - Hanno Kirchhoff}
			PTR	`ns.k1net.de`
NS	`ns.k1net.eu`
		A	185.171.217.20^{🇩🇪 PLUSSERVER-ASN1185.171.217.0/24 K1 Internet Service - Hanno Kirchhoff}
			PTR	`ns.k1net.eu`
NS	`ns.k1net.info`
		A	185.171.219.20^{🇩🇪 MYLOC-AS185.171.218.0/23 K1 Internet Service Hanno Kirchhoff}
			PTR	`ns.k1net.info`
NS	`ns.k1net.org`
		A	185.171.218.20^{🇩🇪 MYLOC-AS185.171.218.0/23 K1 Internet Service Hanno Kirchhoff}
			PTR	`ns.k1net.org`
MX	`1stsolution-de0i.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::4^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::4^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am0pr04cu00504.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::b^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::20^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00400.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.18^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db4pr02cu00302.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.16^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
TXT	`v=DMARC1; p=reject; fo=0:1:d:s; adkim=s; aspf=s; ruf=mailto:1stsolutionconsul...`
TXT	`MS=ms28647614`
TXT	`v=spf1 include:spf.k1net.de include:spf.eu.exclaimer.net include:spf-0071d301...`
TXT	`v=spf1 include:2cl1tkv5j.spf.checkpoint-spf.com ~all`
SOA	`ns.k1net.de`hostmaster@k1net.de 2026-07-14 #2

`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=1785434544

Same first word

1st-solution.de

1st-solution.jp

1st-solution.com

1st-solution.net

1st-solution.ai

DNS History

12 records (6 active, 6 former)

○NSns.hanno-kirchhoff.de2015-07-18 → 2017-04-06 · 4 obs

● 2015-07-18 22:13:06
● 2017-04-06 15:24:42
○ 2026-06-17 11:23:04
○ 2026-07-30 18:38:50

●NSns.k1net.de2015-07-18 → 2026-07-30 · 2 obs

● 2015-07-18 22:13:06
● 2026-07-30 18:38:50

●NSns.k1net.eu2015-07-18 → 2026-07-30 · 2 obs

● 2015-07-18 22:13:06
● 2026-07-30 18:38:50

●NSns.k1net.info2017-04-06 → 2026-07-30 · 3 obs

○ 2016-08-10 06:59:40
● 2017-04-06 15:24:42
● 2026-07-30 18:38:50

●NSns.k1net.org2017-04-06 → 2026-07-30 · 3 obs

○ 2016-08-10 06:59:40
● 2017-04-06 15:24:42
● 2026-07-30 18:38:50

○NSnsl3.k1net.de2015-07-18 → 2016-08-10 · 4 obs

● 2015-07-18 22:13:06
● 2016-08-10 06:59:40
○ 2017-04-06 15:24:42
○ 2026-07-30 18:38:50

●MX1stsolution-de0i.mail.protection.outlook.com2026-06-17 → 2026-07-30 · 3 obs

○ 2017-04-06 15:24:42
● 2026-06-17 11:23:04
● 2026-07-30 18:38:50

○MXsms02.1st-sc.de2015-07-18 → 2017-04-06 · 4 obs

● 2015-07-18 22:13:06
● 2017-04-06 15:24:42
○ 2026-06-17 11:23:04
○ 2026-07-30 18:38:50

○MXsms03.k1net.de2015-07-18 → 2017-04-06 · 4 obs

● 2015-07-18 22:13:06
● 2017-04-06 15:24:42
○ 2026-06-17 11:23:04
○ 2026-07-30 18:38:50

○MXsms04.k1net.de2015-07-18 → 2017-04-06 · 4 obs

● 2015-07-18 22:13:06
● 2017-04-06 15:24:42
○ 2026-06-17 11:23:04
○ 2026-07-30 18:38:50

●A213.203.223.1982015-12-03 → 2026-07-30 · 3 obs

○ 2015-07-18 22:13:06
● 2015-12-03 09:51:40
● 2026-07-30 18:38:50

○A87.119.201.2312015-07-18 → 2015-07-18 · 3 obs

● 2015-07-18 22:13:06
○ 2015-12-03 09:51:40
○ 2026-07-30 18:38:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	z.nic.de, a.nic.de, f.nic.de	-
1st-solution.de	ns.k1net.de, ns.k1net.eu, ns.k1net.org, ns.k1net.info	1 record

✅ Authoritative Response

Server:185.171.219.20

NS records: ns.k1net.de, ns.k1net.eu, ns.k1net.org, ns.k1net.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 1st-solution.de (unsigned zone)

⏱️ Timing

Total: 1585ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.203.223.198`
NS	4	`ns.k1net.org, ns.k1net.info...`
MX	1	`1stsolution-de0i.mail.protection.outlook`
TXT	4	`v=DMARC1; p=reject; fo=0:1:d:s; adkim=s;, MS=ms28647614...`
SOA	1	`ns.k1net.de hostmaster.k1net.de`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns.k1net.de)

Analysis

IP Addresses

1st-solution.de has exactly one IP address — 213.203.223.198.

Host names such as webman91.k1net.de and 1st-personal.de share IP numbers with 1st-solution.de.

Name Servers

Four name servers handle the delegation for 1st-solution.de: ns.k1net.de, ns.k1net.eu, ns.k1net.info and ns.k1net.org.

1st-solution.de shares at least some of its name servers with other domains, including ellgering-ruiling.de, giant-security.eu, system-invest.com and two others.

These name servers are frequently paired with the name servers ns.hanno-kirchhoff.de and nsl3.k1net.de.

Four host names, each with one IP address: ns.k1net.de has 185.171.216.20, ns.k1net.eu has 185.171.217.20, ns.k1net.info has 185.171.219.20 and ns.k1net.org has 185.171.218.20.

Mail Servers

1st-solution.de uses one mail server — 1stsolution-de0i.mail.protection.outlook.com.

1stsolution-de0i.mail.protection.outlook.com has 8 IP addresses: 52.101.68.8, 52.101.68.18, 52.101.73.15 plus 5 more.