guehring.dk

📜 Historical scan 2026-06-17 10:38:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

guehring.dk is a .dk domain served by 5 nameservers (ns.gbc.gmbh, ns.gbc.green, ns.gbc.jetzt and 2 more). It was registered on 18 March 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.97.109.233 is hosted by GBC GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und Kommunikation (AS24766) in Germany. Mail is handled by guehring-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

5 records 80ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.gbc.gmbh	49.12.121.173	ns.gbc.gmbh	AS24940 Hetzner Online GmbH
ns.gbc.green	192.174.68.104 2001:67c:1bc::104	ns.inwx.de ns.inwx.ch	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns.gbc.jetzt	2a02:d500::53 45.87.158.53	c.xnameserver.de ns3.inwx.eu	AS48596 InterNetworX Management GmbH AS48596 InterNetworX Management GmbH
ns.gbc.red	176.97.158.104 2001:67c:10b8::104	ns2.inwx.com ns.domrobot.net	AS207021 ipcom GmbH AS1921 ipcom GmbH
ns.gbc.systems	212.97.96.154	ns.gbc.systems	AS24766 GBC GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und Kommunikation

🌍 A Records#

1 records 65ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.97.109.233	—	guehring02.gbc.systems	AS24766	GBC GmbH Internet Service Center Ingenieurgesellschaft fuer Systemsoftware und Kommunikation	212.97.96.0/19	🇩🇪 Germany	Haigerloch

📧 MX Records#

1 records 87ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	guehring-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::c 2a01:111:f403:ca09::c 2a01:111:f403:ca09::f 52.101.68.10 52.101.73.1 52.101.73.11 52.101.73.26	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 427ms

TXT Record
knowbe4-site-verification=9d0f4df6f13825cf34e369b1b9ed1921
v=spf1 ip4:212.97.109.201 ip4:212.97.96.157 ip4:194.6.208.114 ip4:194.6.209.235 ip4:194.6.209.236 ip6:2a00:f48:1008::208:114:10 ip6:2a00:f48:1008::209:235:10 ip6:2a00:f48:1008::209:236:10 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (guehring.dk)
-all (hard fail)	v=spf1 ip4:212.97.109.201 ip4:212.97.96.157 ip4:194.6.208.114 ip4:194.6.209.235 ip4:194.6.209.236 ip6:2a00:f48:1008::208:114:10 ip6:2a00:f48:1008::209:235:10 ip6:2a00:f48:1008::209:236:10 include:spf.protection.outlook.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 09:57:22

www CNAME	guehring.dk (all on guehring.dk) → 212.97.109.233 (AS24766)
www vs bare domain	Same network guehring.dk: 212.97.109.233 (AS24766) www.guehring.dk: 212.97.109.233 (AS24766)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

96ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

96ms

Field	Value
Serial	2025120404
Primary NS (MNAME)	ns.gbc.systems
Responsible (RNAME)	support@gbc.net
Refresh	3600s
Retry	900s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-12 00:37:43

Field	Value
Registrar	LEMARIT GmbH
Registered	2004-03-18
Expires	2027-03-31 (163d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
guhring.dk	LEMARIT GmbH

📋 WHOIS#

⏱️ Lookup Timing#

80ms

65ms

87ms

AAAA

339ms

TXT

427ms

CAA

60ms

HTTPS

79ms

TLSA

463ms

SOA

96ms

MTA-STS

249ms

DNSSEC

96ms

SRV

0ms

Total

1575ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:57:22	3063ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-24 05:59:40	2458ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-28 11:13:51	2462ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-26 16:35:54	8248ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-21 08:57:51	1477ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-17 10:38:58	1917ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-17 10:38:22 shown	1575ms	5 NS 1 A 1 MX	🔓 Insecure