opstreng.dk

📜 Historical scan 2026-06-18 00:38:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

opstreng.dk is a .dk domain served by 3 nameservers (ns.second-ns.com, ns1.your-server.de, ns3.second-ns.de). It was registered on 21 May 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.46.220.197 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by www577.your-server.de. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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#

3 records 81ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.second-ns.com	213.239.204.242 2a01:4f8:0:a101::b:1	ns.second-ns.com ns.second-ns.com	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns1.your-server.de	213.133.100.102 2a01:4f8:0:1::5ddc:1	ns1.your-server.de ns1.your-server.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns3.second-ns.de	193.47.99.4 2001:67c:192c::add:b3	ns3.second-ns.de ns3.second-ns.de	AS12337 noris network AG AS12337 noris network AG

🌍 A Records#

1 records 71ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
78.46.220.197	—	www577.your-server.de	AS24940	Hetzner Online GmbH	78.46.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records#

1 records 77ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	www577.your-server.de	2a01:4f8:d0a:43e4::2 78.46.220.197	www577.your-server.de www577.your-server.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔶 Autoconfig	mail.your-server.de → 78.46.5.205

🔷 AAAA Records (IPv6)#

1 records 81ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:d0a:43e4::2	—	www577.your-server.de	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 337ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	100	443	mail.your-server.de
_imaps._tcp	0	100	993	mail.your-server.de

📝 TXT Records#

1 records 271ms

TXT Record
v=spf1 a mx -all

✉️ SPF#

Policy	Record (opstreng.dk)
-all (hard fail)	v=spf1 a mx -all

📨 DMARC#

Policy	Record (_dmarc.opstreng.dk)
p=reject	v=DMARC1;p=reject;sp=none;pct=100;rua=mailto:reports@opstreng.dk;ruf=mailto:reports@opstreng.dk;adkim=r;aspf=r;

📬 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 2026-10-10 03:06:19

www	78.46.220.197 2a01:4f8:d0a:43e4::2 (AS24940) (address records, no CNAME)
www vs bare domain	Same network opstreng.dk: 78.46.220.197 2a01:4f8:d0a:43e4::2 (AS24940) www.opstreng.dk: 78.46.220.197 2a01:4f8:d0a:43e4::2 (AS24940)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

199ms

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

🏷️ SOA#

78ms

Field	Value
Serial	2026042900
Primary NS (MNAME)	ns1.your-server.de
Responsible (RNAME)	postmaster@your-server.de
Refresh	86400s
Retry	10800s
Expire	3600000s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-13 09:37:37

Field	Value
Registrar	CURANET A/S
Registered	2023-05-21
Expires	2027-05-20 (214d)

🔗 Same registrant#

6 domains

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
123ms.dk	CURANET A/S
30202012.dk	CURANET A/S
appservice.dk	CURANET A/S
nemkassesystem.dk	CURANET A/S
zendur.dk	CURANET A/S
zub.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

81ms

71ms

77ms

AAAA

81ms

TXT

271ms

CAA

77ms

HTTPS

70ms

TLSA

279ms

SOA

78ms

MTA-STS

92ms

DNSSEC

199ms

SRV

337ms

Total

1006ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-07-02 09:50:15	2525ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-26 04:25:31	1136ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-23 03:46:08	1170ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 00:38:15 shown	1006ms	3 NS 1 A 1 MX	🔓 Insecure