koltermann.dk

📜 Historical scan 2026-08-10 13:40:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

koltermann.dk is a .dk domain served by 2 nameservers (ns1.variomedia.de, ns2.variomedia.de). It was registered on 20 July 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 81.28.228.43 is hosted by ScaleUp Technologies GmbH & Co. KG (AS29014) in Germany. Mail is handled by mail.variomedia.de. The zone is not DNSSEC-signed, publishes a 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#

2 records 241ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.variomedia.de	185.95.96.53 2a00:1c3e:96::53	ns1.variomedia.de ns1.variomedia.de	AS48519 Knipp Medien und Kommunikation GmbH AS48519 Knipp Medien und Kommunikation GmbH
ns2.variomedia.de	185.95.98.53 2a00:1c3e:98::53	ns2.variomedia.de ns2.variomedia.de	AS8561 Knipp Medien und Kommunikation GmbH AS48519 Knipp Medien und Kommunikation GmbH

🌍 A Records#

1 records 217ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
81.28.228.43	3600s	—	AS29014	ScaleUp Technologies GmbH & Co. KG	81.28.224.0/21	🇩🇪 Germany	—

📧 MX Records#

1 records 231ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.variomedia.de	81.28.224.26 81.28.224.27	mx1.mail.vrmd.de mx2.mail.vrmd.de	AS29014 ScaleUp Technologies GmbH & Co. KG AS29014 ScaleUp Technologies GmbH & Co. KG

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔶 Autoconfig	autoconfig.variomedia.de → 81.28.224.75

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 253ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	0	443	autodiscover.variomedia.de

📝 TXT Records#

1 records 462ms

TXT Record
v=spf1 include:spf.variomedia.de ?all

✉️ SPF#

Policy	Record (koltermann.dk)
?all (neutral)	v=spf1 include:spf.variomedia.de ?all

📨 DMARC#

Policy	Record (_dmarc.koltermann.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 21:33:58

www	81.28.228.43 (AS29014) (address records, no CNAME)
www vs bare domain	Same network koltermann.dk: 81.28.228.43 (AS29014) www.koltermann.dk: 81.28.228.43 (AS29014)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

304ms

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

🏷️ SOA#

0ms

Field	Value
Serial	1786328727
Primary NS (MNAME)	ns1.variomedia.de
Responsible (RNAME)	support@variomedia.de
Refresh	28800s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-09 22:06:51

Field	Value
Registrar	Variomedia AG
Registered	2004-07-20
Expires	2027-07-31 (283d)

📋 WHOIS#

⏱️ Lookup Timing#

241ms

217ms

231ms

AAAA

201ms

TXT

462ms

CAA

212ms

HTTPS

208ms

TLSA

134ms

SOA

0ms

MTA-STS

233ms

DNSSEC

304ms

SRV

253ms

Total

1462ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 21:33:58	1835ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-07 17:25:07	555ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-01 04:25:42	728ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 15:00:20	1060ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-01 20:41:47	10363ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-10 13:40:21 shown	1462ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 06:21:47	770ms	2 NS 1 A 1 MX	❓ Unknown
2026-06-20 19:46:27	1960ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-17 15:01:18	558ms	2 NS 1 A 1 MX	🔓 Insecure