mastering.dk

Records from scan: 2026-09-26 12:18:53  ·  2503ms total  ·  last checked 2026-10-16 08:11 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mastering.dk is a .dk domain served by 4 nameservers (ns.kleinweb.dk, ns2.kleinweb.dk, ns3.kleinweb.dk and 1 more). It was registered on 6 January 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.43.138.9 is hosted by Klein-Data (AS59979) in Denmark. Mail is handled by mailscan01.kleinweb.dk. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records   66ms
NameserverIP addressesPTRASN / ISP
ns.kleinweb.dk 195.43.138.53 ns.kleinweb.dk AS59979 Klein-Data
ns2.kleinweb.dk 195.43.138.16 ns2.kleinweb.dk AS59979 Klein-Data
ns3.kleinweb.dk 116.203.28.124
2a01:4f8:c2c:225d::53		 static.124.28.203.116.clients.your-server.de
—		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns4.kleinweb.dk 178.62.51.240
2a03:b0c0:1:d0::39:9001		 ns4.kleinweb.dk
ns4.kleinweb.dk		 AS14061 DigitalOcean, LLC
AS14061 DigitalOcean, LLC

🌍 A Records#

1 records   65ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.43.138.9 120s hweb.kleinweb.dk AS59979 Klein-Data 195.43.138.0/24 🇩🇰 Denmark —

📧 MX Records#

1 records   57ms
PriorityTTLMail ServerIP addressesPTRASN
5 120s mailscan01.kleinweb.dk 195.43.138.6 scan2.kleinweb.dk AS59979 Klein-Data

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   76ms
TXT Record
v=spf1 include:spf.kleinweb.dk ~all

✉️ SPF#

PolicyRecord (mastering.dk)
~all (soft fail) v=spf1 include:spf.kleinweb.dk ~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#

checked 2026-10-08 15:50:10
www195.43.138.9 (AS59979) (address records, no CNAME)
www vs bare domainSame network
mastering.dk: 195.43.138.9 (AS59979)
www.mastering.dk: 195.43.138.9 (AS59979)
WildcardNo

🔎 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#

198ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

24ms
FieldValue
Serial2020061406
Primary NS (MNAME)ns.kleinweb.dk
Responsible (RNAME)hostmaster@kleinweb.dk
Refresh7200s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)21600s

📋 Registration#

WHOIS fetched 2026-10-16 05:01:14
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2005-01-06
Expires2027-07-31 (287d)

🔗 Same registrant#

24 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).

DomainRegistrar
100mand.dkPunktum dk A/S (direct)
bedstemad.dkPunktum dk A/S (direct)
cafekultur.dkPunktum dk A/S (direct)
danskskolemad.dkPunktum dk A/S (direct)
elrune.dkPunktum dk A/S (direct)
frokost-butik.dkPunktum dk A/S (direct)
frokost-butikken.dkPunktum dk A/S (direct)
hvidesokker.dkPunktum dk A/S (direct)
institutionsmad.dkPunktum dk A/S (direct)
jersie.dkPunktum dk A/S (direct)
lydmand.dkPunktum dk A/S (direct)
madnet.dkPunktum dk A/S (direct)
midtmad.dkPunktum dk A/S (direct)
mubo.dkPunktum dk A/S (direct)
musikernet.dkPunktum dk A/S (direct)
net-systemet.dkPunktum dk A/S (direct)
se-by.dkPunktum dk A/S (direct)
skolecafeen.dkPunktum dk A/S (direct)
skolemadnet.dkPunktum dk A/S (direct)
slb-mad.dkPunktum dk A/S (direct)
spise-kammeret.dkPunktum dk A/S (direct)
tommyjo.dkPunktum dk A/S (direct)
tommyjohannessen.dkPunktum dk A/S (direct)
tuejohannessen.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
66ms
A
65ms
MX
57ms
AAAA
5ms
TXT
76ms
CAA
53ms
HTTPS
71ms
TLSA
348ms
SOA
24ms
MTA-STS
20ms
DNSSEC
198ms
SRV
0ms
Total
2503ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-26 12:18:53 shown 2503ms 4 NS 1 A 1 MX 🔓 Insecure
2026-06-17 14:41:44 1101ms 4 NS 1 A 1 MX 🔓 Insecure
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