dtubusiness.dk

📜 Historical scan 2026-07-12 05:34:20  ·  ← Latest scan
🧟 Lame delegation ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dtubusiness.dk is a registered .dk domain whose nameservers (ns01.one.com, ns02.one.com) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 16 March 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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   78ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S

🌍 A Records#

🌍
No A records found

📧 MX Records#

📧
No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝
No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

139ms
CheckResult
Validation Status⚠️ Bogus — the parent still publishes a DS record, but the delegated nameservers don't answer, so no signed answer can be fetched. The zone isn't serving broken signatures; it isn't serving at all.
AD Flag (resolver validates)✗ Not set
DS Record✓ Found
DNSKEY Record✗ Not found
Flagsresolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-11 15:51:12
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2012-03-16
Expires2027-03-31 (154d)

🔗 Same registrant#

284 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
3g-center.dkSimply.com A/S
4m-centre.dkSimply.com A/S
abyss.dkSimply.com A/S
accuwind.dkPunktum dk A/S (direct)
altimetry.dkPunktum dk A/S (direct)
alumniplus.dkPunktum dk A/S (direct)
antibiotikaresistens.dkPunktum dk A/S (direct)
antibody.dkDANDOMAIN A/S
arches2012.dkSimply.com A/S
aribah.dkPunktum dk A/S (direct)
bear-hearing.dkSimply.com A/S
bigq.dkSimply.com A/S
bigscience.dkWEB SOLUTIONS A/S
biobrug.dkPunktum dk A/S (direct)
biogasupgrade.dkPunktum dk A/S (direct)
biosensor.dkPunktum dk A/S (direct)
biotechacademy.dkPunktum dk A/S (direct)
boernenesuniversitet.dkSimply.com A/S
bonus-optimus.dkPunktum dk A/S (direct)
borger-cert.dkPunktum dk A/S (direct)
bridgingthegap.dkSimply.com A/S
børnenesuniversitet.dkPunktum dk A/S (direct)
carbospot.dkPunktum dk A/S (direct)
ccht.dkPunktum dk A/S (direct)
ce-readiness.dkPunktum dk A/S (direct)
ceinitiative.dkPunktum dk A/S (direct)
cemac.dkPunktum dk A/S (direct)
cert.dkPunktum dk A/S (direct)
cewqo2017.dkSimply.com A/S
chemsafe.dkPunktum dk A/S (direct)
chips-competence-centre.dkSimply.com A/S
cifq.dkPunktum dk A/S (direct)
coherent-project.dkPunktum dk A/S (direct)
computerome.dkPunktum dk A/S (direct)
comstat.dkPunktum dk A/S (direct)
covidtest.dkPunktum dk A/S (direct)
cpcs.dkPunktum dk A/S (direct)
cph-food.dkPunktum dk A/S (direct)
cphfuture.dkPunktum dk A/S (direct)
cvt.dkPunktum dk A/S (direct)
d-t-you.dkPunktum dk A/S (direct)
da-gate.dkPunktum dk A/S (direct)
dacin.dkPunktum dk A/S (direct)
danchip.dkPunktum dk A/S (direct)
danida-gecko.dkPunktum dk A/S (direct)
danish-universities.dkPROCOPA IT ApS
danishdays.dkPunktum dk A/S (direct)
danishuniversities.dkPROCOPA IT ApS
danscatt.dkSimply.com A/S
danske-universiteter.dkPROCOPA IT ApS
danskeuniversiteter.dkPROCOPA IT ApS
darenet.dkPunktum dk A/S (direct)
datasikkerhedsbladet.dkPunktum dk A/S (direct)
dccsm.dkPunktum dk A/S (direct)
dcf-denmark.dkPunktum dk A/S (direct)
dcrs.dkPunktum dk A/S (direct)
deic.dkPunktum dk A/S (direct)
derisk.dkPunktum dk A/S (direct)
detrigtigelaboratorium.dkPunktum dk A/S (direct)
dffv.dkPunktum dk A/S (direct)
difres.dkDANDOMAIN A/S
dig-e.dkPunktum dk A/S (direct)
digitalenergy.dkPunktum dk A/S (direct)
digitalenergylab.dkPunktum dk A/S (direct)
dix.dkPunktum dk A/S (direct)
dk-cert.dkPunktum dk A/S (direct)
dk-healthcareinnovation.dkPunktum dk A/S (direct)
dkcert.dkPunktum dk A/S (direct)
dnsc.dkPunktum dk A/S (direct)
doll-labs.dkPunktum dk A/S (direct)
dronevideotech.dkPunktum dk A/S (direct)
dsagm.dkPunktum dk A/S (direct)
dsri.dkPunktum dk A/S (direct)
dtb.dkPunktum dk A/S (direct)
dtf.dkPunktum dk A/S (direct)
dtic.dkPunktum dk A/S (direct)
dtu-alarm.dkSimply.com A/S
dtu.dkPunktum dk A/S (direct)
dtub.dkPunktum dk A/S (direct)
dtusat.dkPunktum dk A/S (direct)
dtutest.dkPunktum dk A/S (direct)
dtv.dkPunktum dk A/S (direct)
dunet.dkDanmarks Tekniske Universitet
duraledge.dkPunktum dk A/S (direct)
e-universitet.dkPunktum dk A/S (direct)
eduhub.dkDANDOMAIN A/S
eduroam.dkPunktum dk A/S (direct)
eel-hatch.dkPunktum dk A/S (direct)
efsa.dkPunktum dk A/S (direct)
elchemea.dkPunktum dk A/S (direct)
energipaalager.dkPunktum dk A/S (direct)
energydata.dkPunktum dk A/S (direct)
energyinnovationhub.dkPunktum dk A/S (direct)
energylivelab.dkPunktum dk A/S (direct)
entrepreneurial.dkPunktum dk A/S (direct)
erc-electrothermo.dkPunktum dk A/S (direct)
esa-bic.dkPunktum dk A/S (direct)
esabic.dkPunktum dk A/S (direct)
euniversitet.dkPunktum dk A/S (direct)
eurocc.dkPunktum dk A/S (direct)

Showing 100 of 284.

📋 WHOIS#

⏱️ Lookup Timing#

NS
78ms
A
47ms
MX
67ms
AAAA
56ms
TXT
276ms
CAA
66ms
HTTPS
62ms
TLSA
36ms
SOA
84ms
MTA-STS
215ms
DNSSEC
139ms
SRV
174ms
Total
781ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-09-30 20:38:05 1517ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-09-16 02:27:41 51295ms 2 NS 0 A 0 MX ❓ Unknown
2026-08-28 02:42:05 2936ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-23 13:33:23 10100ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-22 12:25:43 10054ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-21 12:08:19 1332ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-20 11:53:40 3031ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-19 05:22:53 10174ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-18 04:32:40 3400ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-16 23:19:39 4463ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-15 23:08:34 4652ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-14 20:39:51 966ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-13 17:15:17 1010ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-12 03:53:33 885ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-10 16:36:18 2627ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-09 02:07:43 16857ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-08-03 04:56:40 986ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-28 16:24:34 2842ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-27 08:36:23 16775ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-26 07:56:36 870ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-25 07:50:29 8666ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-24 06:30:34 16678ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-23 06:11:48 774ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-21 23:21:57 705ms 2 NS 0 A 0 MX ⚠️ Bogus
2026-07-20 17:02:38 27164ms 2 NS 0 A 0 MX ❓ Unknown
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