dtubusiness.dk

📜 Historical scan 2026-08-15 23:08:34  ·  ← 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   486ms
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#

670ms
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 (156d)

🔗 Same registrant#

275 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)
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)
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)
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)
europaeisk-aal.dkSimply.com A/S
europæisk-ål.dkSimply.com A/S
executivemba.dkPunktum dk A/S (direct)

Showing 100 of 275.

📋 WHOIS#

⏱️ Lookup Timing#

NS
486ms
A
488ms
MX
505ms
AAAA
496ms
TXT
1323ms
CAA
514ms
HTTPS
496ms
TLSA
266ms
SOA
328ms
MTA-STS
559ms
DNSSEC
670ms
SRV
517ms
Total
4652ms

🕐 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 shown 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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