dtubusiness.dk

📜 Historical scan 2026-07-25 07:50:29  ·  ← 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   46ms
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#

114ms
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 (164d)

🔗 Same registrant#

117 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)
alumniplus.dkPunktum dk A/S (direct)
arches2012.dkSimply.com A/S
biobrug.dkPunktum dk A/S (direct)
biogasupgrade.dkPunktum dk A/S (direct)
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)
ceinitiative.dkPunktum dk A/S (direct)
cemac.dkPunktum dk A/S (direct)
cert.dkPunktum dk A/S (direct)
chemsafe.dkPunktum dk A/S (direct)
chips-competence-centre.dkSimply.com A/S
computerome.dkPunktum dk A/S (direct)
cpcs.dkPunktum dk A/S (direct)
cphfuture.dkPunktum dk A/S (direct)
cvt.dkPunktum dk A/S (direct)
danish-universities.dkPROCOPA IT ApS
danske-universiteter.dkPROCOPA IT ApS
darenet.dkPunktum dk A/S (direct)
datasikkerhedsbladet.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)
difres.dkDANDOMAIN A/S
dig-e.dkPunktum dk A/S (direct)
dix.dkPunktum dk A/S (direct)
dk-cert.dkPunktum dk A/S (direct)
dkcert.dkPunktum dk A/S (direct)
dsri.dkPunktum dk A/S (direct)
dtb.dkPunktum dk A/S (direct)
dtu-alarm.dkSimply.com A/S
dtu.dkPunktum dk A/S (direct)
dtub.dkPunktum dk A/S (direct)
dtv.dkPunktum dk A/S (direct)
dunet.dkDanmarks Tekniske Universitet
eduroam.dkPunktum dk A/S (direct)
efsa.dkPunktum dk A/S (direct)
entrepreneurial.dkPunktum dk A/S (direct)
eurocc.dkPunktum dk A/S (direct)
executivemba.dkPunktum dk A/S (direct)
executivemmt.dkPunktum dk A/S (direct)
findit.dkPunktum dk A/S (direct)
fisker-forsker.dkDANDOMAIN A/S
fleksibelenergi.dkPunktum dk A/S (direct)
flexibleenergy.dkPunktum dk A/S (direct)
formalmethods.dkPunktum dk A/S (direct)
forskningsfronten.dkPunktum dk A/S (direct)
forskningsnet-cert.dkPunktum dk A/S (direct)
forskningsnet.dkPunktum dk A/S (direct)
forskningsnettet.dkPunktum dk A/S (direct)
forskningsportalen.dkPunktum dk A/S (direct)
fsknet.dkPunktum dk A/S (direct)
galathea3.dkPunktum dk A/S (direct)
gluckstad.dkPunktum dk A/S (direct)
havforskning.dkPunktum dk A/S (direct)
hawc2.dkPunktum dk A/S (direct)
hco2020.dkPunktum dk A/S (direct)
healthyoushare.dkPunktum dk A/S (direct)
hydrograv.dkPunktum dk A/S (direct)
i2.dkPunktum dk A/S (direct)
i4i.dkPunktum dk A/S (direct)
icert.dkPunktum dk A/S (direct)
incert.dkPunktum dk A/S (direct)
information4innovation.dkPunktum dk A/S (direct)
informationforinnovation.dkPunktum dk A/S (direct)
inka-project.dkPunktum dk A/S (direct)
intcert.dkPunktum dk A/S (direct)
intercert.dkPunktum dk A/S (direct)
it-sik.dkPunktum dk A/S (direct)
it-sikkerhedsbladet.dkPunktum dk A/S (direct)
komdigital.dkPunktum dk A/S (direct)
lira-project.dkPunktum dk A/S (direct)
metajournal.dkPunktum dk A/S (direct)
metajournals.dkPunktum dk A/S (direct)
microbexplore.dkPunktum dk A/S (direct)
microbxplore.dkPunktum dk A/S (direct)
microbxplorer.dkPunktum dk A/S (direct)
nanosystems.dkPunktum dk A/S (direct)
nordicnanolab.dkPunktum dk A/S (direct)
ocean-decade.dkDANDOMAIN A/S
oceandecade.dkDANDOMAIN A/S
open-entrepreneurship.dkPunktum dk A/S (direct)
openenergydata.dkPunktum dk A/S (direct)
polarview.dkPunktum dk A/S (direct)
postd.dkPunktum dk A/S (direct)
powerflexhouse.dkPunktum dk A/S (direct)
ppo.dkPunktum dk A/S (direct)
pse2015escape25.dkPunktum dk A/S (direct)
qim.dkPunktum dk A/S (direct)
quantumlab.dkPunktum dk A/S (direct)
rektor.dkPROCOPA IT ApS
route.dkPunktum dk A/S (direct)
sciencedata.dkPunktum dk A/S (direct)

Showing 100 of 117.

📋 WHOIS#

⏱️ Lookup Timing#

NS
46ms
A
46ms
MX
43ms
AAAA
49ms
TXT
346ms
CAA
50ms
HTTPS
41ms
TLSA
136ms
SOA
30ms
MTA-STS
61ms
DNSSEC
114ms
SRV
8060ms
Total
8666ms

🕐 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 shown 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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