nfsn.dk

Records from scan: 2026-10-10 22:15:49  ·  1068ms total  ·  last checked 2026-10-21 08:03 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nfsn.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 27 October 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 192.38.84.61 is hosted by IDDQD-AS (AS1835) in Denmark. Mail is handled by mx1.spamfilter.cc, mx2.spamfilter.cc and 1 more. The zone is DNSSEC-signed and validates, publishes a 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#

2 records   106ms
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#

1 records   137ms
IPTTLPTRASNISP / OrgCIDRCountryCity
192.38.84.61 43200s rodeo.windenergy.dtu.dk AS1835 IDDQD-AS 192.38.0.0/17 🇩🇰 Denmark Kongens Lyngby

📧 MX Records#

3 records   121ms
PriorityTTLMail ServerIP addressesPTRASN
10 43200s mx1.spamfilter.cc 2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5
95.179.139.219
95.179.218.56		 —
95.179.139.219.vultrusercontent.com
95.179.218.56.vultrusercontent.com		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
10 43200s mx2.spamfilter.cc 2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5
95.179.139.219
95.179.218.56		 —
95.179.139.219.vultrusercontent.com
95.179.218.56.vultrusercontent.com		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
20 43200s mx3.spamfilter.cc 2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5
95.179.139.219
95.179.218.56		 —
95.179.139.219.vultrusercontent.com
95.179.218.56.vultrusercontent.com		 AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC
AS20473 The Constant Company, LLC

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscovernfsn.dk → 192.38.84.61
🔶 Autoconfignfsn.dk → 192.38.84.61

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

5 records   244ms
TXT Record
3QGFii0svYWIqd87YSBipqGHwqWsHl73t9bjFcvC5COEM2Ad5PIyfgpgu1xrRrfQtJEnXn6ENZK0k2+V32aQOw==
HARICA-LdMSTBSI70X0s1Gq1ex
v=spf1 mx -all
xz1qtmcgbkszb3j266prc3g9gnk9tvzf
yL+apEmP3ObwBRZYsTk8dhNk0jgZD0+X8yvShKimhKbL+N8sABWajq0Q2k/jfRVJsdK8yJ5DDHm9FPZKVEMCrA==

✉️ SPF#

PolicyRecord (nfsn.dk)
-all (hard fail) v=spf1 mx -all

📨 DMARC#

PolicyRecord (_dmarc.nfsn.dk)
p=quarantine v=DMARC1; p=quarantine; pct=100;

📬 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 2026-10-10 22:15:49
www CNAMEsan1.sitecore.dtu.dk (all on dtu.dk)
www vs bare domainDifferent networks
nfsn.dk: 192.38.84.61 (AS1835)
www.nfsn.dk: 52.236.166.178 (AS8075)
(all like this)
WildcardYes: any name under the zone resolves
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.nfsn.dk nfsn.dk
TXT nfsn.dk xz1qtmcgbkszb3j266prc3g9gnk9tvzf

🔗 TLSA / DANE#

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

🔐 DNSSEC#

196ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

93ms
FieldValue
Serial2026101001
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s

📋 Registration#

WHOIS fetched 2026-10-19 19:41:08
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2020-10-27
Expires2027-10-31 (375d)

🔗 Same registrant#

205 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)
antibiotikaresistens.dkPunktum dk A/S (direct)
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)
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)
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)
danish-universities.dkPROCOPA IT ApS
danishdays.dkPunktum dk A/S (direct)
danishuniversities.dkPROCOPA IT ApS
danske-universiteter.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)
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)
dkcert.dkPunktum dk A/S (direct)
dnsc.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)
dtu-alarm.dkSimply.com A/S
dtu.dkPunktum dk A/S (direct)
dtub.dkPunktum dk A/S (direct)
dtubusiness.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)
eduroam.dkPunktum dk A/S (direct)
efsa.dkPunktum dk A/S (direct)
elchemea.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)
esabic.dkPunktum dk A/S (direct)
eurocc.dkPunktum dk A/S (direct)
executivemba.dkPunktum dk A/S (direct)
executivemmt.dkPunktum dk A/S (direct)
fast-track.dkPunktum dk A/S (direct)
findit.dkPunktum dk A/S (direct)
fisker-forsker.dkDANDOMAIN A/S
flabbergast-bio.dkPunktum dk A/S (direct)
fleksibelenergi.dkPunktum dk A/S (direct)
flexibleenergi.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)
fusionsenergi.dkPunktum dk A/S (direct)
g2v2g.dkPunktum dk A/S (direct)
galathea3.dkPunktum dk A/S (direct)
genlife.dkPunktum dk A/S (direct)
gluckstad.dkPunktum dk A/S (direct)

Showing 100 of 205.

📋 WHOIS#

⏱️ Lookup Timing#

NS
106ms
A
137ms
MX
121ms
AAAA
148ms
TXT
244ms
CAA
131ms
HTTPS
129ms
TLSA
166ms
SOA
93ms
MTA-STS
121ms
DNSSEC
196ms
SRV
160ms
Total
1068ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-10 22:15:49 shown 1068ms 2 NS 1 A 3 MX 🔒 Secure
2026-10-09 20:17:12 1044ms 2 NS 1 A 3 MX 🔒 Secure
2026-10-05 16:57:37 3672ms 2 NS 1 A 3 MX 🔒 Secure
2026-09-30 16:37:47 4487ms 2 NS 1 A 3 MX 🔒 Secure
2026-09-30 08:12:27 1449ms 2 NS 1 A 3 MX 🔒 Secure
2026-09-27 20:21:35 1089ms 2 NS 1 A 3 MX 🔒 Secure
2026-09-15 07:04:32 875ms 2 NS 1 A 3 MX 🔒 Secure
2026-08-07 14:54:29 9614ms 2 NS 1 A 3 MX 🔒 Secure
2026-07-12 21:24:29 9303ms 2 NS 1 A 3 MX 🔒 Secure
2026-07-03 01:17:37 5338ms 2 NS 1 A 3 MX 🔒 Secure
2026-06-27 07:48:32 974ms 2 NS 1 A 3 MX 🔒 Secure
2026-06-22 15:08:53 1154ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-17 13:51:02 3072ms 2 NS 1 A 3 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone