konstant.dk

📜 Historical scan 2026-06-17 23:17:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

konstant.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 29 December 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.39.137 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by konstant-dk.a-v1.mx.microsoft. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 59ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.39.137	—	5.103.39.137.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Holbæk

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	konstant-dk.a-v1.mx.microsoft	2a01:111:f403:ca04::8 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 2a01:111:f403:ca09::c 52.101.68.12 52.101.68.36 52.101.73.1 52.101.73.15	mail-db5pr02cu00100.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.229.168

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

2 records 88ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	100	1	443	autodiscover.nrgi.dk
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

6 records 254ms

TXT Record
atlassian-domain-verification=ybKIsu5ATeKc4mKAcPSR3xqFIB701SlnmH1NBNl3SnKCko624iUHottOTJmqeLxU
google-site-verification=6W_PP1rL0vOQnIiBOvk6tf2QUBKaL9yZM_doLsIcEKY
google-site-verification=HyIHgtCBJakNUiU812Wiws3d0abUP88dJ2NbeseQFQE
MS=ms84018289
rvAfKR7IOxykk9Wm+45qHVg8IOlzA2pvIvetd2GlNoBhwiUO4gZUfDobIPMjeW/RvnMGVYV68b8Zv30oBIlmLA==
v=spf1 include:_spf55910.spf-protect.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (konstant.dk)
-all (hard fail)	v=spf1 include:_spf55910.spf-protect.dk include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.konstant.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:66e1b0706e8e3@dmarc-dk.centerasecurity.com; pct=100; fo=1;

📬 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#

latest probe, not this scan · checked 2026-10-15 06:40:15

www CNAME	konstant.dk (all on konstant.dk) → 5.103.39.137 (AS44869)
www vs bare domain	Same network konstant.dk: 5.103.39.137 (AS44869) www.konstant.dk: 5.103.39.137 (AS44869)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

7 records 142ms

Service / Owner	Type	Cert association
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	C495D9E40F7E625BE22F83CC64305182…
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	5F88694615E4C61686E106B84C3338C6…
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	A6C267923B26A4A9617EDA73D8DB4FBC…
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	38D895F5105BC2545822C17A2444F4B0…
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	133086C7B822371A4A3304F1661A7880…
SMTP _25._tcp.konstant-dk.a-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	6EBFF927297A5B3AAF5EAE672252C36A…
HTTPS _443._tcp.konstant.dk	DANE-EE · SPKI · SHA-256	5FFA07F15E7EABB8B3251CDCAAD8EAEA…

🔐 DNSSEC#

76ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

100ms

Field	Value
Serial	2026052601
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-23 19:25:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-12-29
Expires	2026-12-31 (68d)

🔗 Same registrant#

94 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).

Domain	Registrar
58500159.dk	Punktum dk A/S (direct)
70220094.dk	Punktum dk A/S (direct)
70262094.dk	Punktum dk A/S (direct)
allerød-kulturtorv.dk	A/S SCANNET
bestilenergimaerke.dk	Punktum dk A/S (direct)
bestilhuseftersyn.dk	Punktum dk A/S (direct)
birkeroed-el.dk	Punktum dk A/S (direct)
bl-termografi.dk	Punktum dk A/S (direct)
bl-thermografi.dk	Punktum dk A/S (direct)
buildingmanager.dk	Punktum dk A/S (direct)
byggelog.dk	Punktum dk A/S (direct)
byggeplandata.dk	Punktum dk A/S (direct)
co2jægeren.dk	Punktum dk A/S (direct)
den-digitale-tilstandsrapport.dk	A/S SCANNET
dendigitaletilstandsrapport.dk	A/S SCANNET
digital-tilstandsrapport.dk	A/S SCANNET
e10.dk	Punktum dk A/S (direct)
ebas.dk	Punktum dk A/S (direct)
elconnet.dk	Punktum dk A/S (direct)
elforalle.dk	Punktum dk A/S (direct)
elskoven.dk	Punktum dk A/S (direct)
eltek.dk	Punktum dk A/S (direct)
eltrans.dk	Punktum dk A/S (direct)
emodata.dk	Punktum dk A/S (direct)
energi-check.dk	Punktum dk A/S (direct)
energi-el-salg.dk	Punktum dk A/S (direct)
energi-venlig.dk	Punktum dk A/S (direct)
energi10.dk	Punktum dk A/S (direct)
energielhandel.dk	Punktum dk A/S (direct)
energiforfaen.dk	Punktum dk A/S (direct)
energiforfan.dk	Punktum dk A/S (direct)
energipark.dk	Punktum dk A/S (direct)
energirammeberegning.dk	Punktum dk A/S (direct)
energy08.dk	Punktum dk A/S (direct)
energyproject.dk	Punktum dk A/S (direct)
energyprojects.dk	Punktum dk A/S (direct)
energysolution.dk	Punktum dk A/S (direct)
energysystems.dk	Punktum dk A/S (direct)
enho2.dk	Punktum dk A/S (direct)
finddinnrgi.dk	Punktum dk A/S (direct)
fleetoptimize.dk	A/S SCANNET
forsyning-as.dk	Punktum dk A/S (direct)
frandsen-aba.dk	Punktum dk A/S (direct)
gratisenergibesparelse.dk	Punktum dk A/S (direct)
gronfleks.dk	Punktum dk A/S (direct)
grøn-flex.dk	Punktum dk A/S (direct)
herlevelektrikeren.dk	Punktum dk A/S (direct)
hoersholm-el.dk	Punktum dk A/S (direct)
intelligentbygningsautomatik.dk	Punktum dk A/S (direct)
iptek.dk	Punktum dk A/S (direct)
iso22000.dk	Punktum dk A/S (direct)
iso50001.dk	Punktum dk A/S (direct)
klimaidoler.dk	Punktum dk A/S (direct)
klosterhaven-roskilde.dk	Punktum dk A/S (direct)
ks-log.dk	Punktum dk A/S (direct)
kubenmanagement.dk	Punktum dk A/S (direct)
lyset-aalborg.dk	Punktum dk A/S (direct)
lysmail.dk	Punktum dk A/S (direct)
mitenergimaerke.dk	Punktum dk A/S (direct)
nordlysnet.dk	Punktum dk A/S (direct)
nrgi-butikken.dk	Punktum dk A/S (direct)
nrgi-co2fri.dk	Punktum dk A/S (direct)
nrgi-familien.dk	Punktum dk A/S (direct)
nrgi-klimapartner.dk	Punktum dk A/S (direct)
nrgi-system.dk	Punktum dk A/S (direct)
nrgi-tjek.dk	Punktum dk A/S (direct)
nrgi-valg.dk	Punktum dk A/S (direct)
nrgi.dk	Punktum dk A/S (direct)
nrgi100aar.dk	Punktum dk A/S (direct)
nrgi100år.dk	Punktum dk A/S (direct)
nrgico2fri.dk	Punktum dk A/S (direct)
nrgifamilien.dk	Punktum dk A/S (direct)
nrgiforfan.dk	Punktum dk A/S (direct)
nrgiinfo.dk	Punktum dk A/S (direct)
nrgiit.dk	Punktum dk A/S (direct)
nrgiklimapartner.dk	Punktum dk A/S (direct)
nrgimail.dk	Punktum dk A/S (direct)
nrginet.dk	Punktum dk A/S (direct)
nrgisol.dk	Punktum dk A/S (direct)
nrgisystems.dk	Punktum dk A/S (direct)
nrig-co2fri.dk	Punktum dk A/S (direct)
nrigco2-fir.dk	Punktum dk A/S (direct)
ntelservice.dk	Punktum dk A/S (direct)
nyborg-midtermole.dk	Punktum dk A/S (direct)
simpel-el.dk	Punktum dk A/S (direct)
simpelel.dk	Punktum dk A/S (direct)
smartebyer.dk	Punktum dk A/S (direct)
solpark-tagmark.dk	A/S SCANNET
ultramail.dk	Punktum dk A/S (direct)
v-o-k.dk	Punktum dk A/S (direct)
version3.dk	Punktum dk A/S (direct)
visuel-tilstandsrapport.dk	A/S SCANNET
web-vind.dk	Punktum dk A/S (direct)
webvind.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

59ms

30ms

40ms

AAAA

70ms

TXT

254ms

CAA

77ms

HTTPS

65ms

TLSA

142ms

SOA

100ms

MTA-STS

61ms

DNSSEC

76ms

SRV

88ms

Total

1068ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 06:40:15	548ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 05:40:31	509ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-03 13:18:54	580ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 02:57:09	788ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 20:45:05	716ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 22:20:45	2854ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 23:17:14 shown	1068ms	2 NS 1 A 1 MX	🔒 Secure