skat.dk

📜 Historical scan 2026-09-08 23:27:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

skat.dk is a .dk domain served by 6 nameservers (df-ns01.skat.dk, df-ns02.skat.dk, df-ns03.skat.dk and 3 more). It was registered on 22 April 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by skat-dk.e-v1.mx.microsoft. The zone is DNSSEC-signed but currently fails validation, 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#

6 records 91ms

Nameserver	IP addresses	PTR	ASN / ISP
df-ns01.skat.dk	147.29.150.31	df-ns01.skat.dk	AS3292 TDC Holding A/S
df-ns02.skat.dk	147.29.151.254	df-ns02.skat.dk	AS3292 TDC Holding A/S
df-ns03.skat.dk	147.29.150.31	df-ns01.skat.dk	AS3292 TDC Holding A/S
df-ns04.skat.dk	147.29.151.254	df-ns02.skat.dk	AS3292 TDC Holding A/S
ns1-auth.csc.dk	147.29.236.25 2a01:5440:2:0:147:29:236:25	ns1-auth.csc.dk —	AS29156 DXC Technology Danmark A/S AS29156 DXC Technology Danmark A/S
ns2-auth.csc.dk	147.29.238.25 2a01:5440:2:2000:147:29:238:25	ns2-auth.csc.dk —	AS29156 DXC Technology Danmark A/S AS29156 DXC Technology Danmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 113ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	1800s	skat-dk.e-v1.mx.microsoft	2a01:111:f403:ca04::2 2a01:111:f403:ca04::5 2a01:111:f403:ca04::b 2a01:111:f403:ca09::24 52.101.68.36 52.101.73.11 52.101.73.123 52.101.73.15	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am6pr02cu00203.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 → 52.98.253.184

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 798ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	0	5061	sipfed.online.lync.com

📝 TXT Records#

7 records 339ms

TXT Record
_globalsign-domain-verification=SDO1mi3Vhsk0V1ROq6Ti13bgOoz0bORtTA_Mwimp9N
6pnkQeO2KpskXIsNNabjYMKmEfl0jq5yfHMZxu3OAzw=
apple-domain-verification=w1x2I7SOS2RhFAY4
google-site-verification=6bJBWCLiBTyiYQHYSoHwYBLMa35bPu7sKtDpRoi-Zz4
MS=ms89961653
SKAT
v=spf1 ip4:147.29.109.227 ip4:147.29.150.227 ip4:85.119.135.105 ip4:85.119.135.96 ip4:147.29.27.196 ip4:185.150.75.24 ip4:207.54.71.162 ip4:207.54.72.99 ip6:2620:101:2011:300::1a ip6:2620:101:2012:300::1a include:spf.protection.outlook.com include:_spf.operate.skat.dk -all

✉️ SPF#

Policy	Record (skat.dk)
-all (hard fail)	v=spf1 ip4:147.29.109.227 ip4:147.29.150.227 ip4:85.119.135.105 ip4:85.119.135.96 ip4:147.29.27.196 ip4:185.150.75.24 ip4:207.54.71.162 ip4:207.54.72.99 ip6:2620:101:2011:300::1a ip6:2620:101:2012:300::1a include:spf.protection.outlook.com include:_spf.operate.skat.dk -all

📨 DMARC#

Policy	Record (_dmarc.skat.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:fd0c97ad@in.mailhardener.com; ruf=mailto:fd0c97ad@in.mailhardener.com

📬 MTA-STS#

616ms

Check	Result
Status	⚠️ Invalid
TXT record (_mta-sts)	✓ Found
HTTPS policy	✗ Missing / invalid
Policy ID	20190601000000Z
Policy MX	—

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:tlsrpt@in.mailhardener.com

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-19 20:28:50

www CNAME	skat-prod-c5dudma0f0g0b5ht.a02.azurefd.net (all on azurefd.net) → 150.171.109.194 2603:1061:14:c0::1 (AS8075)
www vs bare domain	Same network skat.dk: 150.171.109.194 (AS8075) www.skat.dk: 150.171.109.194 2603:1061:14:c0::1 (AS8075)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

4 records 253ms

Service / Owner	Type	Cert association
SMTP _25._tcp.skat-dk.e-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.skat-dk.e-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…
SMTP _25._tcp.skat-dk.e-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.skat-dk.e-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…

🔐 DNSSEC#

675ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: failure

🏷️ SOA#

0ms

Field	Value
Serial	2026099796
Primary NS (MNAME)	df-ns01.skat.dk
Responsible (RNAME)	hostmaster@csc.dk
Refresh	14400s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-12 11:25:12

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-04-22
Expires	2029-07-31 (1014d)

🔗 Same registrant#

105 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
administrationsogservicestyrelsen.dk	Punktum dk A/S (direct)
adst.dk	Punktum dk A/S (direct)
bankoregler.dk	Punktum dk A/S (direct)
bbr.dk	Punktum dk A/S (direct)
boligskat2024.dk	Punktum dk A/S (direct)
boligskat24.dk	Punktum dk A/S (direct)
bygningsogboligregistret.dk	Punktum dk A/S (direct)
ccta.dk	A/S SCANNET
dagsbevis.dk	Punktum dk A/S (direct)
danishgamblingauthority.dk	Punktum dk A/S (direct)
del-en-ting.dk	Punktum dk A/S (direct)
dinveteranbil.dk	Punktum dk A/S (direct)
e-skat.dk	Punktum dk A/S (direct)
eindkomst.dk	Punktum dk A/S (direct)
ejendomsinformation.dk	Punktum dk A/S (direct)
ejendomsvurderingsportal.dk	Punktum dk A/S (direct)
ejendomsvurderingsportalen.dk	Punktum dk A/S (direct)
fds.dk	Punktum dk A/S (direct)
fordringshaverportal.dk	Punktum dk A/S (direct)
forskud.dk	Punktum dk A/S (direct)
gaeldsstyrelsen.dk	Punktum dk A/S (direct)
gaeldst.dk	Punktum dk A/S (direct)
gaeldstyrelsen.dk	Punktum dk A/S (direct)
geokoderen.dk	Punktum dk A/S (direct)
gældsstyrelsen.dk	Punktum dk A/S (direct)
gældst.dk	Punktum dk A/S (direct)
icesys.dk	Punktum dk A/S (direct)
inddr.dk	Punktum dk A/S (direct)
it-stat.dk	Punktum dk A/S (direct)
itstat.dk	Punktum dk A/S (direct)
itti.dk	Punktum dk A/S (direct)
letloen.dk	Punktum dk A/S (direct)
letlon.dk	Punktum dk A/S (direct)
letlontest.dk	Punktum dk A/S (direct)
letløn.dk	Punktum dk A/S (direct)
lotteriregler.dk	Punktum dk A/S (direct)
ludomanilinjen.dk	Punktum dk A/S (direct)
min-skat.dk	Punktum dk A/S (direct)
minfoerstebil.dk	Punktum dk A/S (direct)
mitgaeldsoverblik.dk	Punktum dk A/S (direct)
mitgældsoverblik.dk	Punktum dk A/S (direct)
motorst.dk	Punktum dk A/S (direct)
motorstyrelsen.dk	Punktum dk A/S (direct)
nem-skat.dk	Punktum dk A/S (direct)
nummerplader.dk	Punktum dk A/S (direct)
ois.dk	Punktum dk A/S (direct)
rejseregler.dk	Punktum dk A/S (direct)
ret-bbr.dk	Punktum dk A/S (direct)
retbbr.dk	Punktum dk A/S (direct)
retvisende-ejendomsvurdering.dk	Punktum dk A/S (direct)
retvisende-ejendomsvurderinger.dk	Punktum dk A/S (direct)
retvisendeejendomsvurdering.dk	Punktum dk A/S (direct)
retvisendeejendomsvurderinger.dk	Punktum dk A/S (direct)
skaat.dk	Punktum dk A/S (direct)
skatt.dk	Punktum dk A/S (direct)
skatte-ogvaekstministeriet.dk	Punktum dk A/S (direct)
skatte-ogvækstministeriet.dk	Punktum dk A/S (direct)
skatteforvaltningen.dk	Punktum dk A/S (direct)
skatteministeriet.dk	Punktum dk A/S (direct)
skatteogvaekstministeriet.dk	Punktum dk A/S (direct)
skatteogvækstministeriet.dk	Punktum dk A/S (direct)
skatterådet.dk	Punktum dk A/S (direct)
skattestyrelsen.dk	Punktum dk A/S (direct)
skattevaesnet.dk	Punktum dk A/S (direct)
skattevæsnet.dk	Punktum dk A/S (direct)
skm.dk	Punktum dk A/S (direct)
sktst.dk	Punktum dk A/S (direct)
skvm.dk	Punktum dk A/S (direct)
spillemyndigheden.dk	Punktum dk A/S (direct)
spillemyndighederne.dk	Punktum dk A/S (direct)
spillestyrelsen.dk	Punktum dk A/S (direct)
spilletilsynet.dk	Punktum dk A/S (direct)
splitstruktur.dk	Punktum dk A/S (direct)
statens-inkasso.dk	Punktum dk A/S (direct)
stopspillet.dk	Punktum dk A/S (direct)
styrpaaspillet.dk	Punktum dk A/S (direct)
styrpaspillet.dk	Punktum dk A/S (direct)
svmin.dk	Punktum dk A/S (direct)
svministeriet.dk	Punktum dk A/S (direct)
svmn.dk	Punktum dk A/S (direct)
tastselvskat.dk	Punktum dk A/S (direct)
tjektolden.dk	Punktum dk A/S (direct)
toldogskat.dk	Punktum dk A/S (direct)
toldportal.dk	Punktum dk A/S (direct)
toldportalen.dk	Punktum dk A/S (direct)
toldskat.dk	Punktum dk A/S (direct)
toldst.dk	Punktum dk A/S (direct)
toldstyrelsen.dk	Punktum dk A/S (direct)
toldsystem.dk	Punktum dk A/S (direct)
toldsystemet.dk	Punktum dk A/S (direct)
toolchain.dk	Punktum dk A/S (direct)
tredjenummerplade.dk	Punktum dk A/S (direct)
tsroot.dk	Punktum dk A/S (direct)
udviklingsogforenklingsstyrelsen.dk	Punktum dk A/S (direct)
ufst.dk	Punktum dk A/S (direct)
ufstlab.dk	Punktum dk A/S (direct)
undgaaprischok.dk	Punktum dk A/S (direct)
undgåprischok.dk	Punktum dk A/S (direct)
vurderingportalen.dk	Punktum dk A/S (direct)
vurderings-portalen.dk	Punktum dk A/S (direct)

Showing 100 of 105.

📋 WHOIS#

⏱️ Lookup Timing#

91ms

222ms

113ms

AAAA

104ms

TXT

339ms

CAA

110ms

HTTPS

87ms

TLSA

253ms

SOA

0ms

MTA-STS

616ms

DNSSEC

675ms

SRV

798ms

Total

6355ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 20:28:50	2614ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-18 19:31:29	1172ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-17 18:42:15	1654ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-16 17:26:49	2084ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-15 15:22:05	652ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-14 14:54:31	2504ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-13 13:36:36	864ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-12 10:59:57	2274ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-11 08:31:21	673ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-09 22:55:12	1317ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-08 11:52:18	1436ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-07 11:44:23	600ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-06 05:57:12	3999ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-05 05:33:18	2640ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-04 05:25:39	599ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-03 05:25:16	2592ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-02 05:22:43	2673ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-01 05:07:47	581ms	6 NS 1 A 1 MX	🔒 Secure
2026-10-01 03:51:57	1094ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-30 03:47:36	1141ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-29 03:42:57	846ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-28 03:26:49	1133ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-27 03:01:30	1311ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-26 02:37:05	2093ms	6 NS 1 A 1 MX	🔒 Secure
2026-09-25 02:13:38	1471ms	6 NS 1 A 1 MX	🔒 Secure