kortsagt.dk

📜 Historical scan 2026-06-27 08:57:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kortsagt.dk is a .dk domain served by 2 nameservers (ns1.netgiganten.dk, ns2.netgiganten.dk). It was registered on 25 March 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 213.184.85.17 is hosted by PerfGrid (AS59795) in The Netherlands. Mail is handled by mx4.spamfri.dk, mx2.spamfri.dk and 2 more. The zone is not DNSSEC-signed, 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 171ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.netgiganten.dk	195.242.130.5 2001:67c:564:eeee::11	ns1.netgiganten.dk —	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.netgiganten.dk	2a00:1b18:2:3:4::2 62.69.152.38	— 38.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

1 records 225ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
213.184.85.17	14400s	nlcp08.h4r-infra.net	AS59795	PerfGrid	213.184.84.0/23	🇳🇱 The Netherlands	—

📧 MX Records#

4 records 185ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx4.spamfri.dk	193.200.91.108 2001:67c:564:fffd::4001	mx4.spamfri.dk mx4.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
20	3600s	mx2.spamfri.dk	193.200.91.109 2001:67c:564:fffd::2001	mx2.spamfri.dk mx2.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
30	3600s	mx3.spamfri.dk	2a00:1b18:2:3:fe::2 62.69.152.43 62.69.152.43	mx3.spamfri.dk 43.34-46.152.69.62.in-addr.arpa mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S AS47527 DLX A/S
40	3600s	mx1.spamfri.dk	195.242.131.16 2001:67c:564:fffd::1001	mx1.spamfri.dk mx1.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	195.242.130.12
🔶 Autoconfig	195.242.130.12

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 269ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	cpanelemaildiscovery.cpanel.net

📝 TXT Records#

1 records 427ms

TXT Record
v=spf1 +a +mx +ip4:195.242.130.12 include:_spf.netgiganten.dk ~all

✉️ SPF#

Policy	Record (kortsagt.dk)
~all (soft fail)	v=spf1 +a +mx +ip4:195.242.130.12 include:_spf.netgiganten.dk ~all

📨 DMARC#

Policy	Record (_dmarc.kortsagt.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-07 18:39:39

www CNAME	kortsagt.dk (all on kortsagt.dk) → 213.184.85.17 (AS59795)
www vs bare domain	Same network kortsagt.dk: 213.184.85.17 (AS59795) www.kortsagt.dk: 213.184.85.17 (AS59795)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.kortsagt.dk	JeSYwAmVECMS80-z-YsYz1wlK3Yb-DIbGSVAThJjTTw

🔗 TLSA / DANE#

4 records 2036ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.spamfri.dk	DANE-EE · SPKI · SHA-256	884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk	DANE-EE · SPKI · SHA-256	6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk	DANE-EE · SPKI · SHA-256	BBFB0694919290E5BC9D6E2C6F47D846…
SMTP _25._tcp.mx4.spamfri.dk	DANE-EE · SPKI · SHA-256	4EE743A99328AEF5142706CA5FD3AD61…

🔐 DNSSEC#

343ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

210ms

Field	Value
Serial	2026051403
Primary NS (MNAME)	ns1.netgiganten.dk
Responsible (RNAME)	hostmaster@mailrelay.e-studio.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-23 08:55:10

Field	Value
Registrar	dns.services ApS
Registered	2008-03-25
Expires	2027-03-31 (158d)

🔗 Same registrant#

3 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
byaarup.dk	Punktum dk A/S (direct)
miksof.dk	Punktum dk A/S (direct)
talmheim.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

171ms

225ms

185ms

AAAA

233ms

TXT

427ms

CAA

195ms

HTTPS

236ms

TLSA

2036ms

SOA

210ms

MTA-STS

258ms

DNSSEC

343ms

SRV

269ms

Total

3853ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 15:36:26	668ms	2 NS 1 A 4 MX	🔓 Insecure
2026-09-27 15:08:57	723ms	2 NS 1 A 4 MX	🔓 Insecure
2026-09-20 10:27:11	1018ms	2 NS 1 A 4 MX	🔓 Insecure
2026-07-16 00:37:04	1391ms	2 NS 1 A 4 MX	🔓 Insecure
2026-06-27 08:57:34 shown	3853ms	2 NS 1 A 4 MX	🔓 Insecure
2026-06-22 19:46:09	779ms	2 NS 1 A 4 MX	🔓 Insecure
2026-06-18 04:30:25	947ms	2 NS 1 A 4 MX	🔓 Insecure