kortx.dk

Records from scan: 2026-09-30 14:28:59 · 779ms total · last checked 2026-10-22 08:02 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kortx.dk is a .dk domain served by 2 nameservers (corey.ns.cloudflare.com, donna.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.4.67 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 57ms

Nameserver	IP addresses	PTR	ASN / ISP
corey.ns.cloudflare.com	108.162.195.24 162.159.44.24 172.64.35.24 2606:4700:58::a29f:2c18 2803:f800:50::6ca2:c318 2a06:98c1:50::ac40:2318	corey.ns.cloudflare.com corey.ns.cloudflare.com corey.ns.cloudflare.com corey.ns.cloudflare.com corey.ns.cloudflare.com corey.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
donna.ns.cloudflare.com	108.162.192.151 172.64.32.151 173.245.58.151 2606:4700:50::adf5:3a97 2803:f800:50::6ca2:c097 2a06:98c1:50::ac40:2097	donna.ns.cloudflare.com donna.ns.cloudflare.com donna.ns.cloudflare.com donna.ns.cloudflare.com donna.ns.cloudflare.com donna.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.4.67	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.154.17	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c09::1b 2a00:1450:4010:c09::1b 74.125.131.27	lk-in-x1b.1e100.net lk-in-f27.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1a	so-in-f26.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.154.17
🔶 Autoconfig	104.21.4.67

🔷 AAAA Records (IPv6)#

2 records 59ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:443	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:9a11	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.4.67,172.67.154.17 ech=AEX+DQBBsAAgACBT275Cb16Pb27QGeOSLO3Hy/XQxiszPugEzDprmo7naAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:443,2606:4700:3033::ac43:9a11

📝 TXT Records#

2 records 186ms

TXT Record
google-site-verification=MDpTB_SJGp0NWxgk9l_GEKQ_jj_bjv9h8_cJDcXKElw
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (kortx.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.kortx.dk)
p=reject	v=DMARC1; p=reject;rua=mailto:dmarckortx@gennemtaenkt.dk;

📬 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 2026-10-07 16:58:48

www	104.21.4.67 172.67.154.17 2606:4700:3031::6815:443 2606:4700:3033::ac43:9a11 (AS13335) (address records, no CNAME)
www vs bare domain	Same network kortx.dk: 104.21.4.67 172.67.154.17 2606:4700:3031::6815:443 2606:4700:3033::ac43:9a11 (AS13335) www.kortx.dk: 104.21.4.67 172.67.154.17 2606:4700:3031::6815:443 2606:4700:3033::ac43:9a11 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

43ms

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

🏷️ SOA#

49ms

Field	Value
Serial	2416087459
Primary NS (MNAME)	corey.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

57ms

28ms

59ms

AAAA

59ms

TXT

186ms

CAA

40ms

HTTPS

45ms

TLSA

99ms

SOA

49ms

MTA-STS

43ms

DNSSEC

43ms

SRV

77ms

Total

779ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 14:28:59 shown	779ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-29 13:29:39	930ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-31 19:53:54	1624ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-30 17:17:58	778ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-25 11:26:21	826ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-02 07:56:43	9393ms	2 NS 2 A 5 MX	❓ Unknown
2026-06-24 03:51:17	1076ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 11:46:27	5051ms	2 NS 2 A 5 MX	🔓 Insecure