cortrium.dk

📜 Historical scan 2026-06-21 09:02:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cortrium.dk is a .dk domain served by 2 nameservers (edna.ns.cloudflare.com, kyree.ns.cloudflare.com). It was registered on 11 September 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.56.39 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 299ms

Nameserver	IP addresses	PTR	ASN / ISP
edna.ns.cloudflare.com	108.162.192.109 172.64.32.109 173.245.58.109 2606:4700:50::adf5:3a6d 2803:f800:50::6ca2:c06d 2a06:98c1:50::ac40:206d	edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com edna.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kyree.ns.cloudflare.com	108.162.195.207 162.159.44.207 172.64.35.207 2606:4700:58::a29f:2ccf 2803:f800:50::6ca2:c3cf 2a06:98c1:50::ac40:23cf	kyree.ns.cloudflare.com kyree.ns.cloudflare.com kyree.ns.cloudflare.com kyree.ns.cloudflare.com kyree.ns.cloudflare.com kyree.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 316ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.56.39	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.176.173	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 185ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::ac43:b0ad	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3827	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 296ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.56.39,172.67.176.173 ech=AEX+DQBBSwAgACDTH0dO93KIbPZYAycK7ldErPVzWNPCBLxALbPI6FMxdQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:b0ad,2606:4700:3037::6815:3827

📝 TXT Records#

1 records 596ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (cortrium.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.cortrium.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:6412b30a87d94450a470dc9ef6592f02@dmarc-reports.cloudflare.net

📬 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 2026-10-16 07:43:41

www	104.21.56.39 172.67.176.173 2606:4700:3031::6815:3827 2606:4700:3031::ac43:b0ad (AS13335) (address records, no CNAME)
www vs bare domain	Same network cortrium.dk: 104.21.56.39 172.67.176.173 2606:4700:3031::6815:3827 2606:4700:3031::ac43:b0ad (AS13335) www.cortrium.dk: 104.21.56.39 172.67.176.173 2606:4700:3031::6815:3827 2606:4700:3031::ac43:b0ad (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

462ms

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

🏷️ SOA#

234ms

Field	Value
Serial	2407169854
Primary NS (MNAME)	edna.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-11 15:42:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2018-09-11
Expires	2027-09-30 (347d)

🔗 Same registrant#

2 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
sana-alliance.dk	Punktum dk A/S (direct)
sanaalliance.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

299ms

316ms

197ms

AAAA

185ms

TXT

596ms

CAA

178ms

HTTPS

296ms

TLSA

232ms

SOA

234ms

MTA-STS

289ms

DNSSEC

462ms

SRV

333ms

Total

2019ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 07:43:41	433ms	2 NS 2 A 0 MX	🔒 Secure
2026-10-01 00:19:51	520ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-22 20:33:17	1183ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-20 17:49:42	1377ms	2 NS 2 A 0 MX	🔒 Secure
2026-09-16 13:29:38	1779ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-28 18:32:37	555ms	2 NS 2 A 0 MX	🔒 Secure
2026-08-05 04:57:41	1542ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-23 05:51:06	1692ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-17 05:03:46	850ms	2 NS 2 A 0 MX	🔒 Secure
2026-07-12 05:05:05	2842ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-27 16:51:55	1875ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-24 16:41:25	1088ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-21 09:02:22 shown	2019ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-20 21:33:54	1126ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-16 22:52:45	1455ms	2 NS 2 A 0 MX	🔒 Secure
2026-06-16 22:31:09	606ms	2 NS 2 A 0 MX	🔒 Secure