kronborggymnasterne.dk

📜 Historical scan 2026-06-21 10:44:47 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kronborggymnasterne.dk is a .dk domain served by 2 nameservers (duke.ns.cloudflare.com, kiki.ns.cloudflare.com). It was registered on 30 August 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.50.94 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.mailpod15-cph3.g1i.one.com, mx2.mailpod15-cph3.g1i.one.com and 2 more. The zone is not DNSSEC-signed, has no 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 41ms

Nameserver	IP addresses	PTR	ASN / ISP
duke.ns.cloudflare.com	108.162.193.110 172.64.33.110 173.245.59.110 2606:4700:58::adf5:3b6e 2803:f800:50::6ca2:c16e 2a06:98c1:50::ac40:216e	duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kiki.ns.cloudflare.com	108.162.192.180 172.64.32.180 173.245.58.180 2606:4700:50::adf5:3ab4 2803:f800:50::6ca2:c0b4 2a06:98c1:50::ac40:20b4	kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.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 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.50.94	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.159.236	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

4 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx1.mailpod15-cph3.g1i.one.com	104.37.35.36	mx1.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	600s	mx2.mailpod15-cph3.g1i.one.com	104.37.35.37	mx2.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	600s	mx3.mailpod15-cph3.g1i.one.com	104.37.35.38	mx3.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S
10	600s	mx4.mailpod15-cph3.g1i.one.com	104.37.35.39	mx4.mailpod15-cph3.g1i.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.159.236
🔶 Autoconfig	172.67.159.236

🔷 AAAA Records (IPv6)#

2 records 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:325e	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:9fec	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.50.94,172.67.159.236 ech=AEX+DQBBzwAgACDlcO3wqXcomVymrC4ENRRXxmNtiXl34MqUMeniN3uBEAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:325e,2606:4700:3035::ac43:9fec

📝 TXT Records#

1 records 209ms

TXT Record
v=spf1 include:_custspf.one.com ~all

✉️ SPF#

Policy	Record (kronborggymnasterne.dk)
~all (soft fail)	v=spf1 include:_custspf.one.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-23 08:47:22

www	104.21.50.94 172.67.159.236 2606:4700:3030::6815:325e 2606:4700:3034::ac43:9fec (AS13335) (address records, no CNAME)
www vs bare domain	Same network kronborggymnasterne.dk: 104.21.50.94 172.67.159.236 2606:4700:3030::6815:325e 2606:4700:3034::ac43:9fec (AS13335) www.kronborggymnasterne.dk: 104.21.50.94 172.67.159.236 2606:4700:3030::6815:325e 2606:4700:3034::ac43:9fec (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#

4 records 165ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx2.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx3.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…
SMTP _25._tcp.mx4.mailpod15-cph3.g1i.one.com	DANE-EE · SPKI · SHA-256	DB00CDA1DB82CC93CBF96D7D5806F329…

🔐 DNSSEC#

80ms

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

🏷️ SOA#

50ms

Field	Value
Serial	2402934253
Primary NS (MNAME)	duke.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 10:31:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-08-30
Expires	2027-09-30 (341d)

🔗 Same registrant#

1 domain

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
hgf-gymnastik.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

41ms

52ms

50ms

AAAA

36ms

TXT

209ms

CAA

50ms

HTTPS

34ms

TLSA

165ms

SOA

50ms

MTA-STS

26ms

DNSSEC

80ms

SRV

73ms

Total

731ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 08:47:22	651ms	2 NS 2 A 4 MX	🔓 Insecure
2026-10-19 15:32:29	886ms	2 NS 2 A 4 MX	🔓 Insecure
2026-10-18 14:31:55	1710ms	2 NS 2 A 4 MX	🔓 Insecure
2026-10-17 13:18:10	1034ms	2 NS 2 A 4 MX	🔓 Insecure
2026-10-16 12:57:54	684ms	2 NS 2 A 4 MX	🔓 Insecure
2026-09-30 18:01:53	2592ms	2 NS 2 A 4 MX	🔓 Insecure
2026-09-24 17:26:41	2543ms	2 NS 2 A 4 MX	🔓 Insecure
2026-09-10 19:28:38	826ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-25 05:23:03	2044ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-18 23:31:32	6748ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-16 14:26:04	4419ms	2 NS 2 A 4 MX	🔓 Insecure
2026-07-03 14:56:21	2976ms	2 NS 2 A 4 MX	🔓 Insecure
2026-07-01 05:31:22	1801ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-26 21:10:22	822ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-21 10:44:47 shown	731ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-18 00:24:06	983ms	2 NS 2 A 4 MX	🔓 Insecure