c-kronborg.dk

📜 Historical scan 2026-08-24 19:28:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-kronborg.dk is a .dk domain served by 2 nameservers (piers.ns.cloudflare.com, wanda.ns.cloudflare.com). It was registered on 8 March 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.81.64 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 of unknown DNSSEC status, 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 40ms

Nameserver	IP addresses	PTR	ASN / ISP
piers.ns.cloudflare.com	108.162.195.16 162.159.44.16 172.64.35.16 2606:4700:58::a29f:2c10 2803:f800:50::6ca2:c310 2a06:98c1:50::ac40:2310	piers.ns.cloudflare.com piers.ns.cloudflare.com piers.ns.cloudflare.com piers.ns.cloudflare.com piers.ns.cloudflare.com piers.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
wanda.ns.cloudflare.com	108.162.192.240 172.64.32.240 173.245.58.240 2606:4700:50::adf5:3af0 2803:f800:50::6ca2:c0f0 2a06:98c1:50::ac40:20f0	wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.ns.cloudflare.com wanda.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 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.81.64	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.157.105	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c1c::1b 74.125.205.26	la-in-f27.1e100.net le-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx2.googlemail.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
10	300s	aspmx3.googlemail.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:9d69	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::6815:5140	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.81.64,172.67.157.105 ech=AEX+DQBBGgAgACAHgAqXUNPsGp8SY7p3LxvlwzA9HnyO1d8HsVyEmB/eVQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:9d69,2606:4700:3031::6815:5140

📝 TXT Records#

1 records 194ms

TXT Record
google-site-verification=_GvZLLOVx8-FqwBwRwWp60dV_dV5V7CoEExltjRC_Bo

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-10 10:32:54

www	Exists, no address
www vs bare domain	www does not resolve c-kronborg.dk: 188.114.96.1 188.114.97.1 2606:4700:3030::ac43:9d69 2606:4700:3031::6815:5140 (AS13335) www.c-kronborg.dk: no address (all like this)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.c-kronborg.dk	h31g4rGqH-d_tivFjxuyvq4E--lpY9tQixKO4bhxM-4
TXT	_acme-challenge.c-kronborg.dk	rGg4wtY4LxQx2BQ8e1xFehfSx_TY5LMhiDsr-EijSKc

🔗 TLSA / DANE#

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

🔐 DNSSEC#

120ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'c-kronborg.dk/DNSKEY/IN': 127.0.0.1#53

🏷️ SOA#

0ms

Field	Value
Serial	2413021880
Primary NS (MNAME)	piers.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 05:39:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2004-03-08
Expires	2027-03-31 (163d)

🔗 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
kronborgskoereskole.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

40ms

35ms

37ms

AAAA

34ms

TXT

194ms

CAA

39ms

HTTPS

37ms

TLSA

106ms

SOA

0ms

MTA-STS

66ms

DNSSEC

120ms

SRV

126ms

Total

3702ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 23:35:23	2520ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 23:22:35	712ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 00:56:09	3220ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-28 00:21:12	1629ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-27 00:04:27	900ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-25 23:40:28	10205ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-20 16:56:39	882ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-15 18:53:57	2519ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-08 16:01:00	2103ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-29 08:10:42	1134ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-25 11:26:25	847ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-24 19:28:19 shown	3702ms	2 NS 2 A 5 MX	❓ Unknown
2026-08-12 15:55:59	6066ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-21 07:21:31	1797ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-20 02:19:18	1594ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-27 11:15:17	957ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 21:15:49	1338ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 19:45:17	1105ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 18:41:52	512ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-16 18:40:47	735ms	2 NS 2 A 5 MX	🔓 Insecure