mastercore.dk

📜 Historical scan 2026-09-29 12:04:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mastercore.dk is a .dk domain served by 2 nameservers (audrey.ns.cloudflare.com, robert.ns.cloudflare.com). It was registered on 2 September 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.39.114 is hosted by Cloudflare, Inc. (AS13335). 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 31ms

Nameserver	IP addresses	PTR	ASN / ISP
audrey.ns.cloudflare.com	108.162.194.66 162.159.38.66 172.64.34.66 2606:4700:50::a29f:2642 2803:f800:50::6ca2:c242 2a06:98c1:50::ac40:2242	audrey.ns.cloudflare.com audrey.ns.cloudflare.com audrey.ns.cloudflare.com audrey.ns.cloudflare.com audrey.ns.cloudflare.com audrey.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
robert.ns.cloudflare.com	108.162.195.140 162.159.44.140 172.64.35.140 2606:4700:58::a29f:2c8c 2803:f800:50::6ca2:c38c 2a06:98c1:50::ac40:238c	robert.ns.cloudflare.com robert.ns.cloudflare.com robert.ns.cloudflare.com robert.ns.cloudflare.com robert.ns.cloudflare.com robert.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 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.39.114	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.144.224	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 44ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2772	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:90e0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 57ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.39.114,172.67.144.224 ech=AEX+DQBBOQAgACAI1UBELWGTFMIfnYHINDUpGpjVC7f/gCzU8qcW19WbSwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2772,2606:4700:3037::ac43:90e0

📝 TXT Records#

📝

No TXT records found

✉️ 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 2026-10-22 21:35:39

www	104.21.39.114 172.67.144.224 2606:4700:3031::6815:2772 2606:4700:3037::ac43:90e0 (AS13335) (address records, no CNAME)
www vs bare domain	Same network mastercore.dk: 104.21.39.114 172.67.144.224 2606:4700:3031::6815:2772 2606:4700:3037::ac43:90e0 (AS13335) www.mastercore.dk: 104.21.39.114 172.67.144.224 2606:4700:3031::6815:2772 2606:4700:3037::ac43:90e0 (AS13335)
Wildcard	No

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.mastercore.dk	5vF6rtoYppThmW-5w1hgiPxXco_2UZAPynH9R_jCfEg
TXT	_acme-challenge.mastercore.dk	TCf7mmLQYm2-rQbcZ4JzlCGn6ZPsIXuT5tTXeVeVxyo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

119ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2416136725
Primary NS (MNAME)	audrey.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-01 12:43:56

Field	Value
Registrar	Openprovider
Registered	2026-09-02
Expires	2027-09-01 (312d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

45ms

46ms

AAAA

44ms

TXT

174ms

CAA

34ms

HTTPS

57ms

TLSA

52ms

SOA

0ms

MTA-STS

70ms

DNSSEC

119ms

SRV

85ms

Total

619ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 21:35:39	988ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-01 12:19:59	735ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-29 12:04:20 shown	619ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-25 11:34:04	732ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 11:23:35	572ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-23 11:11:27	614ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-04 06:05:37	834ms	2 NS 0 A 0 MX	🔓 Insecure
2026-08-31 19:04:02	161ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-28 10:07:37	161ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-27 10:03:46	838ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-26 22:52:25	176ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-25 00:41:27	526ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-24 00:14:53	812ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-22 19:22:36	943ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-21 19:12:56	854ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-20 19:00:06	16818ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-19 18:32:39	8703ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-18 18:29:36	11085ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-16 20:18:46	8737ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-15 07:44:28	2623ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-14 04:28:09	2052ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-12 18:13:40	1512ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-10 16:40:14	842ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-08 03:33:19	1230ms	1 NS 0 A 0 MX	❓ Unknown
2026-08-06 17:11:28	8639ms	1 NS 0 A 0 MX	❓ Unknown