mercura.dk

📜 Historical scan 2026-06-25 09:36:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mercura.dk is a .dk domain served by 2 nameservers (jay.ns.cloudflare.com, lina.ns.cloudflare.com). It was registered on 13 February 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.28.253 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mercura-dk.mail.protection.outlook.com. 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 43ms

Nameserver	IP addresses	PTR	ASN / ISP
jay.ns.cloudflare.com	108.162.193.123 172.64.33.123 173.245.59.123 2606:4700:58::adf5:3b7b 2803:f800:50::6ca2:c17b 2a06:98c1:50::ac40:217b	jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lina.ns.cloudflare.com	108.162.192.187 172.64.32.187 173.245.58.187 2606:4700:50::adf5:3abb 2803:f800:50::6ca2:c0bb 2a06:98c1:50::ac40:20bb	lina.ns.cloudflare.com lina.ns.cloudflare.com lina.ns.cloudflare.com lina.ns.cloudflare.com lina.ns.cloudflare.com lina.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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.28.253	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.147.240	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mercura-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca09::3 2a01:111:f403:ca09::7 2a01:111:f403:ca09::9 52.101.68.25 52.101.68.3 52.101.68.39 52.101.73.24	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	57.129.84.98
🔶 Autoconfig	57.129.84.98

🔷 AAAA Records (IPv6)#

2 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:1cfd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:93f0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 44ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.28.253,172.67.147.240 ech=AEX+DQBBrQAgACDfKA9Er9zsycphwr8CPeCFgeOw+dJUA372SNUUI7jcdwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:1cfd,2606:4700:3036::ac43:93f0

📝 TXT Records#

5 records 156ms

TXT Record
_dmarc.mercura.dk
google-site-verification=Ba_nePzJjF5wcFMFPHRZZlxJGg5AjBISkosuQCWvLW8
MS=ms41689367
v=spf1 +a +mx include:_custspf.one.com include:spf.protection.outlook.com ip4: 94.237.100.247 -all
v=spf1 +a +mx include:_custspf.one.com include:spf.protection.outlook.com ip4:94.237.100.247 -all

✉️ SPF#

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (mercura.dk)
-all (hard fail)	v=spf1 +a +mx include:_custspf.one.com include:spf.protection.outlook.com ip4: 94.237.100.247 -all
-all (hard fail)	v=spf1 +a +mx include:_custspf.one.com include:spf.protection.outlook.com ip4:94.237.100.247 -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 2026-10-12 22:54:47

www	104.21.28.253 172.67.147.240 2606:4700:3030::6815:1cfd 2606:4700:3035::ac43:93f0 (AS13335) (address records, no CNAME)
www vs bare domain	Same network mercura.dk: 104.21.28.253 172.67.147.240 2606:4700:3030::6815:1cfd 2606:4700:3035::ac43:93f0 (AS13335) www.mercura.dk: 104.21.28.253 172.67.147.240 2606:4700:3030::6815:1cfd 2606:4700:3035::ac43:93f0 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-mercura-dk._domainkey.mercuradk.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: -all

error 2 SPF records: receivers must treat that as a permanent error (RFC 7208 §4.5)
error Unknown mechanism "94.237.100.247": receivers treat the record as a permanent error

🔗 TLSA / DANE#

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

🔐 DNSSEC#

92ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2404776202
Primary NS (MNAME)	jay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 18:22:57

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-02-13
Expires	2027-02-28 (133d)

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

📋 WHOIS#

⏱️ Lookup Timing#

43ms

33ms

42ms

AAAA

46ms

TXT

156ms

CAA

32ms

HTTPS

44ms

TLSA

247ms

SOA

39ms

MTA-STS

51ms

DNSSEC

92ms

SRV

61ms

Total

1014ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-22 01:42:51	1568ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-15 00:10:18	10892ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-24 12:08:52	3705ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-19 05:58:57	3283ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-27 07:58:42	1412ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 09:36:44 shown	1014ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 09:44:31	1124ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 02:01:04	14537ms	2 NS 2 A 1 MX	🔓 Insecure