mt-construction.dk

📜 Historical scan 2026-09-26 16:54:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mt-construction.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 25 June 2026 (WHOIS) and first appeared in the .dk zone on 26 June 2026. Its website address 104.21.45.34 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. 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 42ms

Nameserver	IP addresses	PTR	ASN / ISP
barbara.ns.cloudflare.com	108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8	barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.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
104.21.45.34	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.208.93	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	3600s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)#

2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:2d22	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:d05d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 51ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.45.34,172.67.208.93 ech=AEX+DQBBegAgACC7qEZkgW2KJxglVK52B5L+RN3FIyTY0YGe9CBJrCxaRwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:2d22,2606:4700:3035::ac43:d05d

📝 TXT Records#

1 records 188ms

TXT Record
v=spf1 a include:spf.curanet.dk ~all

✉️ SPF#

Policy	Record (mt-construction.dk)
~all (soft fail)	v=spf1 a include:spf.curanet.dk ~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 2026-10-07 19:22:40

www	104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335) (address records, no CNAME)
www vs bare domain	Same network mt-construction.dk: 104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335) www.mt-construction.dk: 104.21.45.34 172.67.208.93 2606:4700:3032::6815:2d22 2606:4700:3035::ac43:d05d (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

76ms

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	2413084073
Primary NS (MNAME)	barbara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 13:48:35

Field	Value
Registrar	CURANET A/S
Registered	2026-06-25
Expires	2027-06-24 (248d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

45ms

43ms

AAAA

31ms

TXT

188ms

CAA

41ms

HTTPS

51ms

TLSA

62ms

SOA

0ms

MTA-STS

59ms

DNSSEC

76ms

SRV

63ms

Total

593ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 18:29:31	2042ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-26 16:54:55 shown	593ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-26 09:33:41	709ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-25 12:53:52	614ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-24 12:52:21	1392ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 14:48:33	2383ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 10:04:30	1995ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-26 08:33:13	791ms	2 NS 2 A 2 MX	🔓 Insecure