mtdc.dk

📜 Historical scan 2026-06-23 15:01:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mtdc.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 31 October 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.156.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.spamfilter.cc, mx2.spamfilter.cc and 1 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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#

4 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 82ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.17	3600s	nt34.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

3 records 82ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com puertomarket.tempurl.host	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
10	3600s	mx2.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com puertomarket.tempurl.host	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
20	3600s	mx3.spamfilter.cc	2001:19f0:5001:1b34:5400:3ff:fe0e:a8b5 95.179.139.219 95.179.218.56	— 95.179.139.219.vultrusercontent.com puertomarket.tempurl.host	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	93.191.156.17
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 92ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

1 records 204ms

TXT Record
v=spf1 include:_include.mxhotel.dk -all

✉️ SPF#

Policy	Record (mtdc.dk)
-all (hard fail)	v=spf1 include:_include.mxhotel.dk -all

📨 DMARC#

Policy	Record (_dmarc.mtdc.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; rua=mailto:alvn@mtdc.dk; ruf=mailto:alvn@mtdc.dk

📬 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 2026-10-08 11:50:18

www	93.191.156.17 (AS48854) (address records, no CNAME)
www vs bare domain	Same network mtdc.dk: 93.191.156.17 (AS48854) www.mtdc.dk: 93.191.156.17 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

error include:_include.mxhotel.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

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

🔐 DNSSEC#

194ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

41ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-16 14:20:06

Field	Value
Registrar	Simply.com A/S
Registered	2005-10-31
Expires	2027-07-31 (284d)

🔗 Same registrant#

2 domains

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
alvn.dk	Simply.com A/S
fitnessmk.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

32ms

82ms

AAAA

81ms

TXT

204ms

CAA

93ms

HTTPS

81ms

TLSA

107ms

SOA

41ms

MTA-STS

47ms

DNSSEC

194ms

SRV

92ms

Total

904ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 07:35:31	978ms	4 NS 1 A 3 MX	🔒 Secure
2026-09-27 12:10:44	2293ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-27 17:52:31	954ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-23 15:01:00 shown	904ms	4 NS 1 A 3 MX	🔒 Secure
2026-06-17 13:22:56	692ms	4 NS 1 A 3 MX	🔒 Secure