mtsec.dk

📜 Historical scan 2026-09-30 15:30:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mtsec.dk is a .dk domain served by 2 nameservers (pdns03.domaincontrol.com, pdns04.domaincontrol.com). It was registered on 16 April 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 198.185.159.144 is hosted by Squarespace, Inc. (AS53831) in United States. Mail is handled by mtsec-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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#

2 records 73ms

Nameserver	IP addresses	PTR	ASN / ISP
pdns03.domaincontrol.com	2603:5:21f0::33 97.74.111.51	pdns03.domaincontrol.com pdns03.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH
pdns04.domaincontrol.com	173.201.79.51 2603:5:22f0::33	pdns04.domaincontrol.com pdns04.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH

🌍 A Records#

4 records 59ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.185.159.144	600s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	New York
198.185.159.145	600s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	—
198.49.23.144	600s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—
198.49.23.145	600s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 76ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mtsec-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca09::a 2a01:111:f403:ca21::10 2a01:111:f403:ca48::a 52.101.103.137 52.101.68.12 52.101.68.27 52.101.73.153	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-as8pr05cu00401.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	autodiscover.outlook.com → 52.98.154.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 106ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 315ms

TXT Record
v=spf1 include:spf.protection.outlook.com -all
v=verifydomain MS=3515863

✉️ SPF#

Policy	Record (mtsec.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.mtsec.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:mt@mtsec.dk; ruf=mailto:mt@mtsec.dk; sp=reject

📬 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 2026-10-09 23:10:38

www CNAME	ext-sq.squarespace.com (all on squarespace.com) → 198.185.159.144 198.185.159.145 198.49.23.144 198.49.23.145 (AS53831)
www vs bare domain	Same network mtsec.dk: 198.185.159.144 198.185.159.145 198.49.23.144 198.49.23.145 (AS53831) www.mtsec.dk: 198.185.159.144 198.185.159.145 198.49.23.144 198.49.23.145 (AS53831)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-mtsec-dk._domainkey.mtsec.onmicrosoft.com	RSA · ~1024 bit below 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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

88ms

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

🏷️ SOA#

48ms

Field	Value
Serial	2024012402
Primary NS (MNAME)	pdns03.domaincontrol.com
Responsible (RNAME)	dns@jomax.net
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-10 12:47:32

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-04-16
Expires	2027-04-30 (184d)

📋 WHOIS#

⏱️ Lookup Timing#

73ms

59ms

76ms

AAAA

60ms

TXT

315ms

CAA

50ms

HTTPS

54ms

TLSA

606ms

SOA

48ms

MTA-STS

82ms

DNSSEC

88ms

SRV

106ms

Total

1233ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 19:58:50	1031ms	2 NS 4 A 1 MX	🔓 Insecure
2026-09-30 15:30:44 shown	1233ms	2 NS 4 A 1 MX	🔓 Insecure
2026-09-29 17:47:22	1037ms	2 NS 4 A 1 MX	🔓 Insecure
2026-06-20 05:17:20	1075ms	2 NS 4 A 1 MX	🔓 Insecure
2026-06-17 15:28:27	2387ms	2 NS 4 A 1 MX	🔓 Insecure