dc-system.dk

📜 Historical scan 2026-09-14 01:40:52 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dc-system.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.149.228.17 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by dcsystem-dk0e.v-v1.mx.microsoft. 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 52ms

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 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.149.228.17	600s	web07.tigermedia.eu	AS48854	team.blue Denmark A/S	185.149.228.0/24	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	dcsystem-dk0e.v-v1.mx.microsoft	2a01:111:f403:ca04::4 2a01:111:f403:ca04::6 2a01:111:f403:ca04::8 2a01:111:f403:ca09::a 52.101.103.36 52.101.181.153 52.101.68.15 52.101.68.36	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db5pr02cu00104.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 → 40.104.116.24
🔶 Autoconfig	185.149.228.17

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 65ms

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

📝 TXT Records#

1 records 166ms

TXT Record
v=spf1 ip4:185.170.133.74 include:spf.protection.outlook.com include:spf.tigermedia.eu -all

✉️ SPF#

Policy	Record (dc-system.dk)
-all (hard fail)	v=spf1 ip4:185.170.133.74 include:spf.protection.outlook.com include:spf.tigermedia.eu -all

📨 DMARC#

Policy	Record (_dmarc.dc-system.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc_agg@vali.email;

📬 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 2026-10-01 07:20:50

www	Address record (no CNAME)
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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

4 records 90ms

Service / Owner	Type	Cert association
SMTP _25._tcp.dcsystem-dk0e.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.dcsystem-dk0e.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.dcsystem-dk0e.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.dcsystem-dk0e.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…

🔐 DNSSEC#

85ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025101400
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

52ms

54ms

41ms

AAAA

37ms

TXT

166ms

CAA

55ms

HTTPS

63ms

TLSA

90ms

SOA

0ms

MTA-STS

54ms

DNSSEC

85ms

SRV

65ms

Total

810ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 07:20:50	2481ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-14 01:40:52 shown	810ms	4 NS 1 A 1 MX	🔒 Secure
2026-07-03 08:28:12	891ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-28 08:28:09	963ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-21 13:11:00	707ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-17 01:15:48	619ms	4 NS 1 A 1 MX	🔒 Secure