cem.dk

Records from scan: 2026-10-15 12:51:36 · 1891ms total · last checked 2026-10-17 18:57 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cem.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 27 October 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.85 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by cem-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 124ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 104ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.215.85	3600s	webcluster1.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 73ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	cem-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::24 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::8 52.101.68.10 52.101.73.123 52.101.73.126 52.101.73.153	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am8pr83cu00106.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

1 records 120ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:111:aa:6039:538c:36f7	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 287ms

TXT Record
MS=ms38587323
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

checked 2026-10-15 12:51:36

www	46.30.215.85 2a02:2350:5:111:aa:6039:538c:36f7 (AS51468) (address records, no CNAME)
www vs bare domain	Same network cem.dk: 46.30.215.85 2a02:2350:5:111:aa:6039:538c:36f7 (AS51468) www.cem.dk: 46.30.215.85 2a02:2350:5:111:aa:6039:538c:36f7 (AS51468)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

187ms

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

🏷️ SOA#

81ms

Field	Value
Serial	2026101402
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-14 09:52:41

Field	Value
Registrar	ONE.COM A/S
Registered	1999-10-27
Expires	2026-12-31 (74d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

124ms

104ms

73ms

AAAA

120ms

TXT

287ms

CAA

93ms

HTTPS

95ms

TLSA

1067ms

SOA

81ms

MTA-STS

127ms

DNSSEC

187ms

SRV

231ms

Total

1891ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 12:51:36 shown	1891ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 09:33:55	1158ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 00:05:38	1407ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-19 03:33:37	1084ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-19 02:30:05	9094ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 21:50:17	2735ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-14 14:34:06	3906ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 17:51:46	8594ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-31 18:35:07	5783ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-19 02:49:09	1254ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 12:21:27	2216ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 00:36:24	1070ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:16:53	9574ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:08:50	1752ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:08:13	660ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:01:38	545ms	2 NS 1 A 1 MX	🔒 Secure