serious.dk

📜 Historical scan 2026-08-17 08:43:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

serious.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 June 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.153 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by serious-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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 236ms

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 95ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.153	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 233ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	serious-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::6 2a01:111:f403:ca09::9 2a01:111:f403:ca09::b 52.101.68.0 52.101.68.16 52.101.68.3 52.101.68.32	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db3pr0202cu00200.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	46.30.213.153

🔷 AAAA Records (IPv6)#

1 records 234ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:cd:8f18:4e3a:f0b1	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 488ms

TXT Record
lucidlink-verification=BGSNRK6X6PFB5H45JCZ53XFRVM
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (serious.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#

latest probe, not this scan · checked 2026-10-17 05:06:43

www	46.30.213.147 2a02:2350:5:10c:9a:7c78:be53:686d (AS51468) (address records, no CNAME)
www vs bare domain	Same network serious.dk: 46.30.213.147 2a02:2350:5:10c:9a:7c78:be53:686d (AS51468) www.serious.dk: 46.30.213.147 2a02:2350:5:10c:9a:7c78:be53:686d (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#

359ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026081703
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 13:43:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1996-06-13
Expires	2027-06-30 (254d)

🔗 Same registrant#

1 domain

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
dubbing.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

236ms

95ms

233ms

AAAA

234ms

TXT

488ms

CAA

191ms

HTTPS

238ms

TLSA

662ms

SOA

0ms

MTA-STS

260ms

DNSSEC

359ms

SRV

257ms

Total

4425ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 05:06:43	1185ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 08:53:49	749ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 17:53:51	794ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 16:47:10	935ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 16:12:48	1913ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-07 07:16:16	3408ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-01 20:43:22	1056ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-18 22:38:16	10918ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 08:43:14 shown	4425ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 23:31:57	1361ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 03:03:13	920ms	2 NS 1 A 1 MX	🔒 Secure