nucleus.dk

📜 Historical scan 2026-08-13 22:09:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nucleus.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.217.249 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by nucleus-dk.mail.protection.outlook.com. 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#

2 records 45ms

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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.217.249	600s	vps.simpledigital.dk	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	nucleus-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca04::f 2a01:111:f403:ca09::3 2a01:111:f403:ca09::7 52.101.68.21 52.101.73.15 52.101.73.2 52.101.73.26	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as9pr05cu01302.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 → 40.104.116.56
🔶 Autoconfig	178.20.217.249

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 2043ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

1 records 181ms

TXT Record
v=spf1 mx a ip4:93.90.117.1/24 ip4:93.90.115.1/24 ip4:87.116.38.186 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

✉️ SPF#

Policy	Record (nucleus.dk)
-all (hard fail)	v=spf1 mx a ip4:93.90.117.1/24 ip4:93.90.115.1/24 ip4:87.116.38.186 include:spf.protection.outlook.com include:web.shared.mysmtp.com -all

📨 DMARC#

Policy	Record (_dmarc.nucleus.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-10-13 02:05:08

www	185.130.190.68 (AS210939) (address records, no CNAME)
www vs bare domain	Same network nucleus.dk: 185.130.190.68 (AS210939) www.nucleus.dk: 185.130.190.68 (AS210939)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
mail	—	RSA · ~1024 bit below 2048 bit
selector1	selector1-nucleus-dk._domainkey.nucleusforlag.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: 7/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

70ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2026032401
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 2026-10-13 02:22:44

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-02-16
Expires	2027-03-31 (164d)

🔗 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
bioteknologibogen.dk	Punktum dk A/S (direct)
biu.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

45ms

40ms

33ms

AAAA

39ms

TXT

181ms

CAA

36ms

HTTPS

34ms

TLSA

648ms

SOA

45ms

MTA-STS

68ms

DNSSEC

70ms

SRV

2043ms

Total

7551ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 02:05:08	1057ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-04 10:15:00	987ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 22:22:24	1100ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-22 01:14:37	1640ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-17 10:52:05	2039ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 20:24:11	829ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-13 22:09:57 shown	7551ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 01:03:22	1238ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 11:08:37	1113ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 01:01:00	1173ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 14:39:47	1401ms	2 NS 1 A 1 MX	🔒 Secure