nucleus.dk DNS records

🖥️ Nameservers2 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 Records1 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 Records1 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 Records1 records 2043ms

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

📝 TXT Records1 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

🔗 TLSA / DANE

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

🔐 DNSSEC70ms

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

🏷️ SOA45ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

45ms

A

40ms

MX

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
2026-08-13 22:09:57	7551ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 01:03:22	1238ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 11:08:37	1113ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 01:01:00	1173ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 14:39:47	1401ms	2 NS 1 A 1 MX	🔒 Secure	View