sjoerup.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 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.202	3600s	vm0521.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records2 records 57ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	7200s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
20	7200s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 82ms

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

📝 TXT Records1 records 185ms

TXT Record
v=spf1 ip4:94.231.103.98 ip4:94.137.138.138 ip4:185.21.41.202 ip4:94.231.106.216 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.com include:spf-de.emailsignatures365.com include:outbound.centerasecurity.dk include:_spf.centerasecurity.dk -all

✉️ SPF

Policy	Record (sjoerup.dk)
-all (hard fail)	v=spf1 ip4:94.231.103.98 ip4:94.137.138.138 ip4:185.21.41.202 ip4:94.231.106.216 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.com include:spf-de.emailsignatures365.com include:outbound.centerasecurity.dk include:_spf.centerasecurity.dk -all

📨 DMARC

Policy	Record (_dmarc.sjoerup.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc@sjoerup.dk;

📬 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 / DANE4 records 67ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…

🔐 DNSSEC88ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080801
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

43ms

MX

57ms

AAAA

44ms

TXT

185ms

CAA

62ms

HTTPS

39ms

TLSA

67ms

SOA

0ms

MTA-STS

63ms

DNSSEC

88ms

SRV

82ms

Total

1203ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-10 19:22:36	1203ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-10 15:19:13	1462ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-06 09:33:08	1049ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-04 07:33:37	3312ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-02 22:04:12	5825ms	2 NS 0 A 0 MX	🔒 Secure	View
2026-06-24 15:59:46	774ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-24 11:24:56	3219ms	2 NS 1 A 2 MX	⚠️ Bogus	View
2026-06-23 00:53:29	914ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 19:59:43	763ms	2 NS 1 A 2 MX	🔒 Secure	View