sivertsen.dk DNS records

🖥️ Nameservers2 records 123ms

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 119ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.136.209	43200s	5.103.136.209.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Frederiksberg

📧 MX Records1 records 83ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sivertsen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca09::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::8 52.101.68.16 52.101.73.16 52.101.73.2 52.101.73.6	mail-dbapr03cu00100.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am6pr04cu00306.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 253ms

TXT Record
MS=ms17437896
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (sivertsen.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

🔗 TLSA / DANE

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

🔐 DNSSEC177ms

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

🏷️ SOA80ms

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

123ms

A

119ms

MX

83ms

AAAA

111ms

TXT

253ms

CAA

80ms

HTTPS

82ms

TLSA

323ms

SOA

80ms

MTA-STS

130ms

DNSSEC

177ms

SRV

130ms

Total

5561ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-16 05:40:03	5561ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 20:16:16	758ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 22:42:14	658ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 13:11:08	1646ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 00:50:37	934ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 17:14:29	1625ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 19:36:58	956ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 04:25:46	2880ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:39:49	2243ms	2 NS 1 A 1 MX	🔒 Secure	View