zierolsen.dk DNS records

🖥️ Nameservers2 records 39ms

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
46.30.215.126	3600s	webcluster2.webpod16-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	zierolsen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca09::9 2a01:111:f403:ca09::d 2a01:111:f403:ca09::f 52.101.68.10 52.101.73.1 52.101.73.22 52.101.73.24	mail-db4pr02cu00307.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-as8pr05cu00300.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	46.30.215.126

🔷 AAAA Records (IPv6)1 records 41ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:111:80f5:a83c:80ef:eee4	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 Records2 records 183ms

TXT Record
MS=ms91902845
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (zierolsen.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)

🔐 DNSSEC92ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081401
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

39ms

A

43ms

MX

56ms

AAAA

41ms

TXT

183ms

CAA

53ms

HTTPS

47ms

TLSA

768ms

SOA

0ms

MTA-STS

55ms

DNSSEC

92ms

SRV

78ms

Total

1343ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 07:19:43	1343ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 16:30:56	4690ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-13 03:20:34	5227ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-11 13:23:34	2096ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 15:02:59	1325ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 19:04:02	1173ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 06:34:52	2801ms	2 NS 1 A 1 MX	🔒 Secure	View