rosenkrantz.dk DNS records

🖥️ Nameservers2 records 48ms

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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.221.196.247	3600s	—	AS51468	One.com A/S	91.221.196.0/23	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rosenkrantz-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::d 2a01:111:f403:ca09::28 2a01:111:f403:ca09::5 52.101.103.137 52.101.103.36 52.101.73.123 52.101.73.4	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.8

🔷 AAAA Records (IPv6)1 records 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
1234:1234:1234:1234:1234:1234:1234:1234	43200s	—	—	—	—	—	—

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 61ms

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

📝 TXT Records2 records 178ms

TXT Record
MS=ms62436225
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (rosenkrantz.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)

🔐 DNSSEC91ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090101
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

48ms

A

47ms

MX

50ms

AAAA

34ms

TXT

178ms

CAA

50ms

HTTPS

58ms

TLSA

178ms

SOA

0ms

MTA-STS

63ms

DNSSEC

91ms

SRV

61ms

Total

857ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-02 10:26:35	857ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 02:07:38	927ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 22:57:37	1265ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-27 06:04:33	1203ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 02:30:16	9302ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 08:57:45	1067ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 11:16:46	1677ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 21:27:32	787ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 15:36:57	1193ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 23:16:49	719ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 04:52:24	2288ms	2 NS 1 A 1 MX	🔒 Secure	View