arnholst.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 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.63.87.106	43200s	—	AS3292	TDC Holding A/S	87.62.0.0/15	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	arnholst-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca09::1 2a01:111:f403:ca09::5 2a01:111:f403:ca09::d 52.101.68.18 52.101.68.8 52.101.73.145 52.101.73.28	mail-db7pr03cu00401.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 52.98.154.136

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 84ms

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

📝 TXT Records2 records 208ms

TXT Record
MS=ms78404452
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (arnholst.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)

🔐 DNSSEC116ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081101
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

51ms

MX

46ms

AAAA

55ms

TXT

208ms

CAA

48ms

HTTPS

65ms

TLSA

377ms

SOA

0ms

MTA-STS

100ms

DNSSEC

116ms

SRV

84ms

Total

1032ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 09:03:28	1032ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 05:22:35	17391ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 00:50:28	4058ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 05:12:02	1855ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 15:59:52	5999ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 14:31:56	1176ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 13:40:18	940ms	2 NS 1 A 1 MX	🔒 Secure	View