arenstorff-co.dk DNS records

🖥️ Nameservers2 records 199ms

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 216ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.137	3600s	webcluster1.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 216ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	arenstorffco-dk02e.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca04::c 2a01:111:f403:ca04::d 2a01:111:f403:ca09::e 52.101.68.15 52.101.68.32 52.101.68.8 52.101.73.6	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du0pr03cu00100.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 → 40.104.116.40

🔷 AAAA Records (IPv6)1 records 208ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:4a:be77:75b:32ad	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 464ms

TXT Record
MS=ms68766992
v=spf1 include:_custspf.one.com include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (arenstorff-co.dk)
-all (hard fail)	v=spf1 include:_custspf.one.com 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)

🔐 DNSSEC372ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081501
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

199ms

A

216ms

MX

216ms

AAAA

208ms

TXT

464ms

CAA

237ms

HTTPS

177ms

TLSA

1226ms

SOA

0ms

MTA-STS

278ms

DNSSEC

372ms

SRV

313ms

Total

4922ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-15 16:16:44	4922ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-13 15:43:38	3142ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 03:50:54	3148ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-16 05:37:36	3425ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 05:38:09	5180ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 12:28:44	2725ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 06:14:40	1263ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 00:36:49	1261ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 04:18:42	927ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 13:39:19	845ms	2 NS 1 A 1 MX	🔒 Secure	View