kaerstrup.dk DNS records

🖥️ Nameservers2 records 124ms

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 122ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.162	3600s	webcluster2.webpod14-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 128ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	kaerstrup-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::4 2a01:111:f403:ca09::d 2a01:111:f403:ca48::c 52.101.68.29 52.101.68.3 52.101.73.153 52.101.73.19	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as8pr04cu00803.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 128ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10c:8017:113c:7d81:7c40	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 440ms

TXT Record
MS=ms52365801
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (kaerstrup.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)

🔐 DNSSEC302ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082401
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

124ms

A

122ms

MX

128ms

AAAA

128ms

TXT

440ms

CAA

126ms

HTTPS

120ms

TLSA

359ms

SOA

0ms

MTA-STS

167ms

DNSSEC

302ms

SRV

165ms

Total

2060ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 01:53:47	2060ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 04:51:05	5017ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 14:00:55	2221ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 21:06:41	10462ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 11:49:18	1849ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 23:42:56	870ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 10:59:12	3161ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-22 22:21:13	936ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-22 16:44:29	1697ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 08:14:46	968ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-19 22:05:08	1531ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 20:49:25	1320ms	2 NS 1 A 1 MX	🔒 Secure	View