holterosendahl.dk DNS records

🖥️ Nameservers2 records 66ms

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 93ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.93	3600s	webcluster1.webpod13-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 77ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	holterosendahl-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::8 2a01:111:f403:ca09::a 2a01:111:f403:ca09::b 52.101.68.0 52.101.68.10 52.101.73.155 52.101.73.30	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-am7pr05cu00306.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

🔷 AAAA Records (IPv6)1 records 153ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10b:ec:bc88:db25:22a4	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 331ms

TXT Record
_dmarc.holterosendahl.dk v=DMARC1; p=quarantine
v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.com -all

✉️ SPF

Policy	Record (holterosendahl.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk include:spf.simply.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)

🔐 DNSSEC280ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082801
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

66ms

A

93ms

MX

77ms

AAAA

153ms

TXT

331ms

CAA

122ms

HTTPS

90ms

TLSA

379ms

SOA

0ms

MTA-STS

197ms

DNSSEC

280ms

SRV

198ms

Total

1470ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 10:13:00	1470ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 03:12:49	2437ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-21 03:01:20	2453ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-07 21:27:50	5694ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-30 13:36:03	9229ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 13:03:44	973ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 06:05:19	742ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-22 22:36:48	2263ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 16:07:37	1140ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 14:24:04	2007ms	2 NS 1 A 1 MX	🔒 Secure	View