holckenhavn.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
adel.ns.cloudflare.com	108.162.192.55 172.64.32.55 173.245.58.55 2606:4700:50::adf5:3a37 2803:f800:50::6ca2:c037 2a06:98c1:50::ac40:2037	adel.ns.cloudflare.com adel.ns.cloudflare.com adel.ns.cloudflare.com adel.ns.cloudflare.com adel.ns.cloudflare.com adel.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
aiden.ns.cloudflare.com	108.162.193.55 172.64.33.55 173.245.59.55 2606:4700:58::adf5:3b37 2803:f800:50::6ca2:c137 2a06:98c1:50::ac40:2137	aiden.ns.cloudflare.com aiden.ns.cloudflare.com aiden.ns.cloudflare.com aiden.ns.cloudflare.com aiden.ns.cloudflare.com aiden.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.15.71	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.161.235	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	holckenhavn-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::6 2a01:111:f403:ca04::a 2a01:111:f403:ca09::4 52.101.68.25 52.101.68.36 52.101.73.1 52.101.73.4	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am3pr04cu00501.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 → 40.104.116.56

🔷 AAAA Records (IPv6)2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:a1eb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:f47	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 24ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.15.71,172.67.161.235 ech=AEX+DQBB/gAgACBj3ZQaazmR4RDKgbRkFbDDCXC7k/q2zBXwpGrN2qG/LQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:a1eb,2606:4700:3037::6815:f47

🔌 SRV Records1 records 74ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records2 records 136ms

TXT Record
MS=ms31180906
v=spf1 mx a a:mail.holckenhavn.dk a:fw01.holckenhavn.dk include:spf.protection.outlook.com include:amazonses.com -all

✉️ SPF

Policy	Record (holckenhavn.dk)
-all (hard fail)	v=spf1 mx a a:mail.holckenhavn.dk a:fw01.holckenhavn.dk include:spf.protection.outlook.com include:amazonses.com -all

📨 DMARC

Policy	Record (_dmarc.holckenhavn.dk)
p=reject	v=DMARC1; p=reject; fo=1; pct=100

📬 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)

🔐 DNSSEC96ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2413488861
Primary NS (MNAME)	adel.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

29ms

MX

35ms

AAAA

33ms

TXT

136ms

CAA

34ms

HTTPS

24ms

TLSA

407ms

SOA

0ms

MTA-STS

46ms

DNSSEC

96ms

SRV

74ms

Total

937ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 17:14:11	937ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-28 21:12:50	1656ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-01 08:21:44	1539ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-28 08:04:33	2576ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-25 22:51:01	2310ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-25 05:02:39	1608ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-25 03:58:26	3060ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-20 02:53:16	2840ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 22:06:05	3872ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-17 13:16:34	271ms	0 NS 0 A 0 MX	❓ Unknown	View