polarhus.dk

📜 Historical scan 2026-09-10 21:17:58 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

polarhus.dk is a .dk domain served by 2 nameservers (april.ns.cloudflare.com, owen.ns.cloudflare.com). It was registered on 11 July 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.61.138 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by polarhus-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
april.ns.cloudflare.com	108.162.192.66 172.64.32.66 173.245.58.66 2606:4700:50::adf5:3a42 2803:f800:50::6ca2:c042 2a06:98c1:50::ac40:2042	april.ns.cloudflare.com april.ns.cloudflare.com april.ns.cloudflare.com april.ns.cloudflare.com april.ns.cloudflare.com april.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
owen.ns.cloudflare.com	108.162.193.219 172.64.33.219 173.245.59.219 2606:4700:58::adf5:3bdb 2803:f800:50::6ca2:c1db 2a06:98c1:50::ac40:21db	owen.ns.cloudflare.com owen.ns.cloudflare.com owen.ns.cloudflare.com owen.ns.cloudflare.com owen.ns.cloudflare.com owen.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.61.138	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.210.247	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	polarhus-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca09::24 2a01:111:f403:ca21::8 2a01:111:f403:ca21::a 52.101.185.114 52.101.209.153 52.101.73.123 52.101.91.159	mail-db5pr02cu00100.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-matpr04cu00207.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 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:d2f7	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:3d8a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 35ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.61.138,172.67.210.247 ech=AEX+DQBBVAAgACCApOOHcJCMOPawZVUn+juo1PIpFsX50Vr+ykHKXQZ6ZQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:d2f7,2606:4700:3036::6815:3d8a

📝 TXT Records#

4 records 209ms

TXT Record
google-site-verification=X_Jejy7wMB0ku-jHi-DSzIdSxFJ7Yp00nIc3KumE6yM
knowbe4-site-verification=b8e8f692e035ecb21314ccdb79242e42
MS=ms59215795
v=spf1 include:143522491.spf02.hubspotemail.net include:spf.protection.outlook.com include:_spf.mailersend.net include:_spf.mlsend.com include:_spf.google.com -all

✉️ SPF#

Policy	Record (polarhus.dk)
-all (hard fail)	v=spf1 include:143522491.spf02.hubspotemail.net include:spf.protection.outlook.com include:_spf.mailersend.net include:_spf.mlsend.com include:_spf.google.com -all

📨 DMARC#

Policy	Record (_dmarc.polarhus.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@polhus.com; ruf=mailto:dmarc@polhus.com; fo=1

📬 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-08 13:28:01

www	104.21.61.138 172.67.210.247 2606:4700:3030::ac43:d2f7 2606:4700:3036::6815:3d8a (AS13335) (address records, no CNAME)
www vs bare domain	Same network polarhus.dk: 104.21.61.138 172.67.210.247 2606:4700:3030::ac43:d2f7 2606:4700:3036::6815:3d8a (AS13335) www.polarhus.dk: 104.21.61.138 172.67.210.247 2606:4700:3030::ac43:d2f7 2606:4700:3036::6815:3d8a (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-polarhus-dk._domainkey.azgartenhausgmbh.onmicrosoft.com	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

123ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2414434910
Primary NS (MNAME)	april.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-04 21:58:30

Field	Value
Registrar	Abion AB
Registered	2019-07-11
Expires	2027-07-31 (284d)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

48ms

40ms

AAAA

46ms

TXT

209ms

CAA

35ms

HTTPS

35ms

TLSA

712ms

SOA

0ms

MTA-STS

63ms

DNSSEC

123ms

SRV

82ms

Total

5275ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 09:13:49	1113ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-22 19:43:19	1245ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 05:41:26	1985ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-10 21:17:58 shown	5275ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 11:04:37	1930ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-17 09:26:23	4907ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-24 03:31:13	1573ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-23 03:15:44	1425ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-09 06:24:34	1658ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-29 16:47:42	997ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 16:38:57	741ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 07:12:21	1114ms	2 NS 2 A 1 MX	🔓 Insecure