frustokholm.dk

📜 Historical scan 2026-06-22 11:46:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

frustokholm.dk is a .dk domain served by 2 nameservers (elsa.ns.cloudflare.com, uriah.ns.cloudflare.com). It was registered on 26 December 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.55.68 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by frustokholm-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no 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 56ms

Nameserver	IP addresses	PTR	ASN / ISP
elsa.ns.cloudflare.com	108.162.192.111 172.64.32.111 173.245.58.111 2606:4700:50::adf5:3a6f 2803:f800:50::6ca2:c06f 2a06:98c1:50::ac40:206f	elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com elsa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
uriah.ns.cloudflare.com	108.162.195.194 162.159.44.194 172.64.35.194 2606:4700:58::a29f:2cc2 2803:f800:50::6ca2:c3c2 2a06:98c1:50::ac40:23c2	uriah.ns.cloudflare.com uriah.ns.cloudflare.com uriah.ns.cloudflare.com uriah.ns.cloudflare.com uriah.ns.cloudflare.com uriah.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 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.68	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.170.157	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	frustokholm-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca09::8 52.101.68.0 52.101.68.39 52.101.73.1 52.101.73.4	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db7pr03cu00607.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 → 52.98.252.120

🔷 AAAA Records (IPv6)#

2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:aa9d	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:3744	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 53ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.55.68,172.67.170.157 ech=AEX+DQBBagAgACCsUKlOsVhCGh9310P40ob0NRrfEjWajkWU9QHaCqvXPAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:aa9d,2606:4700:3034::6815:3744

🔌 SRV Records#

1 records 167ms

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

📝 TXT Records#

2 records 225ms

TXT Record
MS=ms60024115
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (frustokholm.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-24 08:34:51

www	104.21.55.68 172.67.170.157 2606:4700:3031::ac43:aa9d 2606:4700:3034::6815:3744 (AS13335) (address records, no CNAME)
www vs bare domain	Same network frustokholm.dk: 104.21.55.68 172.67.170.157 2606:4700:3031::ac43:aa9d 2606:4700:3034::6815:3744 (AS13335) www.frustokholm.dk: 104.21.55.68 172.67.170.157 2606:4700:3031::ac43:aa9d 2606:4700:3034::6815:3744 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

96ms

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

🏷️ SOA#

36ms

Field	Value
Serial	2404722924
Primary NS (MNAME)	elsa.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-21 01:57:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-12-26
Expires	2033-12-31 (2623d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

56ms

38ms

56ms

AAAA

39ms

TXT

225ms

CAA

59ms

HTTPS

53ms

TLSA

214ms

SOA

36ms

MTA-STS

54ms

DNSSEC

96ms

SRV

167ms

Total

1124ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-24 08:34:51	1266ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 15:31:00	1613ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 15:33:55	2095ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 08:43:16	1265ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 08:06:20	3803ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 03:51:48	1231ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-19 08:11:56	1775ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-18 02:43:16	3122ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 11:46:41 shown	1124ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 09:40:56	915ms	2 NS 2 A 1 MX	🔓 Insecure