frustokholm.dk

Records from scan: 2026-09-30 15:31:00 · 1613ms total · last checked 2026-10-18 08:56 (unchanged)

⬇ 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 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, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 37ms

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 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.55.68	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.170.157	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	frustokholm-dk.mail.protection.outlook.com	2a01:111:f403:ca09::22 2a01:111:f403:ca09::24 2a01:111:f403:ca21::e 2a01:111:f403:ca38::a 52.101.68.15 52.101.68.8 52.101.91.156 52.101.91.162	mail-am7pr02cu00302.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-maspr04cu00104.inbound.protection.outlook.com mail-matpr04cu00302.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 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:aa9d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:3744	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 41ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.55.68,172.67.170.157 ech=AEX+DQBBigAgACClcPRSYIi9pRSXEYI2Mp1rDDKFgCgesWfIc4Sj2ogUFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:aa9d,2606:4700:3034::6815:3744

🔌 SRV Records#

1 records 70ms

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

📝 TXT Records#

2 records 190ms

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#

Policy	Record (_dmarc.frustokholm.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:jbf@dudez.dk

📬 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#

checked 2026-10-18 08:56:09

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#

61ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2415098499
Primary NS (MNAME)	elsa.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

37ms

46ms

41ms

AAAA

37ms

TXT

190ms

CAA

37ms

HTTPS

41ms

TLSA

597ms

SOA

34ms

MTA-STS

47ms

DNSSEC

61ms

SRV

70ms

Total

1613ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 15:31:00 shown	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	1124ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 09:40:56	915ms	2 NS 2 A 1 MX	🔓 Insecure