fo.dk

📜 Historical scan 2026-08-16 20:25:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fo.dk is a .dk domain served by 2 nameservers (aarav.ns.cloudflare.com, addilyn.ns.cloudflare.com). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.74.226 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by fo-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 42ms

Nameserver	IP addresses	PTR	ASN / ISP
aarav.ns.cloudflare.com	108.162.195.60 162.159.44.60 172.64.35.60 2606:4700:58::a29f:2c3c 2803:f800:50::6ca2:c33c 2a06:98c1:50::ac40:233c	aarav.ns.cloudflare.com aarav.ns.cloudflare.com aarav.ns.cloudflare.com aarav.ns.cloudflare.com aarav.ns.cloudflare.com aarav.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
addilyn.ns.cloudflare.com	108.162.194.217 162.159.38.217 172.64.34.217 2606:4700:50::a29f:26d9 2803:f800:50::6ca2:c2d9 2a06:98c1:50::ac40:22d9	addilyn.ns.cloudflare.com addilyn.ns.cloudflare.com addilyn.ns.cloudflare.com addilyn.ns.cloudflare.com addilyn.ns.cloudflare.com addilyn.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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.74.226	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.164.14	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 24ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	fo-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::e 2a01:111:f403:ca09::2 2a01:111:f403:ca09::5 52.101.68.25 52.101.68.29 52.101.68.39 52.101.73.24	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 40.98.16.99

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:4ae2	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:a40e	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=104.21.74.226,172.67.164.14 ech=AEX+DQBBOAAgACDfu94F1GyokGvFS46+laEzSLSkAtA8vJmS+1HQDrV3OwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4ae2,2606:4700:3037::ac43:a40e

🔌 SRV Records#

1 records 113ms

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

📝 TXT Records#

1 records 8235ms

TXT Record
v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:sendgrid.net ip4:86.58.157.151 include:spf.protection.outlook.com include:spf.mailjet.com a:mailfence.ngoweb.dk -all

✉️ SPF#

Policy	Record (fo.dk)
-all (hard fail)	v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:sendgrid.net ip4:86.58.157.151 include:spf.protection.outlook.com include:spf.mailjet.com a:mailfence.ngoweb.dk -all

📨 DMARC#

Policy	Record (_dmarc.fo.dk)
p=none (monitor only)	v=DMARC1;p=none;

📬 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 2026-10-11 00:47:21

www	104.21.74.226 172.67.164.14 2606:4700:3032::6815:4ae2 2606:4700:3037::ac43:a40e (AS13335) (address records, no CNAME)
www vs bare domain	Same network fo.dk: 104.21.74.226 172.67.164.14 2606:4700:3032::6815:4ae2 2606:4700:3037::ac43:a40e (AS13335) www.fo.dk: 104.21.74.226 172.67.164.14 2606:4700:3032::6815:4ae2 2606:4700:3037::ac43:a40e (AS13335)
Wildcard	No

✍️ DKIM keys#

4 found

Selector	CNAME	Key
s1	s1.domainkey.u7665582.wl083.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u7665582.wl083.sendgrid.net	RSA · ~1024 bit below 2048 bit
selector1	selector1-gladsaxe-fo-dk._domainkey.fogladsaxe.q-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-gladsaxe-fo-dk._domainkey.fogladsaxe.q-v1.dkim.mail.microsoft	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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.fo.dk	GOwwgcO__k-cAFpoAocHuUbc1ytwWO2LMm4zNalPq7E
TXT	_acme-challenge.fo.dk	hcRSP82JKRFkclvX1yzcqqMwkBgugZ_tMNL2GWhoy0s

🔗 TLSA / DANE#

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

🔐 DNSSEC#

112ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2412379142
Primary NS (MNAME)	aarav.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 12:29:03

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-02-16
Expires	2027-03-31 (165d)

📋 WHOIS#

⏱️ Lookup Timing#

42ms

33ms

24ms

AAAA

33ms

TXT

8235ms

CAA

37ms

HTTPS

41ms

TLSA

148ms

SOA

0ms

MTA-STS

68ms

DNSSEC

112ms

SRV

113ms

Total

9377ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 11:46:13	960ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-02 11:44:26	1028ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 22:24:10	1287ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-10 17:08:38	2407ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-22 02:59:13	4082ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-18 00:29:12	1978ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-16 20:25:14 shown	9377ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-07 00:48:38	2299ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 12:04:38	1868ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-19 23:26:07	3756ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 09:27:18	887ms	2 NS 2 A 1 MX	🔓 Insecure