fs-c.dk

Records from scan: 2026-09-29 18:09:19 · 580ms total · last checked 2026-10-17 07:24 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

fs-c.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 4 August 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.41.123 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by fsc-dk0e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 29ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.41.123	60s	prolinux6.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	60s	fsc-dk0e.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca09::22 2a01:111:f403:ca09::a 2a01:111:f403:ca21::c 52.101.103.143 52.101.73.126 52.101.73.155 52.101.91.153	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-matpr04cu00101.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 → 40.104.116.40
🔶 Autoconfig	185.21.41.123

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 58ms

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

📝 TXT Records#

1 records 126ms

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

✉️ SPF#

Policy	Record (fs-c.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.fs-c.dk)
p=reject	v=DMARC1; p=reject;

📬 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 2026-10-10 16:35:19

www	185.21.41.123 (AS48854) (address records, no CNAME)
www vs bare domain	Same network fs-c.dk: 185.21.41.123 (AS48854) www.fs-c.dk: 185.21.41.123 (AS48854)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-fsc-dk0e._domainkey.foedevarekonsulenter.onmicrosoft.com	RSA · ~1024 bit below 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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

55ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2026041301
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-05 16:48:40

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2006-08-04
Expires	2027-08-31 (317d)

📋 WHOIS#

⏱️ Lookup Timing#

29ms

51ms

31ms

AAAA

30ms

TXT

126ms

CAA

53ms

HTTPS

27ms

TLSA

171ms

SOA

0ms

MTA-STS

56ms

DNSSEC

55ms

SRV

58ms

Total

580ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 18:09:19 shown	580ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-13 23:59:12	1274ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 19:17:48	1084ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-18 23:34:08	17023ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 18:24:45	973ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 12:00:56	1184ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 10:42:50	1018ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 10:03:42	10487ms	0 NS 0 A 0 MX	❓ Unknown