flt.dk

📜 Historical scan 2026-06-26 20:12:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

flt.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 18 March 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.221.124.121 is hosted by CoMaSys ApS (AS51377) in Denmark. Mail is handled by flt-dk.v-v1.mx.microsoft. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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#

4 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.221.124.121	3600s	wp01.comasys.dk	AS51377	CoMaSys ApS	193.221.124.0/24	🇩🇰 Denmark	—

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	flt-dk.v-v1.mx.microsoft	2a01:111:f403:ca04::2 2a01:111:f403:ca04::a 2a01:111:f403:ca09::3 2a01:111:f403:ca09::c 52.101.68.21 52.101.68.25 52.101.68.32 52.101.73.8	mail-du2pr03cu00102.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am0pr04cu00500.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

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 140ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_spf.comasys.dk ~all

✉️ SPF#

Policy	Record (flt.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:_spf.comasys.dk ~all

📨 DMARC#

Policy	Record (_dmarc.flt.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#

latest probe, not this scan · checked 2026-10-13 11:33:46

www	193.221.124.121 (AS51377) (address records, no CNAME)
www vs bare domain	Same network flt.dk: 193.221.124.121 (AS51377) www.flt.dk: 193.221.124.121 (AS51377)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

6 records 68ms

Service / Owner	Type	Cert association
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	6EBFF927297A5B3AAF5EAE672252C36A…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	C495D9E40F7E625BE22F83CC64305182…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	5F88694615E4C61686E106B84C3338C6…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	A6C267923B26A4A9617EDA73D8DB4FBC…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	38D895F5105BC2545822C17A2444F4B0…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	133086C7B822371A4A3304F1661A7880…

🔐 DNSSEC#

52ms

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

🏷️ SOA#

31ms

Field	Value
Serial	2025040704
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-14 05:58:52

Field	Value
Registrar	Simply.com A/S
Registered	1999-03-18
Expires	2027-03-31 (165d)

🔗 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#

35ms

30ms

38ms

AAAA

30ms

TXT

140ms

CAA

31ms

HTTPS

40ms

TLSA

68ms

SOA

31ms

MTA-STS

39ms

DNSSEC

52ms

SRV

37ms

Total

737ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 11:33:46	446ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-02 02:59:40	899ms	4 NS 1 A 1 MX	🔒 Secure
2026-08-26 14:44:36	796ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-26 20:12:50 shown	737ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 19:05:21	2357ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 17:34:43	688ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-23 12:01:10	894ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 09:52:48	878ms	4 NS 1 A 1 MX	🔒 Secure