flt.dk

📜 Historical scan 2026-08-26 14:44:36 · ← 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 49ms

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 36ms

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 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	flt-dk.v-v1.mx.microsoft	2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca09::4 2a01:111:f403:ca48::a 52.101.103.137 52.101.181.153 52.101.68.10 52.101.73.19	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-as8pr04cu00803.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 129ms

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#

4 records 74ms

Service / Owner	Type	Cert association
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	803F7447CC75B208DBCA042346F5D8DF…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	C1AD7778796D20BCA65C889A26550211…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-EE · SPKI · SHA-256	54883CC5F1849331E6BF5002C3129D20…
SMTP _25._tcp.flt-dk.v-v1.mx.microsoft	DANE-TA · Full cert · SHA-256	EA7A25255D111FC3CE4CB8FABE3ADF9C…

🔐 DNSSEC#

93ms

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

🏷️ SOA#

0ms

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 (164d)

🔗 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#

49ms

36ms

47ms

AAAA

33ms

TXT

129ms

CAA

51ms

HTTPS

66ms

TLSA

74ms

SOA

0ms

MTA-STS

60ms

DNSSEC

93ms

SRV

70ms

Total

796ms

🕐 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 shown	796ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-26 20:12:50	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