sjtfirma.dk

📜 Historical scan 2026-06-17 11:37:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sjtfirma.dk is a .dk domain served by 2 nameservers (ns1.dnsserver.dk, ns2.dnsserver.dk). It was registered on 19 February 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.8.37.82 is hosted by Norlys Telco A/S (AS3308) in Denmark. Mail is handled by mx.stackmail.com. The zone is DNSSEC-signed and validates, has no 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#

2 records 57ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnsserver.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.dnsserver.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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.82	—	—	AS3308	Norlys Telco A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mx.stackmail.com	185.151.28.67	mx.stackmail.com	AS48254 20i Limited

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 106ms

TXT Record
v=spf1 a include:spf.stackmail.com a mx -all

✉️ SPF#

Policy	Record (sjtfirma.dk)
-all (hard fail)	v=spf1 a include:spf.stackmail.com a mx -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-15 07:10:37

www	104.21.40.254 172.67.141.14 2606:4700:3033::6815:28fe 2606:4700:3033::ac43:8d0e (AS13335) (address records, no CNAME)
www vs bare domain	Same network sjtfirma.dk: 104.21.40.254 172.67.141.14 2606:4700:3033::6815:28fe 2606:4700:3033::ac43:8d0e (AS13335) www.sjtfirma.dk: 104.21.40.254 172.67.141.14 2606:4700:3033::6815:28fe 2606:4700:3033::ac43:8d0e (AS13335)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u114990284.wl035.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u114990284.wl035.sendgrid.net	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: 4/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

96ms

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

🏷️ SOA#

62ms

Field	Value
Serial	2026011901
Primary NS (MNAME)	ns1.dnsserver.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-09 08:39:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-02-19
Expires	2027-02-28 (131d)

📋 WHOIS#

⏱️ Lookup Timing#

57ms

41ms

53ms

AAAA

47ms

TXT

106ms

CAA

78ms

HTTPS

46ms

TLSA

2031ms

SOA

62ms

MTA-STS

49ms

DNSSEC

96ms

SRV

0ms

Total

2424ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 07:51:21	557ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 14:17:05	2395ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 11:12:07	2216ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 18:49:47	955ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 11:37:54 shown	2424ms	2 NS 1 A 1 MX	🔒 Secure