tek57.dk

📜 Historical scan 2026-06-24 16:39:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tek57.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 3 September 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by tek57.dk. 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#

4 records 93ms

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 112ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.100	600s	dnsforward.simply.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	tek57.dk	94.231.103.100	dnsforward.simply.com	AS48854 team.blue Denmark A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 257ms

TXT Record
v=spf1 a mx -all

✉️ SPF#

Policy	Record (tek57.dk)
-all (hard fail)	v=spf1 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 2026-10-09 03:20:50

www CNAME	tek57.dk (all on tek57.dk) → 85.92.70.220 (AS34282)
www vs bare domain	Same network tek57.dk: 85.92.70.220 (AS34282) www.tek57.dk: 85.92.70.220 (AS34282)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

350ms

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

🏷️ SOA#

48ms

Field	Value
Serial	2026021201
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 2026-10-08 15:05:15

Field	Value
Registrar	Simply.com A/S
Registered	2007-09-03
Expires	2027-09-30 (345d)

📋 WHOIS#

⏱️ Lookup Timing#

93ms

112ms

41ms

AAAA

43ms

TXT

257ms

CAA

29ms

HTTPS

42ms

TLSA

48ms

SOA

48ms

MTA-STS

92ms

DNSSEC

350ms

SRV

95ms

Total

777ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-08 19:05:04	4213ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-06 19:34:41	5434ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-02 06:14:04	654ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-24 16:39:45 shown	777ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-18 03:38:11	554ms	4 NS 1 A 1 MX	🔒 Secure