ert.dk

📜 Historical scan 2026-06-17 08:15:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ert.dk is a .dk domain served by 3 nameservers (ns5.chosting.dk, ns6.chosting.dk, ns7.chosting.dk). It was registered on 3 January 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.31 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by ert.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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#

3 records 25ms

Nameserver	IP addresses	PTR	ASN / ISP
ns5.chosting.dk	—	—	—
ns6.chosting.dk	—	—	—
ns7.chosting.dk	—	—	—

🌍 A Records#

1 records 22ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.216.31	—	server12.chosting.dk	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 22ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	ert.dk	178.20.216.31	server12.chosting.dk	AS21060 Atea A/S

🔷 AAAA Records (IPv6)#

1 records 16ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:7cc0:101:ffff::1:a	—	—	AS21060	Atea A/S	2a01:7cc0:100:0:0:0:0:0/40	🇩🇰 Denmark	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 51ms

TXT Record
v=spf1 ip4:178.20.216.31 include:spf.chosting.dk +a +mx +ip4:178.20.216.32 ~all

✉️ SPF#

Policy	Record (ert.dk)
~all (soft fail)	v=spf1 ip4:178.20.216.31 include:spf.chosting.dk +a +mx +ip4:178.20.216.32 ~all

📨 DMARC#

Policy	Record (_dmarc.ert.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 13:19:04

www CNAME	ert.dk (all on ert.dk) → 178.20.216.31 2a01:7cc0:101:ffff::1:a (AS21060)
www vs bare domain	Same network ert.dk: 178.20.216.31 2a01:7cc0:101:ffff::1:a (AS21060) www.ert.dk: 178.20.216.31 2a01:7cc0:101:ffff::1:a (AS21060)
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: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

146ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

20ms

Field	Value
Serial	2026052600
Primary NS (MNAME)	ns5.chosting.dk
Responsible (RNAME)	logs@chosting.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-20 23:13:14

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-01-03
Expires	2027-03-31 (160d)

🔗 Same registrant#

1 domain

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).

Domain	Registrar
sommerhusetmols.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

25ms

22ms

AAAA

16ms

TXT

51ms

CAA

17ms

HTTPS

16ms

TLSA

92ms

SOA

20ms

MTA-STS

27ms

DNSSEC

146ms

SRV

0ms

Total

779ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 13:19:04	2749ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-01 05:18:27	619ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-04 04:43:47	1122ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-27 07:02:06	976ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-04 10:51:54	4419ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-21 03:10:44	490ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 08:15:41 shown	779ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 08:15:37	2639ms	3 NS 1 A 1 MX	🔓 Insecure