certain.dk

📜 Historical scan 2026-06-19 21:52:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

certain.dk is a .dk domain served by 2 nameservers (ns1.dns.services, ns2.dns.services). It was registered on 17 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.210.177.56 is hosted by CoMaSys ApS (AS51377) in Denmark. Mail is handled by mail.certain.dk. The zone is not DNSSEC-signed, 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 52ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dns.services	195.242.131.6 2001:67c:564:ffff::11	ns1.dns.services ns1.dns.services	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.dns.services	2a00:1b18:2:3:3::2 62.69.152.37	ns2.dns.services 37.34-46.152.69.62.in-addr.arpa	AS47527 DLX A/S AS47527 DLX A/S

🌍 A Records#

1 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.210.177.56	43200s	185-210-177-56.comasys.dk	AS51377	CoMaSys ApS	185.210.176.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	86400s	mail.certain.dk	185.210.177.56	185-210-177-56.comasys.dk	AS51377 CoMaSys ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 195ms

TXT Record
v=spf1 +a +mx include:_spf.comasys.dk -all

✉️ SPF#

Policy	Record (certain.dk)
-all (hard fail)	v=spf1 +a +mx include:_spf.comasys.dk -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 2026-10-16 08:58:54

www CNAME	certain.dk (all on certain.dk) → 185.210.177.56 (AS51377)
www vs bare domain	Same network certain.dk: 185.210.177.56 (AS51377) www.certain.dk: 185.210.177.56 (AS51377)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.certain.dk	G65KTaY93MXB1va6xW-hgxlbIyi7cVl8dgQ54RChQTI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

74ms

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

🏷️ SOA#

75ms

Field	Value
Serial	2026042501
Primary NS (MNAME)	ns1.dns.services
Responsible (RNAME)	jimmi@eventconsult.dk
Refresh	10800s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

WHOIS fetched 2026-10-18 01:02:25

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2026-04-17
Expires	2027-04-16 (179d)

🔗 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#

52ms

54ms

46ms

AAAA

40ms

TXT

195ms

CAA

72ms

HTTPS

47ms

TLSA

115ms

SOA

75ms

MTA-STS

49ms

DNSSEC

74ms

SRV

102ms

Total

510ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-27 08:15:56	436ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-05 05:45:25	440ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-25 05:17:21	474ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-03 04:47:04	9631ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-25 16:49:54	588ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 09:05:06	1399ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 22:53:42	985ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 12:33:19	418ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-19 21:52:26 shown	510ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 20:10:47	476ms	2 NS 1 A 1 MX	🔓 Insecure