certain.dk

📜 Historical scan 2026-06-16 20:10:47 · ← 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 72ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dns.services	—	—	—
ns2.dns.services	—	—	—

🌍 A Records#

1 records 71ms

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

📧 MX Records#

1 records 72ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	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 172ms

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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

154ms

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

🏷️ SOA#

79ms

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 (180d)

🔗 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#

72ms

71ms

72ms

AAAA

61ms

TXT

172ms

CAA

73ms

HTTPS

58ms

TLSA

58ms

SOA

79ms

MTA-STS

74ms

DNSSEC

154ms

SRV

0ms

Total

476ms

🕐 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	510ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 20:10:47 shown	476ms	2 NS 1 A 1 MX	🔓 Insecure