certain.dk

📜 Historical scan 2026-07-03 04:47:04 · ← 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 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 48ms

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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.210.177.56	86400s	185-210-177-56.comasys.dk	AS51377	CoMaSys ApS	185.210.176.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 44ms

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 164ms

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	zkxgue1njnBAt0iMAo2pjFuY7m8ubQgO2MW6HrQVQqM

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9078ms

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

🏷️ SOA#

46ms

Field	Value
Serial	2026062401
Primary NS (MNAME)	ns1.dns.services
Responsible (RNAME)	jimmi@eventconsult.dk
Refresh	10800s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

48ms

40ms

44ms

AAAA

43ms

TXT

164ms

CAA

54ms

HTTPS

41ms

TLSA

58ms

SOA

46ms

MTA-STS

56ms

DNSSEC

9078ms

SRV

46ms

Total

9631ms

🕐 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 shown	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	476ms	2 NS 1 A 1 MX	🔓 Insecure