centec.dk

📜 Historical scan 2026-06-16 20:43:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centec.dk is a .dk domain served by 2 nameservers (ns1.simpleagencygroup.dk, ns2.simpleagencygroup.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.178.155.214 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by mail.onlinemail.io. The zone is DNSSEC-signed and validates, publishes a 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 507ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simpleagencygroup.dk	—	—	—
ns2.simpleagencygroup.dk	—	—	—

🌍 A Records#

1 records 498ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.178.155.214	—	188-178-155-214-static.dk.customer.tdc.net	AS3292	TDC Holding A/S	188.176.0.0/13	🇩🇰 Denmark	Hedehusene

📧 MX Records#

1 records 507ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	mail.onlinemail.io	185.21.42.13	director1.mf.curanet.dk	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 2148ms

TXT Record
v=spf1 a include:spf.curanet.dk include:mailcleaner.dk ~all

✉️ SPF#

Policy	Record (centec.dk)
~all (soft fail)	v=spf1 a include:spf.curanet.dk include:mailcleaner.dk ~all

📨 DMARC#

Policy	Record (_dmarc.centec.dk)
p=quarantine	v=DMARC1;p=quarantine;sp=quarantine;pct=100;ri=86400;aspf=r;adkim=r;fo=1

📬 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 2026-10-11 02:40:28

www	188.178.155.214 (AS3292) (address records, no CNAME)
www vs bare domain	Same network centec.dk: 188.178.155.214 (AS3292) www.centec.dk: 188.178.155.214 (AS3292)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-centec-dk._domainkey.centecdk.d-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-centec-dk._domainkey.centecdk.d-v1.dkim.mail.microsoft	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: 6/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2407ms

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

🏷️ SOA#

972ms

Field	Value
Serial	2025072901
Primary NS (MNAME)	ns1.simpleagencygroup.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

507ms

498ms

507ms

AAAA

485ms

TXT

2148ms

CAA

1176ms

HTTPS

1121ms

TLSA

727ms

SOA

972ms

MTA-STS

542ms

DNSSEC

2407ms

SRV

0ms

Total

19873ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 17:39:05	888ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 08:37:49	867ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 22:17:21	1105ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 00:53:32	741ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 22:41:41	780ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 12:48:24	647ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:43:48 shown	19873ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 20:05:44	598ms	2 NS 1 A 1 MX	🔒 Secure