centron.dk

📜 Historical scan 2026-09-30 03:45:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centron.dk is a .dk domain served by 4 nameservers (a.ns14.net, b.ns14.net, c.ns14.net and 1 more). It was registered on 2 February 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.centron.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#

4 records 46ms

Nameserver	IP addresses	PTR	ASN / ISP
a.ns14.net	2001:8d8:fe:53:217:160:80:160 217.160.80.160	ns-ix1.ui-dns.de ns-ix1.ui-dns.de	AS8560 IONOS SE AS8560 IONOS SE
b.ns14.net	2001:8d8:fe:53:217:160:81:160 217.160.81.160	ns-ix1.ui-dns.biz ns-ix1.ui-dns.biz	AS8560 IONOS SE AS8560 IONOS SE
c.ns14.net	185.132.35.160 2607:f1c0:fe:53:185:132:35:160	ns-ix1.ui-dns.org ns-ix1.ui-dns.org	AS15418 Fasthosts Internet Limited AS15418 Fasthosts Internet Limited
d.ns14.net	185.132.34.160 2607:f1c0:fe:53:185:132:34:160	ns-ix1.ui-dns.com ns-ix1.ui-dns.com	AS15418 Fasthosts Internet Limited AS15418 Fasthosts Internet Limited

🌍 A Records#

1 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
81.201.105.20	86400s	—	—	—	—	🇳🇱 The Netherlands	—

📧 MX Records#

1 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	86400s	mail.centron.dk	81.201.105.20	—	—

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	81.201.105.20
🔶 Autoconfig	81.201.105.20

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-26 12:49:17

www	81.201.105.20 (address records, no CNAME)
www vs bare domain	Same network centron.dk: 81.201.105.20 www.centron.dk: 81.201.105.20
Wildcard	Yes: any name under the zone resolves

🔗 TLSA / DANE#

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

🔐 DNSSEC#

70ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2021090100
Primary NS (MNAME)	a.ns14.net
Responsible (RNAME)	hostmaster@centron.de
Refresh	39940s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-14 06:41:09

Field	Value
Registrar	InterNetX GmbH
Registered	2007-02-02
Expires	2027-02-28 (123d)

🔗 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#

46ms

47ms

60ms

AAAA

45ms

TXT

263ms

CAA

86ms

HTTPS

38ms

TLSA

261ms

SOA

0ms

MTA-STS

85ms

DNSSEC

70ms

SRV

104ms

Total

782ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-26 12:49:17	696ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-23 20:15:16	737ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-30 03:45:54 shown	782ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-26 06:37:52	842ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-22 12:43:06	1178ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 01:15:00	984ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-16 20:05:04	778ms	4 NS 1 A 1 MX	🔓 Insecure