cetro.dk

📜 Historical scan 2026-09-11 12:05:41  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cetro.dk is a .dk domain served by 2 nameservers (houston.ns.cloudflare.com, liv.ns.cloudflare.com). It was registered on 26 March 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.150.1.1 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, 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   124ms
NameserverIP addressesPTRASN / ISP
houston.ns.cloudflare.com 108.162.195.52
162.159.44.52
172.64.35.52
2606:4700:58::a29f:2c34
2803:f800:50::6ca2:c334
2a06:98c1:50::ac40:2334		 houston.ns.cloudflare.com
houston.ns.cloudflare.com
houston.ns.cloudflare.com
houston.ns.cloudflare.com
houston.ns.cloudflare.com
houston.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
liv.ns.cloudflare.com 108.162.192.188
172.64.32.188
173.245.58.188
2606:4700:50::adf5:3abc
2803:f800:50::6ca2:c0bc
2a06:98c1:50::ac40:20bc		 liv.ns.cloudflare.com
liv.ns.cloudflare.com
liv.ns.cloudflare.com
liv.ns.cloudflare.com
liv.ns.cloudflare.com
liv.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.

🌍 A Records#

1 records   107ms
IPTTLPTRASNISP / OrgCIDRCountryCity
216.150.1.1 600s — AS16509 Amazon.com, Inc. 216.150.1.0/24 🇺🇸 United States —

📧 MX Records#

5 records   134ms
PriorityTTLMail ServerIP addressesPTRASN
1 300s aspmx.l.google.com 142.251.9.26
2a00:1450:4025:c03::1b		 rc-in-f26.1e100.net
rc-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
5 300s alt1.aspmx.l.google.com 192.178.211.27
2404:6800:4000:1025::1b		 lcbomp-in-f27.1e100.net
lcbomp-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
5 300s alt2.aspmx.l.google.com 192.178.158.27
2404:6800:4013:813::1a		 lcdels-in-f27.1e100.net
lcdels-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
10 300s alt3.aspmx.l.google.com 173.194.41.27
173.194.41.27
2404:6800:4001:c01::1b		 yukulwh-in-f27.1e100.net
mad01s14-in-f27.1e100.net
yukulwh-in-f27.1e100.net		 AS15169 Google LLC
AS15169 Google LLC
AS15169 Google LLC
10 300s alt4.aspmx.l.google.com 172.253.158.26
2404:6800:4003:c26::1a		 so-in-f26.1e100.net
so-in-f26.1e100.net		 AS15169 Google LLC
AS15169 Google LLC

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover172.67.158.207
🔶 Autoconfig172.67.158.207

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records   379ms
TXT Record
google-site-verification=blnCeW685_JbMrI7c6m5ObAZ9D-bJYwINYidzRPDOfQ
v=spf1 ip4:45.148.28.147 ip4:172.104.230.139 include:_spf.google.com ~all

✉️ SPF#

PolicyRecord (cetro.dk)
~all (soft fail) v=spf1 ip4:45.148.28.147 ip4:172.104.230.139 include:_spf.google.com ~all

📨 DMARC#

PolicyRecord (_dmarc.cetro.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:58a17d9634f84282ab94745e2bde27f0@dmarc-reports.cloudflare.net,mailto:morten@cetro.dk

📬 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 2026-10-09 19:25:18
www CNAMEe93b79b009335301.vercel-dns-017.com (all on vercel-dns-017.com)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

✍️ DKIM keys#

1 found
SelectorCNAMEKey
google — 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: 1/10 · policy: ~all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.cetro.dk 7EILM3lRAQGSlGgoau9_d0WDopZEIC9jx31WTWyXL8Q
TXT _acme-challenge.cetro.dk VJMiXtLDHcQIRcmjL_LKiw480syJUGv9a3PAxzwP5A0

🔗 TLSA / DANE#

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

🔐 DNSSEC#

193ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2414029809
Primary NS (MNAME)houston.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-07 11:37:27
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2012-03-26
Expires2027-03-31 (161d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
124ms
A
107ms
MX
134ms
AAAA
135ms
TXT
379ms
CAA
129ms
HTTPS
121ms
TLSA
99ms
SOA
0ms
MTA-STS
123ms
DNSSEC
193ms
SRV
282ms
Total
1590ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-07 11:20:38 1464ms 2 NS 1 A 5 MX 🔓 Insecure
2026-10-03 07:34:08 546ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-24 06:46:09 877ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-24 04:44:36 847ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-18 04:09:22 919ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-12 23:06:44 872ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-11 12:05:41 shown 1590ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-04 09:34:52 2219ms 2 NS 1 A 5 MX 🔓 Insecure
2026-09-01 03:36:09 1397ms 2 NS 1 A 5 MX 🔓 Insecure
2026-08-29 14:48:38 1536ms 2 NS 1 A 5 MX 🔓 Insecure
2026-07-08 13:52:15 3389ms 2 NS 1 A 5 MX 🔓 Insecure
2026-06-25 11:28:49 3385ms 2 NS 1 A 5 MX 🔓 Insecure
2026-06-24 00:41:14 999ms 2 NS 1 A 5 MX 🔓 Insecure
2026-06-21 09:14:30 1191ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-19 15:36:40 772ms 2 NS 1 A 5 MX 🔓 Insecure
2026-06-19 10:16:16 5577ms 2 NS 1 A 5 MX 🔓 Insecure
2026-06-16 20:10:36 561ms 2 NS 1 A 5 MX 🔓 Insecure
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