centeo.dk

📜 Historical scan 2026-08-28 09:45:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

centeo.dk is a .dk domain served by 2 nameservers (christina.ns.cloudflare.com, frank.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.75.193 is hosted by Cloudflare, Inc. (AS13335). 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 is reachable over IPv6. 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 34ms

Nameserver	IP addresses	PTR	ASN / ISP
christina.ns.cloudflare.com	108.162.194.193 162.159.38.193 172.64.34.193 2606:4700:50::a29f:26c1 2803:f800:50::6ca2:c2c1 2a06:98c1:50::ac40:22c1	christina.ns.cloudflare.com christina.ns.cloudflare.com christina.ns.cloudflare.com christina.ns.cloudflare.com christina.ns.cloudflare.com christina.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
frank.ns.cloudflare.com	108.162.193.166 172.64.33.166 173.245.59.166 2606:4700:58::adf5:3ba6 2803:f800:50::6ca2:c1a6 2a06:98c1:50::ac40:21a6	frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.75.193	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.180.227	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 25ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a 64.233.161.27	lt-in-f26.1e100.net lt-in-x1a.1e100.net lh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4000:1025::1b	lcbomp-in-f26.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1b	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4001:c01::1b	so-in-f27.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	172.253.158.27 2404:6800:4008:c01::1b	so-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4bc1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:b4e3	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.75.193,172.67.180.227 ech=AEX+DQBBugAgACAXUf+23YDboba4db+V6/wsezT/zYza/z19G+HggcsuXAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4bc1,2606:4700:3031::ac43:b4e3

📝 TXT Records#

7 records 135ms

TXT Record
anthropic-domain-verification-cmkwwb=EyFNCrqQETja5YFbQc6wdeXU6
google-site-verification=3FnNrmLNWau1xlCoX8vBrbdPM6ObStqbJpuQusOID74
google-site-verification=83_ofZib14DqpxzYeEALM6cbmAf2pvmmcHEZgTJClYg
google-site-verification=tLNaX-sLuOZQXe8H5PUVhznrhBdBEGzGrDRPzRPYyio
google-site-verification=v1xNbOPVRfCfs_pHkS9V3nksD7l5reHGhZYld_w3njU
MS=77B3B5734E41477AECDA0B15E9CD7E7BD659BD75
v=spf1 include:_spf.google.com include:spf.inmobile.com ~all

✉️ SPF#

Policy	Record (centeo.dk)
~all (soft fail)	v=spf1 include:_spf.google.com include:spf.inmobile.com ~all

📨 DMARC#

Policy	Record (_dmarc.centeo.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:4e8618e3736041e9bee2712fb76a544a@dmarc-reports.cloudflare.net

📬 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 02:09:57

www	104.21.75.193 172.67.180.227 2606:4700:3031::6815:4bc1 2606:4700:3031::ac43:b4e3 (AS13335) (address records, no CNAME)
www vs bare domain	Same network centeo.dk: 104.21.75.193 172.67.180.227 2606:4700:3031::6815:4bc1 2606:4700:3031::ac43:b4e3 (AS13335) www.centeo.dk: 104.21.75.193 172.67.180.227 2606:4700:3031::6815:4bc1 2606:4700:3031::ac43:b4e3 (AS13335)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
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: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.centeo.dk	E9Y-KOrRGQoQT_fTXTSIBNmemcrXO1B40ORcJmoPCi4
TXT	_acme-challenge.centeo.dk	aiGWXIO_ECjNHelalmfSGuvDCDjJDq_QsxMEDHpuIro

🔗 TLSA / DANE#

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

🔐 DNSSEC#

104ms

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	2413358940
Primary NS (MNAME)	christina.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

34ms

29ms

25ms

AAAA

33ms

TXT

135ms

CAA

33ms

HTTPS

34ms

TLSA

96ms

SOA

0ms

MTA-STS

40ms

DNSSEC

104ms

SRV

56ms

Total

701ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 02:09:57	2409ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-09 13:41:51	675ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-01 09:05:54	9423ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 09:06:53	832ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 22:28:43	855ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-01 23:47:05	1488ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-30 23:14:30	2237ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-28 11:27:21	10044ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-28 09:45:07 shown	701ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-26 09:39:54	992ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-25 18:34:43	808ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-18 18:59:05	5797ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-02 18:57:14	1157ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-20 17:57:21	1544ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-16 20:05:19	725ms	2 NS 2 A 5 MX	🔓 Insecure