concrete5.dk

📜 Historical scan 2026-06-19 19:37:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

concrete5.dk is a .dk domain served by 2 nameservers (ns1.concrete5danmark.dk, ns2.concrete5danmark.dk). It was registered on 28 October 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 138.201.255.81 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by concrete5-dk.mail.protection.outlook.com. The zone is DNSSEC-signed but currently fails validation, 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 88ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.concrete5danmark.dk	88.99.120.238	ns1.dnshotel.dk	AS24940 Hetzner Online GmbH
ns2.concrete5danmark.dk	94.130.170.39	ns2.dnshotel.dk	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 97ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
138.201.255.81	600s	server.concrete5danmark.dk	AS24940	Hetzner Online GmbH	138.201.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records#

1 records 98ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	concrete5-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::8 2a01:111:f403:ca04::9 2a01:111:f403:ca09::c 52.101.68.0 52.101.68.15 52.101.73.2 52.101.73.26	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.154.136
🔶 Autoconfig	138.201.255.81

🔷 AAAA Records (IPv6)#

1 records 97ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:173:2652::1	14400s	server.concrete5danmark.dk	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 498ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	cpanelemaildiscovery.cpanel.net

📝 TXT Records#

2 records 602ms

TXT Record
MS=ms52653078
v=spf1 ip4:138.201.255.81 include:spf.azehosting.net +a +mx +ip4:138.201.130.182 +include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (concrete5.dk)
-all (hard fail)	v=spf1 ip4:138.201.255.81 include:spf.azehosting.net +a +mx +ip4:138.201.130.182 +include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.concrete5.dk)
p=none (monitor only)	v=DMARC1;p=none;rua=mailto:9831d1d0da@rua.easydmarc.eu;ruf=mailto:9831d1d0da@ruf.easydmarc.eu;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 2026-10-20 21:59:47

www CNAME	concrete5.dk (all on concrete5.dk) → 138.201.255.81 2a01:4f8:173:2652::1 (AS24940)
www vs bare domain	Same network concrete5.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940) www.concrete5.dk: 138.201.255.81 2a01:4f8:173:2652::1 (AS24940)
Wildcard	No
Denial of existence	NSEC3 · 7 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 5/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.concrete5.dk	dtcacL__9bTlba8eHywzJbRNLuSOyucT30wBKr8nRzA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

281ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	broken trust chain resolving 'concrete5.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

108ms

Field	Value
Serial	2026061302
Primary NS (MNAME)	ns1.concrete5danmark.dk
Responsible (RNAME)	server-admin@azehosting.net
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-14 13:58:08

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-10-28
Expires	2026-10-31 (9d)

🔗 Same registrant#

12 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).

Domain	Registrar
c5dk.dk	Punktum dk A/S (direct)
concrete-cms.dk	Punktum dk A/S (direct)
concrete5danmark.dk	Punktum dk A/S (direct)
concretecms.dk	Punktum dk A/S (direct)
dcay.dk	Punktum dk A/S (direct)
jardexportal.dk	Punktum dk A/S (direct)
jensen-maar.dk	Punktum dk A/S (direct)
maargrafisk.dk	Punktum dk A/S (direct)
mgav.dk	Punktum dk A/S (direct)
perblumensaat.dk	Punktum dk A/S (direct)
randerspsykolog.dk	Punktum dk A/S (direct)
timur.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

88ms

97ms

98ms

AAAA

97ms

TXT

602ms

CAA

77ms

HTTPS

81ms

TLSA

149ms

SOA

108ms

MTA-STS

122ms

DNSSEC

281ms

SRV

498ms

Total

1035ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 21:59:47	1274ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-15 14:59:42	1506ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 13:47:42	1067ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 03:51:11	2994ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 03:45:35	2330ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 23:21:23	1914ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 23:14:02	3768ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 23:07:35	2236ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 22:55:49	1159ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-30 05:40:08	2465ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-29 02:15:08	913ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 01:27:39	1158ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 22:42:34	1229ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 22:08:21	3032ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-24 21:44:10	9134ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-23 21:24:05	6042ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-14 16:40:47	6820ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-02 02:19:06	15848ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-31 18:00:26	17493ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-28 02:44:00	6189ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-27 02:25:09	1452ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-21 19:18:05	1711ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-17 23:22:17	1419ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-08 17:39:28	19597ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-07 02:47:17	1217ms	2 NS 1 A 1 MX	🔒 Secure