constructioncenter.dk

📜 Historical scan 2026-06-22 13:21:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

constructioncenter.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 11 February 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 144.76.135.224 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by constructioncenter-dk.mail.protection.outlook.com. 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#

4 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 49ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
144.76.135.224	3600s	static01.bubbleweb.dk	AS24940	Hetzner Online GmbH	144.76.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records#

1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	constructioncenter-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::e 2a01:111:f403:ca09:: 2a01:111:f403:ca09::5 52.101.68.0 52.101.73.153 52.101.73.19 52.101.73.22	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 240ms

TXT Record
v=spf1 include:spf.officernd.com include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (constructioncenter.dk)
-all (hard fail)	v=spf1 include:spf.officernd.com include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.constructioncenter.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:dmarcreports@constructioncenter.dk; ruf=mailto:dmarcreports@constructioncenter.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 2026-10-13 03:56:42

www CNAME	constructioncenter.dk (all on constructioncenter.dk) → 144.76.135.224 (AS24940)
www vs bare domain	Same network constructioncenter.dk: 144.76.135.224 (AS24940) www.constructioncenter.dk: 144.76.135.224 (AS24940)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u4793986.wl237.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u4793986.wl237.sendgrid.net	RSA · ~1024 bit below 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#

66ms

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

🏷️ SOA#

48ms

Field	Value
Serial	2026012802
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-02 06:04:12

Field	Value
Registrar	Simply.com A/S
Registered	2021-02-11
Expires	2027-02-28 (134d)

📋 WHOIS#

⏱️ Lookup Timing#

49ms

53ms

AAAA

44ms

TXT

240ms

CAA

36ms

HTTPS

57ms

TLSA

688ms

SOA

48ms

MTA-STS

50ms

DNSSEC

66ms

SRV

87ms

Total

1434ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 03:56:42	1234ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-02 05:53:49	700ms	4 NS 1 A 1 MX	🔒 Secure
2026-10-01 05:49:58	895ms	4 NS 1 A 1 MX	🔒 Secure
2026-09-28 05:10:06	724ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-29 12:11:47	827ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-28 11:09:29	855ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-26 09:56:18	792ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-23 21:09:12	912ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 13:21:00 shown	1434ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-16 22:05:23	611ms	4 NS 1 A 1 MX	🔒 Secure