kterhvervsbyg.dk

📜 Historical scan 2026-09-05 23:55:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kterhvervsbyg.dk is a .dk domain served by 2 nameservers (ada.ns.cloudflare.com, tom.ns.cloudflare.com). It was registered on 5 May 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.12.60 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by kterhvervsbyg-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 163ms

Nameserver	IP addresses	PTR	ASN / ISP
ada.ns.cloudflare.com	108.162.192.54 172.64.32.54 173.245.58.54 2606:4700:50::adf5:3a36 2803:f800:50::6ca2:c036 2a06:98c1:50::ac40:2036	ada.ns.cloudflare.com ada.ns.cloudflare.com ada.ns.cloudflare.com ada.ns.cloudflare.com ada.ns.cloudflare.com ada.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
tom.ns.cloudflare.com	108.162.193.147 172.64.33.147 173.245.59.147 2606:4700:58::adf5:3b93 2803:f800:50::6ca2:c193 2a06:98c1:50::ac40:2193	tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.ns.cloudflare.com tom.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 179ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.12.60	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.193.181	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 147ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	kterhvervsbyg-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::d 2a01:111:f403:ca09::28 2a01:111:f403:ca09::a 52.101.68.39 52.101.73.22 52.101.73.30 52.101.91.153	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-matpr04cu00101.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 → 40.99.149.168

🔷 AAAA Records (IPv6)#

2 records 161ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:c1b5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:c3c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 185ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.12.60,172.67.193.181 ech=AEX+DQBBqQAgACBDg3QMSaLQ6z1ooyAFp1w+I7ImvDGa1EsKYCK5S1cKPQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:c1b5,2606:4700:3035::6815:c3c

🔌 SRV Records#

1 records 279ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 305ms

TXT Record
google-site-verification=Q3ftTYSvA2_ASt-Tlqq5yOVWm6_hRzR8nD8oQmg2T8g
MS=ms64824089
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.kterhvervsbyg.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:dmarc_agg@vali.email;

📬 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 2026-10-21 07:32:30

www	104.21.12.60 172.67.193.181 2606:4700:3030::ac43:c1b5 2606:4700:3035::6815:c3c (AS13335) (address records, no CNAME)
www vs bare domain	Same network kterhvervsbyg.dk: 104.21.12.60 172.67.193.181 2606:4700:3030::ac43:c1b5 2606:4700:3035::6815:c3c (AS13335) www.kterhvervsbyg.dk: 104.21.12.60 172.67.193.181 2606:4700:3030::ac43:c1b5 2606:4700:3035::6815:c3c (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
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
selector1	selector1-kterhvervsbyg-dk._domainkey.ktebyg.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-kterhvervsbyg-dk._domainkey.ktebyg.onmicrosoft.com	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: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.kterhvervsbyg.dk	VS6Jo1obEucuMVth2NaIn9TdwPZp7kBiHYVqOUHGswg
TXT	_acme-challenge.kterhvervsbyg.dk	o9vGU0o18lwWwRO4cy-g-YKFGC9f249tsrRalgwTCoY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

218ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2413930956
Primary NS (MNAME)	ada.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 05:48:28

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-05-05
Expires	2027-05-31 (220d)

📋 WHOIS#

⏱️ Lookup Timing#

163ms

179ms

147ms

AAAA

161ms

TXT

305ms

CAA

169ms

HTTPS

185ms

TLSA

262ms

SOA

0ms

MTA-STS

147ms

DNSSEC

218ms

SRV

279ms

Total

1695ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 07:32:30	1659ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-14 11:52:32	1171ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-10 05:30:05	3808ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-08 02:31:38	1191ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 13:56:05	1388ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-26 13:21:04	1552ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 11:13:54	1040ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-17 09:25:11	2373ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-05 23:55:03 shown	1695ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 20:59:10	766ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 20:38:54	1220ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-22 02:39:07	2311ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-21 02:15:27	11586ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-17 19:09:05	2159ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-11 22:08:57	4261ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-04 23:48:04	3731ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-10 10:33:19	1463ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-09 00:29:29	2190ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-19 19:42:07	2698ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-18 03:10:21	5064ms	2 NS 2 A 1 MX	🔒 Secure