kt-erhvervsbyg.dk

📜 Historical scan 2026-06-27 09:30:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kt-erhvervsbyg.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 104.21.53.229 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by kterhvervsbyg-dk0e.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 224ms

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 210ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.53.229	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.219.123	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 229ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	kterhvervsbyg-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::e 2a01:111:f403:ca09:: 2a01:111:f403:ca09::2 52.101.68.15 52.101.68.3 52.101.73.12 52.101.73.15	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am9pr04cu00107.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

2 records 214ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:db7b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:35e5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 219ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.53.229,172.67.219.123 ech=AEX+DQBBAAAgACD2W8FZNPXilLiFC/JYVZLvaYyCsa38UVtHKosEQjL0JgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:db7b,2606:4700:3032::6815:35e5

📝 TXT Records#

2 records 674ms

TXT Record
MS=ms91546556
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.kt-erhvervsbyg.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 2026-10-26 17:06:22

www	104.21.53.229 172.67.219.123 2606:4700:3035::6815:35e5 2606:4700:3037::ac43:db7b (AS13335) (address records, no CNAME)
www vs bare domain	Same network kt-erhvervsbyg.dk: 104.21.53.229 172.67.219.123 2606:4700:3035::6815:35e5 2606:4700:3037::ac43:db7b (AS13335) www.kt-erhvervsbyg.dk: 104.21.53.229 172.67.219.123 2606:4700:3035::6815:35e5 2606:4700:3037::ac43:db7b (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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

308ms

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

🏷️ SOA#

215ms

Field	Value
Serial	2407031044
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 2026-10-26 17:36:44

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-05-05
Expires	2027-05-31 (216d)

🔗 Same registrant#

1 domain

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
ktebyg.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

224ms

210ms

229ms

AAAA

214ms

TXT

674ms

CAA

205ms

HTTPS

219ms

TLSA

419ms

SOA

215ms

MTA-STS

259ms

DNSSEC

308ms

SRV

282ms

Total

2454ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-26 17:06:22	521ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-23 07:16:07	1203ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-14 05:59:16	1064ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-03 15:58:44	1262ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-02 15:55:44	815ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-30 15:43:11	903ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 16:26:45	3062ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-20 04:57:19	1684ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 23:17:05	1047ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 22:44:36	1503ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-07 08:42:02	2004ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-01 06:21:36	2334ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-10 14:13:57	17201ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-30 21:39:34	1148ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-27 09:30:12 shown	2454ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 13:55:25	3614ms	2 NS 2 A 1 MX	🔒 Secure