ktebyg.dk

📜 Historical scan 2026-09-29 13:44:16 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ktebyg.dk is a .dk domain served by 2 nameservers (ada.ns.cloudflare.com, tom.ns.cloudflare.com). It was registered on 1 March 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.12.160 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by ktebyg-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 39ms

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 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.12.160	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.195.34	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ktebyg-dk.mail.protection.outlook.com	2a01:111:f403:ca09::20 2a01:111:f403:ca21::10 2a01:111:f403:ca38::8 2a01:111:f403:ca3c::8 52.101.185.114 52.101.68.21 52.101.68.27 52.101.73.145	mail-as8pr05cu00400.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-zrxpr04cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

2 records 29ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:ca0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:c322	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.12.160,172.67.195.34 ech=AEX+DQBB4wAgACBxLzCVt58u0238+KpWIyBCwB3Sd6EJvNsgsS4+2o/FSQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:ca0,2606:4700:3035::ac43:c322

🔌 SRV Records#

1 records 69ms

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

📝 TXT Records#

7 records 178ms

TXT Record
_rc6gvisjgos2oqupw5oyc5kodlua8b4
64z9wd963qq6h8dmh8fzql6ccg80tb5s
a75cor9pkf60eh6pb9as1669jb
autodesk-domain-verification=lexg6jyWVUkTr6X2YUUP
brevo-code:17b13c43a1f87b3883fb9b91f63e53fb
MS=ms71995429
v=spf1 include:_spf.mailersend.net include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (ktebyg.dk)
-all (hard fail)	v=spf1 include:_spf.mailersend.net include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.ktebyg.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:ba30210a81044230a67832541b4f7628@dmarc-reports.cloudflare.net,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 2026-10-17 06:07:27

www	104.21.12.160 172.67.195.34 2606:4700:3034::6815:ca0 2606:4700:3035::ac43:c322 (AS13335) (address records, no CNAME)
www vs bare domain	Same network ktebyg.dk: 104.21.12.160 172.67.195.34 2606:4700:3034::6815:ca0 2606:4700:3035::ac43:c322 (AS13335) www.ktebyg.dk: 104.21.12.160 172.67.195.34 2606:4700:3034::6815:ca0 2606:4700:3035::ac43:c322 (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#

1 found

Selector	CNAME	Key
selector1	selector1-ktebyg-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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

114ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2416092108
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 2026-10-12 20:28:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-03-01
Expires	2027-03-31 (162d)

🔗 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
kt-erhvervsbyg.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

31ms

47ms

AAAA

29ms

TXT

178ms

CAA

37ms

HTTPS

45ms

TLSA

179ms

SOA

0ms

MTA-STS

73ms

DNSSEC

114ms

SRV

69ms

Total

910ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 06:07:27	3074ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-14 04:10:20	1794ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-06 14:49:27	3821ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-29 13:44:16 shown	910ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-25 12:49:34	1075ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 12:37:24	931ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 12:32:19	2123ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-28 05:58:15	1287ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-27 11:18:10	729ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-09 01:57:19	2120ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-07 08:54:47	1478ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-27 00:58:06	2212ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-10 00:23:59	2148ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-18 02:04:30	3048ms	2 NS 2 A 1 MX	🔒 Secure