ktbyg.dk DNS records

🖥️ Nameservers2 records 117ms

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 Records2 records 93ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.79.48	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.142.4	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 87ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ktbyg-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::a 2a01:111:f403:ca09::9 2a01:111:f403:ca09::b 52.101.209.153 52.101.68.15 52.101.68.21 52.101.68.3	mail-db4pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00403.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 109ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::ac43:8e04	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:4f30	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 109ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.79.48,172.67.142.4 ech=AEX+DQBBuAAgACBUiZzoF+8Qp/q0L7Fr7o9wQWl41LLlrVZI/zMql40BGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:8e04,2606:4700:3037::6815:4f30

🔌 SRV Records1 records 174ms

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

📝 TXT Records2 records 325ms

TXT Record
MS=ms64755753
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.ktbyg.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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.ktbyg.dk	BbAoNoTc3Jrk8k_xjUFMdvlOCxQGGxsfmsk2xrRdgSE
TXT	_acme-challenge.ktbyg.dk	hHeYMJ_rrzD5xVla-oruBSh7DjEZuR0QG0C46e2Nm9s

🔗 TLSA / DANE

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

🔐 DNSSEC191ms

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

🏷️ SOA0ms

Field	Value
Serial	2413509957
Primary NS (MNAME)	ada.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

117ms

A

93ms

MX

87ms

AAAA

109ms

TXT

325ms

CAA

90ms

HTTPS

109ms

TLSA

868ms

SOA

0ms

MTA-STS

123ms

DNSSEC

191ms

SRV

174ms

Total

2279ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 05:16:54	2279ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-27 10:24:19	1379ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-26 10:21:44	1243ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-09 15:21:03	2095ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-02 08:20:38	9617ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-09 19:37:18	11044ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-30 18:23:43	1602ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-25 11:21:27	3708ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-25 10:40:02	2152ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-24 14:22:27	2419ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-20 03:33:22	1320ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-17 15:20:59	1130ms	2 NS 2 A 1 MX	🔒 Secure	View