kato-byg.dk DNS records

🖥️ Nameservers4 records 140ms

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 Records1 records 140ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.145	3600s	linux260.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 133ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	katobyg-dk01b.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::8 2a01:111:f403:ca09::4 2a01:111:f403:ca09::f 52.101.68.27 52.101.68.8 52.101.73.19 52.101.73.24	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 52.96.119.184
🔶 Autoconfig	93.191.156.145

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 843ms

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

📝 TXT Records1 records 254ms

TXT Record
v=spf1 include:spf.simply.com include:spf.protection.outlook.com ~all

✉️ SPF

Policy	Record (kato-byg.dk)
~all (soft fail)	v=spf1 include:spf.simply.com include:spf.protection.outlook.com ~all

📨 DMARC

Policy	Record (_dmarc.kato-byg.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC202ms

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

🏷️ SOA128ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

140ms

A

140ms

MX

133ms

AAAA

134ms

TXT

254ms

CAA

140ms

HTTPS

134ms

TLSA

141ms

SOA

128ms

MTA-STS

135ms

DNSSEC

202ms

SRV

843ms

Total

1619ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-23 14:01:52	1619ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 09:54:36	1140ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 05:32:15	881ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 03:54:46	1001ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:44:42	2176ms	4 NS 1 A 1 MX	🔒 Secure	View