bykronborg.dk DNS records

🖥️ Nameservers3 records 41ms

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

🌍 A Records1 records 55ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.104.202.80	3600s	mbx.itsecurity.dk	AS50346	It Forum Gruppen A/s	193.104.202.0/24	🇩🇰 Denmark	Hellerup

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	bykronborg-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::3 2a01:111:f403:ca09::5 2a01:111:f403:ca09::b 52.101.209.153 52.101.68.18 52.101.68.3 52.101.73.6	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am6pr04cu00306.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)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 149ms

TXT Record
MS=ms27971168
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.bykronborg.dk)
p=reject	v=DMARC1; p=reject

📬 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)

🔐 DNSSEC79ms

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

🏷️ SOA0ms

Field	Value
Serial	2024052301
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

41ms

A

55ms

MX

40ms

AAAA

46ms

TXT

149ms

CAA

43ms

HTTPS

37ms

TLSA

676ms

SOA

0ms

MTA-STS

55ms

DNSSEC

79ms

SRV

58ms

Total

1302ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-02 05:13:34	1302ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 19:19:41	686ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 13:28:13	894ms	3 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 12:33:58	869ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 18:24:09	984ms	3 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-16 18:20:57	775ms	3 NS 1 A 1 MX	🔒 Secure	View