holger-frederiksen.dk DNS records

🖥️ Nameservers2 records 8088ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 8091ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.106.223	3600s	linux2.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 8089ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	holgerfrederiksen-dk01e.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca09::1 2a01:111:f403:ca09::8 2a01:111:f403:ca09::e 52.101.68.5 52.101.73.11 52.101.73.15 52.101.73.2	mail-du0pr03cu00102.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.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 → 40.98.16.22
🔶 Autoconfig	94.231.106.223

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records4 records 8476ms

TXT Record
brevo-code:697190e319040c835c0c8bd5499a72ff
google-site-verification=FaSQE1l0QNr_GyiyaJFFVhR8k7N88G1JSTHbFdYkQZ8
google-site-verification=P6tjjNxQ0LJ4_x6e3FjrBgAlOkQKMTB68iPRLVw1gR8
v=spf1 include:spf.protection.outlook.com include:mandrillapp.com include:spf.brevo.com -all

✉️ SPF

Policy	Record (holger-frederiksen.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mandrillapp.com include:spf.brevo.com -all

📨 DMARC

Policy	Record (_dmarc.holger-frederiksen.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)

🔐 DNSSEC8093ms

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

🏷️ SOA95ms

Field	Value
Serial	2026030903
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

8088ms

A

8091ms

MX

8089ms

AAAA

8078ms

TXT

8476ms

CAA

8077ms

HTTPS

8075ms

TLSA

205ms

SOA

95ms

MTA-STS

67ms

DNSSEC

8093ms

SRV

106ms

Total

25514ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-21 13:02:28	25514ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 01:24:36	37714ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:53:12	3175ms	2 NS 1 A 1 MX	🔒 Secure	View