holretz.dk DNS records

🖥️ Nameservers4 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-38.azure-dns.com	150.171.10.38 2603:1061:0:10::26	ns1-38.azure-dns.com ns1-38.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-38.azure-dns.net	150.171.16.38 2620:1ec:8ec:10::26	ns2-38.azure-dns.net ns2-38.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-38.azure-dns.org	13.107.222.38 2a01:111:4000:10::26	ns3-38.azure-dns.org ns3-38.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-38.azure-dns.info	13.107.206.38 2620:1ec:bda:10::26	ns4-38.azure-dns.info ns4-38.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records1 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.153.39	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇳🇱 The Netherlands	Amsterdam

📧 MX Records2 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	3600s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 173ms

TXT Record
9g7hx6fffnxfsg823pnjmsd1zw5gch01
protonmail-verification=81123e2fdc9a811c7d4ac939e1a2117d52672f48
v=spf1 include:_spf.protonmail.ch mx ~all

✉️ SPF

Policy	Record (holretz.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch mx ~all

📨 DMARC

Policy	Record (_dmarc.holretz.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 / DANE4 records 51ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…

🔐 DNSSEC116ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1-38.azure-dns.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

39ms

A

46ms

MX

38ms

AAAA

53ms

TXT

173ms

CAA

43ms

HTTPS

45ms

TLSA

51ms

SOA

0ms

MTA-STS

93ms

DNSSEC

116ms

SRV

65ms

Total

708ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 07:50:40	708ms	4 NS 1 A 2 MX	🔓 Insecure	View
2026-06-25 07:51:38	851ms	4 NS 1 A 2 MX	🔓 Insecure	View
2026-06-24 09:21:59	1237ms	4 NS 1 A 2 MX	🔓 Insecure	View
2026-06-23 10:40:43	1182ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 13:44:10	2961ms	4 NS 1 A 2 MX	🔓 Insecure	View