holtzmann.dk

📜 Historical scan 2026-09-28 15:09:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

holtzmann.dk is a .dk domain served by 3 nameservers (ns1.netsite.dk, ns2.netsite.eu, ns3.netsite.se). It was registered on 5 August 2026 (WHOIS) and first appeared in the .dk zone on 6 August 2026. Its website address 185.224.18.200 is hosted by Netsite A/S (AS205206) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.netsite.dk	185.224.16.200 2a0c:cc00:0:1648::53	ns1.netsite.dk ns1.netsite.dk	AS205206 Netsite A/S AS205206 Netsite A/S
ns2.netsite.eu	194.58.196.59 2a01:3f1:859::53	ns2.netsite.eu ns2.netsite.eu	AS8674 Netnod AB AS8674 Netnod AB
ns3.netsite.se	185.42.137.115 2a01:3f0:400::59	ns3.netsite.se ns3.netsite.se	AS8674 Netnod AB AS8674 Netnod AB

🌍 A Records#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.224.18.200	3600s	parked.netsite.host	AS205206	Netsite A/S	185.224.16.0/22	🇩🇰 Denmark	—

📧 MX Records#

2 records 41ms

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 Records#

2 records 109ms

TXT Record
protonmail-verification=ade7b42b26f6b20df8230330de76d698be497b12
v=spf1 include:_spf.protonmail.ch mx ~all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.holtzmann.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-15 07:01:15

www	185.224.18.200 (AS205206) (address records, no CNAME)
www vs bare domain	Same network holtzmann.dk: 185.224.18.200 (AS205206) www.holtzmann.dk: 185.224.18.200 (AS205206)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records 54ms

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…

🔐 DNSSEC#

107ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092801
Primary NS (MNAME)	ns1.netsite.dk
Responsible (RNAME)	hostmaster@netsite.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-04 18:08:10

Field	Value
Registrar	Netsite A/S
Registered	2026-08-05
Expires	2027-08-04 (289d)

📋 WHOIS#

⏱️ Lookup Timing#

49ms

39ms

41ms

AAAA

34ms

TXT

109ms

CAA

37ms

HTTPS

33ms

TLSA

54ms

SOA

0ms

MTA-STS

47ms

DNSSEC

107ms

SRV

44ms

Total

648ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 07:01:15	753ms	3 NS 1 A 2 MX	🔒 Secure
2026-10-08 18:15:54	1034ms	3 NS 1 A 2 MX	🔒 Secure
2026-10-04 17:37:39	458ms	3 NS 1 A 2 MX	🔒 Secure
2026-10-01 17:33:00	529ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-30 17:20:05	720ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-28 15:09:35 shown	648ms	3 NS 1 A 2 MX	🔒 Secure
2026-09-24 14:24:57	675ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-19 17:17:16	798ms	3 NS 1 A 2 MX	🔓 Insecure
2026-09-06 18:37:33	866ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-27 16:24:44	676ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-20 20:35:07	7950ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-13 08:14:43	4558ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-12 06:00:39	9453ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-09 18:26:41	1127ms	3 NS 1 A 2 MX	🔓 Insecure
2026-08-06 08:47:07	832ms	3 NS 1 A 1 MX	🔓 Insecure