carstenholst.dk

📜 Historical scan 2026-09-30 13:14:05 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

carstenholst.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 19 February 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 92.113.145.52 is hosted by Webdock.io ApS (AS44803) in Denmark. Mail is handled by mx4.spamfri.dk, mx2.spamfri.dk and 2 more. The zone is not DNSSEC-signed, 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 54ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.e-studio.dk	195.242.131.5 2001:67c:564:fffc::11	ns1.e-studio.dk ns1.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
ns2.e-studio.dk	2a00:1b18:2:3::2 62.69.152.34	ns2.e-studio.dk ns2.e-studio.dk	AS47527 DLX A/S AS47527 DLX A/S
ns3.e-studio.dk	193.200.90.183 2001:67c:564:fffc::13	ns3.e-studio.dk ns3.e-studio.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

🌍 A Records#

1 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
92.113.145.52	300s	holstweb.dk	AS44803	Webdock.io ApS	92.113.144.0/21	🇩🇰 Denmark	Nørre Åby

📧 MX Records#

4 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx4.spamfri.dk	193.200.91.108 2001:67c:564:fffd::4001	mx4.spamfri.dk mx4.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
20	3600s	mx2.spamfri.dk	193.200.91.109 2001:67c:564:fffd::2001	mx2.spamfri.dk mx2.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS
30	3600s	mx3.spamfri.dk	2a00:1b18:2:3:fe::2 62.69.152.43	mx3.spamfri.dk mx3.spamfri.dk	AS47527 DLX A/S AS47527 DLX A/S
40	3600s	mx1.spamfri.dk	195.242.131.16 2001:67c:564:fffd::1001	mx1.spamfri.dk mx1.spamfri.dk	AS62121 Christian Ebsen ApS AS62121 Christian Ebsen ApS

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	193.200.90.102
🔶 Autoconfig	193.200.90.102

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 59ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	cpanelemaildiscovery.cpanel.net

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.carstenholst.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 17:46:49

www CNAME	carstenholst.dk (all on carstenholst.dk) → 92.113.145.52 (AS44803)
www vs bare domain	Same network carstenholst.dk: 92.113.145.52 (AS44803) www.carstenholst.dk: 92.113.145.52 (AS44803)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.carstenholst.dk	t4z3UteDhGIgyWmZTVOPcn9J2BtcTtoZTapUb-1-SKU

🔗 TLSA / DANE#

4 records 139ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.spamfri.dk	DANE-EE · SPKI · SHA-256	884451547A03D0AC2F628D943839BAA6…
SMTP _25._tcp.mx2.spamfri.dk	DANE-EE · SPKI · SHA-256	6598C93F79B95376BB8099E9AC862167…
SMTP _25._tcp.mx3.spamfri.dk	DANE-EE · SPKI · SHA-256	BBFB0694919290E5BC9D6E2C6F47D846…
SMTP _25._tcp.mx4.spamfri.dk	DANE-EE · SPKI · SHA-256	4EE743A99328AEF5142706CA5FD3AD61…

🔐 DNSSEC#

116ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2026092903
Primary NS (MNAME)	ns1.e-studio.dk
Responsible (RNAME)	hostmaster@mailrelay.e-studio.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-10 02:06:47

Field	Value
Registrar	dns.services ApS
Registered	2001-02-19
Expires	2027-03-31 (157d)

📋 WHOIS#

⏱️ Lookup Timing#

54ms

38ms

30ms

AAAA

33ms

TXT

146ms

CAA

35ms

HTTPS

47ms

TLSA

139ms

SOA

34ms

MTA-STS

62ms

DNSSEC

116ms

SRV

59ms

Total

943ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 08:41:05	925ms	3 NS 1 A 4 MX	🔓 Insecure
2026-09-30 13:14:05 shown	943ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-28 03:14:39	1013ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-25 09:19:57	2613ms	3 NS 1 A 4 MX	🔓 Insecure
2026-08-05 16:41:29	3243ms	3 NS 1 A 4 MX	🔓 Insecure
2026-07-29 18:54:53	27184ms	2 NS 0 A 0 MX	❓ Unknown
2026-07-28 11:01:07	17332ms	2 NS 0 A 0 MX	❓ Unknown
2026-07-27 09:40:01	1070ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-26 08:41:48	953ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-25 08:07:48	10067ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-24 07:43:00	1481ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-23 06:34:14	1105ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-22 03:21:55	902ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-20 08:19:18	8591ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-19 03:03:26	842ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-18 01:49:41	8682ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-15 23:15:55	970ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-13 15:33:36	8615ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-12 00:28:07	982ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-10 09:57:15	27334ms	2 NS 0 A 0 MX	❓ Unknown
2026-07-08 13:46:21	1037ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-06 16:42:06	65535ms	2 NS 0 A 0 MX	❓ Unknown
2026-07-05 14:46:26	1356ms	2 NS 0 A 0 MX	⚠️ Bogus
2026-07-04 10:25:02	47114ms	2 NS 0 A 0 MX	❓ Unknown
2026-07-02 22:23:13	848ms	2 NS 0 A 0 MX	⚠️ Bogus