gerstenfeldt.dk

📜 Historical scan 2026-07-03 07:30:44 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gerstenfeldt.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.70.0.4 is hosted by HostRoyale Technologies Pvt Ltd (AS133499) in Australia. Mail is handled by gerstenfeldt-dk.mail.protection.outlook.com. 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#

2 records 30ms

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 Records#

1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.70.0.4	3600s	—	AS133499	HostRoyale Technologies Pvt Ltd	212.70.0.0/23	🇦🇺 Australia	Melbourne

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	gerstenfeldt-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca09:: 2a01:111:f403:ca09::8 2a01:111:f403:ca09::f 52.101.68.16 52.101.68.3 52.101.68.39 52.101.68.8	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.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
🔶 Autoconfig	212.70.0.4

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 129ms

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

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.gerstenfeldt.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100; rua=mailto:admin@gerstenfeldt.dk

📬 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 00:02:20

www	212.70.0.4 (AS133499) (address records, no CNAME)
www vs bare domain	Same network gerstenfeldt.dk: 212.70.0.4 (AS133499) www.gerstenfeldt.dk: 212.70.0.4 (AS133499)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-gerstenfeldt-dk._domainkey.gerstenfeldt.onmicrosoft.com	RSA · ~1024 bit below 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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

2049ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2025082001
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

30ms

33ms

36ms

AAAA

35ms

TXT

129ms

CAA

29ms

HTTPS

32ms

TLSA

4032ms

SOA

35ms

MTA-STS

38ms

DNSSEC

2049ms

SRV

41ms

Total

6527ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 17:42:27	4489ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 09:43:26	4692ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 07:30:44 shown	6527ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 06:00:39	4972ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 09:49:15	4667ms	2 NS 1 A 1 MX	🔒 Secure