gerstenfeldt.dk

Records from scan: 2026-09-24 17:42:27 · 4489ms total · last checked 2026-10-17 13:38 (unchanged)

⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 26ms

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 32ms

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 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	gerstenfeldt-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::e 2a01:111:f403:ca09::28 2a01:111:f403:ca09::a 52.101.185.24 52.101.68.12 52.101.68.8 52.101.73.155	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-zrxpr07cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am7pr02cu00203.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 133ms

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#

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#

69ms

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

🏷️ SOA#

0ms

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#

26ms

32ms

28ms

AAAA

47ms

TXT

133ms

CAA

49ms

HTTPS

42ms

TLSA

4029ms

SOA

0ms

MTA-STS

46ms

DNSSEC

69ms

SRV

59ms

Total

4489ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 17:42:27 shown	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	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