oestermark.dk

📜 Historical scan 2026-09-30 14:06:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

oestermark.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.35 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by oestermark-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 47ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.35	3600s	linux36.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	oestermark-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca04::f 2a01:111:f403:ca48::8 52.101.103.162 52.101.68.25 52.101.73.123 52.101.91.153	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-matpr04cu00101.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 57ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 154ms

TXT Record
MS=ms74356181
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.oestermark.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 2026-10-12 12:58:59

www	185.21.42.35 (AS48854) (address records, no CNAME)
www vs bare domain	Same network oestermark.dk: 185.21.42.35 (AS48854) www.oestermark.dk: 185.21.42.35 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-oestermark-dk._domainkey.oestermarkent.onmicrosoft.com	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.

🔎 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#

85ms

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

🏷️ SOA#

65ms

Field	Value
Serial	2026092201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

47ms

42ms

30ms

AAAA

27ms

TXT

154ms

CAA

46ms

HTTPS

56ms

TLSA

598ms

SOA

65ms

MTA-STS

56ms

DNSSEC

85ms

SRV

57ms

Total

1066ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 01:20:07	1161ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 14:06:19 shown	1066ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 22:21:13	816ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 18:05:59	1208ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 08:24:00	1758ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 10:43:53	4704ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-28 08:19:56	2966ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-25 18:06:25	5294ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-30 12:41:54	1638ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-27 15:11:22	1082ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 07:16:01	811ms	2 NS 1 A 1 MX	🔓 Insecure