osterbo.dk

📜 Historical scan 2026-09-20 04:47:31 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

osterbo.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 25 September 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.64.13 is hosted by Microsoft Corporation (AS8075) in Ireland. Mail is handled by osterbo-dk.mx1.comendosystems.com, osterbo-dk.mx2.comendosystems.net. 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 119ms

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 115ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.64.13	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇮🇪 Ireland	Dublin

📧 MX Records#

2 records 99ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	osterbo-dk.mx1.comendosystems.com	192.162.219.255 2a01:77c0:1619:4102:a81b:80d0:e56c:edc0	mx41.electric.net gw2-1535.security.comendo.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	3600s	osterbo-dk.mx2.comendosystems.net	192.162.219.155	mx41.electric.net	AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.99.149.200

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 547ms

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

📝 TXT Records#

1 records 456ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf-hosting.eg.dk include:spf.emailsignatures365.com include:sendgrid.net include:spf-a.telia.com include:spf-b.telia.com -all

✉️ SPF#

Policy	Record (osterbo.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf-hosting.eg.dk include:spf.emailsignatures365.com include:sendgrid.net include:spf-a.telia.com include:spf-b.telia.com -all

📨 DMARC#

Policy	Record (_dmarc.osterbo.dk)
p=quarantine	v=DMARC1; p=quarantine; ruf=mailto:kaa@osterbo.dk; fo=1;

📬 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 2026-10-20 21:41:58

www CNAME	app-moliripublic-osterbo-prod.azurewebsites.net (all on azurewebsites.net) → 20.50.64.13 2603:1020:5:6::33 (AS8075)
www vs bare domain	Same network osterbo.dk: 20.50.64.13 (AS8075) www.osterbo.dk: 20.50.64.13 2603:1020:5:6::33 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

165ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026091402
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-20 22:02:18

Field	Value
Registrar	ONE.COM A/S
Registered	2001-09-25
Expires	2030-09-30 (1439d)

🔗 Same registrant#

8 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
boligivejle.dk	ONE.COM A/S
dvb-vejle.dk	Punktum dk A/S (direct)
osterbonabo.dk	ONE.COM A/S
senior-bolig.dk	ONE.COM A/S
seniorboligerne.dk	ONE.COM A/S
toftebovejle.dk	Punktum dk A/S (direct)
ungdomsboligerivejle.dk	ONE.COM A/S
østerbo.dk	ONE.COM A/S

📋 WHOIS#

⏱️ Lookup Timing#

119ms

115ms

99ms

AAAA

150ms

TXT

456ms

CAA

122ms

HTTPS

122ms

TLSA

240ms

SOA

0ms

MTA-STS

135ms

DNSSEC

165ms

SRV

547ms

Total

1315ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 21:41:58	1311ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-06 11:13:53	950ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-01 08:33:56	3441ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-20 04:47:31 shown	1315ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-31 16:58:47	2415ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-28 11:16:08	1156ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-30 22:22:43	861ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-18 06:50:13	881ms	2 NS 1 A 2 MX	🔒 Secure