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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 20.50.64.13 | 3600s | — | AS8075 | Microsoft Corporation | 20.48.0.0/12 | 🇮🇪 Ireland | Dublin |
| 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. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.154.152 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 0 | 1 | 5061 | sipfed.online.lync.com |
| 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 |
| 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 |
| Policy | Record (_dmarc.osterbo.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; ruf=mailto:kaa@osterbo.dk; fo=1; |
| www CNAME | app-moliripublic-osterbo-prod.azurewebsites.net (all on azurewebsites.net) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 8/10 · policy: -all
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026100501 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2001-09-25 |
| Expires | 2030-09-30 (1439d) |
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).
| 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 shown | 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 | 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 |