osterlund.dk is a .dk domain served by 5 nameservers (ns1.he.net, ns2.he.net, ns3.he.net and 2 more). It was registered on 25 June 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is not DNSSEC-signed, 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.
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (osterlund.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| Policy | Record (_dmarc.osterlund.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:hxrxpily@ag.dmarcian.com; ruf=mailto:hxrxpily@fr.dmarcian.com;aspf=s; fo=1; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves osterlund.dk: no address www.osterlund.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| — | 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.
DNS lookups: 1/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025050500 |
| Primary NS (MNAME) | ns1.he.net |
| Responsible (RNAME) | hostmaster@he.net |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 172800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2005-06-25 |
| Expires | 2030-06-30 (1348d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-04 04:41:37 | 9598ms | 5 NS 0 A 7 MX | 🔓 Insecure |
| 2026-06-25 22:35:19 shown | 10864ms | 5 NS 0 A 7 MX | 🔓 Insecure |
| 2026-06-21 20:50:03 | 1026ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 23:34:50 | 4063ms | 5 NS 0 A 7 MX | 🔓 Insecure |