corteza.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 1 March 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 78.159.101.157 is hosted by Leaseweb Deutschland GmbH (AS28753) in Germany. Mail is handled by mx1.us.opalstack.com, mx2.us.opalstack.com. The zone is DNSSEC-signed and validates, has no 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 78.159.101.157 | — | opal9.opalstack.com | AS28753 | Leaseweb Deutschland GmbH | 78.159.96.0/19 | 🇩🇪 Germany | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mx1.us.opalstack.com | 108.62.123.121 | mx1.us.opalstack.com | AS30633 Leaseweb USA, Inc. |
| 10 | — | mx2.us.opalstack.com | 23.82.16.244 | mx2.us.opalstack.com | AS7203 Leaseweb USA, Inc. |
| www | 78.159.101.157 (AS28753) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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.
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026061101 |
| 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 | Punktum dk A/S (direct) |
| Registered | 2009-03-01 |
| Expires | 2028-03-31 (531d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-12 08:43:17 | 2042ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-28 02:01:27 | 1098ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-15 05:00:29 | 2418ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-27 02:11:42 | 1134ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-11 20:27:07 | 5258ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-18 00:28:08 | 17039ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 20:13:06 | 1078ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 13:34:07 | 1214ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 22:41:37 shown | 1622ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 22:30:20 | 824ms | 2 NS 1 A 2 MX | 🔒 Secure |