duwaldline.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 9 March 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.9.90.188 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by duwaldline-dk.mail.protection.outlook.com, mxa.eu.mailgun.org and 1 more. 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 |
|---|---|---|---|---|---|---|---|
| 5.9.90.188 | — | host6.slyde.dk | AS24940 | Hetzner Online GmbH | 5.9.0.0/16 | 🇩🇪 Germany | Falkenstein |
| TXT Record |
|---|
| v=spf1 ip4:116.203.122.199 include:eu.mailgun.org include:spf.protection.outlook.com -all |
| Policy | Record (duwaldline.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:116.203.122.199 include:eu.mailgun.org include:spf.protection.outlook.com -all |
| www | 5.9.90.188 (AS24940) (address records, no CNAME) |
| 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 |
| Selector | CNAME | Key |
|---|---|---|
| k1 | dkim.mcsv.net | 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: 3/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026030201 |
| 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 | 2016-03-09 |
| Expires | 2027-03-31 (165d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:04:59 | 1350ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-10-05 06:35:37 | 1564ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-30 06:08:56 | 1106ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-09-29 16:26:02 | 1481ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-30 22:47:20 | 918ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-27 11:26:55 | 1006ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-08-07 15:30:36 | 6113ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-28 08:46:35 | 1132ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-20 17:06:41 | 1343ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-20 06:58:34 | 996ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-20 03:38:38 | 873ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-19 23:57:32 | 809ms | 2 NS 1 A 3 MX | 🔒 Secure |
| 2026-06-17 05:05:49 shown | 836ms | 2 NS 1 A 3 MX | 🔒 Secure |