cst-assistenten.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 3 August 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.47.247.18 is hosted by One.com A/S (AS51468). Mail is handled by mxa.eu.mailgun.org, mxb.eu.mailgun.org. 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 |
|---|---|---|---|---|---|---|---|
| 195.47.247.18 | 3600s | one.com.webforward.g1i.one | AS51468 | One.com A/S | 195.47.247.0/24 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mxa.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| 0 | 3600s | mxb.eu.mailgun.org | 34.111.130.244 | 244.130.111.34.bc.googleusercontent.com | AS396982 Google LLC |
| TXT Record |
|---|
| v=spf1 include:mailgun.org include:_custspf.one.com ~all |
| Policy | Record (cst-assistenten.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:mailgun.org include:_custspf.one.com ~all |
| Policy | Record (_dmarc.cst-assistenten.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; |
| www | 195.47.247.18 (AS51468) (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 |
|---|---|---|
| s1 | — | 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: 6/10 · 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 | 2026082901 |
| 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 | 2022-08-03 |
| Expires | 2027-08-02 (280d) |
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 |
|---|---|
| cst-assistent.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 10:31:18 | 664ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-03 10:30:43 | 612ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-29 09:59:07 | 816ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-27 09:46:36 | 526ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-31 06:44:55 shown | 1681ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-05 10:28:13 | 1126ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-29 08:43:21 | 842ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-07 00:24:35 | 912ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-01 04:21:14 | 1116ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-29 01:36:41 | 595ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-27 02:02:39 | 674ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-26 11:33:54 | 663ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-16 23:06:35 | 524ms | 2 NS 1 A 2 MX | 🔒 Secure |