siemonsen.dk is a .dk domain served by 2 nameservers (gemma.ns.cloudflare.com, simon.ns.cloudflare.com). It was registered on 1 June 2004 (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 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | home.siemonsen.dk → 10.0.0.100 |
| 🔶 Autoconfig | home.siemonsen.dk → 10.0.0.100 |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (siemonsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| Policy | Record (_dmarc.siemonsen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:b9101f9abef745288a48e8726f1115b0@dmarc-reports.cloudflare.net |
| www | 91.107.235.34 2a01:4f8:1c1f:86ce::1 (AS24940) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~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| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.siemonsen.dk | home.siemonsen.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2411461806 |
| Primary NS (MNAME) | gemma.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2004-06-01 |
| Expires | 2027-06-30 (251d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 17:58:53 | 1596ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-14 16:06:47 | 857ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-07 08:51:18 | 1593ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-10-01 02:41:13 | 902ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-24 16:48:54 | 889ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-23 16:10:57 | 1528ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-09-20 17:41:33 | 1235ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-28 02:01:24 | 1165ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-27 13:15:12 | 1143ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-26 13:02:23 | 987ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-18 17:44:39 | 2054ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-14 06:18:05 | 1958ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-08-07 05:33:25 shown | 1732ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-27 09:04:59 | 1997ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-18 04:23:55 | 7872ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-17 00:45:35 | 1439ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-07-10 16:52:45 | 3295ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-22 08:50:18 | 1103ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-20 03:38:21 | 744ms | 2 NS 0 A 7 MX | 🔒 Secure |
| 2026-06-17 19:14:08 | 1122ms | 2 NS 0 A 7 MX | 🔒 Secure |