siidenmark.dk is a .dk domain served by 2 nameservers (alexia.ns.cloudflare.com, decker.ns.cloudflare.com). It was registered on 24 March 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.67.235 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by siidenmark-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.67.235 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.182.244 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.40 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:43eb | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3031::ac43:b6f4 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.67.235,172.67.182.244 ech=AEX+DQBBrwAgACDFbLVr+tQwjYs0uzOcFpF085wLLfwFLYrtsR82S1dZawAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:43eb,2606:4700:3031::ac43:b6f4 |
| TXT Record |
|---|
| d365mktkey=hsmIxxxKu5BvFzSxseB9mJEGsJl0BqptuHW7AVDIdk8x |
| MS=ms11833269 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (siidenmark.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.siidenmark.dk) |
|---|---|
| p=reject | v=DMARC1;p=reject;pct=100;rua=mailto:dmarcnotify@sii.pl;sp=reject;aspf=s; |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve siidenmark.dk: 104.21.67.235 172.67.182.244 2606:4700:3030::6815:43eb 2606:4700:3031::ac43:b6f4 (AS13335) (all like this)www.siidenmark.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-siidenmark-dk._domainkey.siipoland.onmicrosoft.com | RSA · ~2048 bit |
| selector2 | selector2-siidenmark-dk._domainkey.siipoland.onmicrosoft.com | 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| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2414794637 |
| Primary NS (MNAME) | alexia.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Ovh |
| Registered | 2023-03-24 |
| Expires | 2027-03-23 (153d) |
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 |
|---|---|---|---|
| 2026-10-03 16:12:23 | 1485ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-25 15:23:26 shown | 1806ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-14 13:57:10 | 2912ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-05 23:34:00 | 2899ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-17 11:11:29 | 10830ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-15 02:55:50 | 1339ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 00:14:29 | 4458ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 06:01:48 | 1032ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 02:29:30 | 4290ms | 2 NS 2 A 1 MX | 🔓 Insecure |