dtdcrew.dk is a .dk domain served by 2 nameservers (ingrid.ns.cloudflare.com, rodney.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.8.59 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by dtdcrew-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 |
|---|---|---|---|---|---|---|---|
| 104.21.8.59 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.138.154 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:83b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:8a9a | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.8.59,172.67.138.154 ech=AEX+DQBBdwAgACBBU3pwJ4kX+MCnsHHsXRr9XTOuS3wS22xsmZO1HyIaOQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:83b,2606:4700:3033::ac43:8a9a |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms37820413 |
| MS=ms93725212 |
| notion-domain-verification=t9uLH8FDMxcHwNzXC69XKX4wHPs3PFe6oCsWmDVYPF9 |
| slack-domain-verification=W8zWqxAnnVmLGme0fwRJ1bDbV2l1dkrcFIQ3WDuI |
| v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (dtdcrew.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:spf.protection.outlook.com ~all |
| Policy | Record (_dmarc.dtdcrew.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc@superstruct.uriports.com,mailto:f9a4e202c7b64d1a841103d3fd666d88@dmarc-reports.cloudflare.net; ruf=mailto:dmarc@superstruct.uriports.com; fo=1:d:s |
| Check | Result |
|---|---|
| Status | 🧪 Testing |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✓ Valid |
| Mode | testing |
| Policy ID | 20260130000000Z |
| max_age | 604800s |
| Policy MX | *.mail.protection.outlook.com |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:tlsrpt@superstruct.uriports.com |
| www | 212.237.249.17 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-dtdcrew-dk._domainkey.superstruct.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 | 2411941664 |
| Primary NS (MNAME) | ingrid.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 11:02:11 | 1170ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 11:15:15 | 13715ms | 4 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-12 11:35:36 shown | 2695ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-22 18:51:23 | 10677ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-30 18:24:50 | 1113ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 04:50:09 | 2703ms | 2 NS 2 A 1 MX | 🔓 Insecure |