rdtinvest.dk is a .dk domain served by 2 nameservers (bruce.ns.cloudflare.com, selah.ns.cloudflare.com). It was registered on 4 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.90.150 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rdtinvest-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.90.150 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.157.227 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 172.67.157.227 |
| 🔶 Autoconfig | 104.21.90.150 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:5a96 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:9de3 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.90.150,172.67.157.227 ech=AEX+DQBB1AAgACDlQS8OPB3M2oOoCB9qtqz3pOAPwzYp9Kn+XAWO1uRicQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:5a96,2606:4700:3033::ac43:9de3 |
| TXT Record |
|---|
| MS=ms90006795 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (rdtinvest.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.90.150 172.67.157.227 2606:4700:3030::6815:5a96 2606:4700:3033::ac43:9de3 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network rdtinvest.dk: 104.21.90.150 172.67.157.227 2606:4700:3030::6815:5a96 2606:4700:3033::ac43:9de3 (AS13335) www.rdtinvest.dk: 104.21.90.150 172.67.157.227 2606:4700:3030::6815:5a96 2606:4700:3033::ac43:9de3 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
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 | 2417573445 |
| Primary NS (MNAME) | bruce.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2024-01-04 |
| Expires | 2027-01-03 (76d) |
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 |
|---|---|---|---|
| 2026-10-16 15:45:37 shown | 3809ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 16:53:11 | 1344ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 12:22:42 | 899ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-07 02:55:59 | 3172ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 18:27:34 | 992ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 18:11:09 | 10452ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-17 21:43:42 | 4507ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-01 12:12:55 | 1113ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-28 14:36:54 | 933ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 04:57:04 | 1177ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 21:01:41 | 3098ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-21 12:45:16 | 1143ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 20:53:51 | 1805ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-18 08:28:01 | 1074ms | 2 NS 2 A 1 MX | 🔓 Insecure |