rei.dk is a .dk domain served by 2 nameservers (anirban.ns.cloudflare.com, naya.ns.cloudflare.com). It was registered on 2 May 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.150 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.70.150 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.136.193 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | . Null MX — domain accepts no email (RFC 7505) | |||
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.70.150 |
| 🔶 Autoconfig | 172.67.136.193 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3037::6815:4696 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:88c1 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.70.150,172.67.136.193 ech=AEX+DQBBOwAgACARFe9nK5vV9CjGgiItGDjteo3gyUT78fIxKEQjrGu9WAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:4696,2606:4700:3037::ac43:88c1 |
| TXT Record |
|---|
| v=spf1 a mx ~all |
| Policy | Record (rei.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ~all |
| www | 104.21.70.150 172.67.136.193 2606:4700:3037::6815:4696 2606:4700:3037::ac43:88c1 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
DNS lookups: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417648004 |
| Primary NS (MNAME) | anirban.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2001-05-02 |
| Expires | 2027-06-30 (253d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 21:30:28 shown | 1857ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-05 01:03:30 | 491ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 00:45:22 | 718ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 14:37:24 | 621ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 14:05:01 | 1088ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-09 03:46:33 | 9450ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 18:36:42 | 598ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 10:11:45 | 2964ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-19 07:33:46 | 4642ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-10 18:08:03 | 4887ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-31 11:36:11 | 967ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-17 20:32:15 | 8815ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-29 02:03:36 | 841ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 19:51:18 | 1644ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 18:37:34 | 1792ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 05:54:24 | 960ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-22 16:58:03 | 1175ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 20:11:03 | 1337ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 20:28:49 | 889ms | 2 NS 2 A 0 MX | 🔓 Insecure |