rexpc.dk is a .dk domain served by 2 nameservers (apollo.ns.cloudflare.com, pat.ns.cloudflare.com). It was registered on 8 April 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.53.188 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.53.188 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.216.44 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.53.188 |
| 🔶 Autoconfig | 104.21.53.188 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3037::6815:35bc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:d82c | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.53.188,172.67.216.44 ech=AEX+DQBBSwAgACD11o6crS/bLU3TWG3c5Ae/Qe5+Db736R+swrunvTY7YwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3037::6815:35bc,2606:4700:3037::ac43:d82c |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com include:spf.simply.com -all |
| v=spf1 include:spf.simply.com -all |
| Policy | Record (rexpc.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com include:spf.simply.com -all |
| -all (hard fail) | v=spf1 include:spf.simply.com -all |
| www | 104.21.53.188 172.67.216.44 2606:4700:3037::6815:35bc 2606:4700:3037::ac43:d82c (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 2/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.rexpc.dk | YigXXUHoh8b6RG7tmXJldraTPY6ljUy7ri7APj9J9jI |
| TXT | _acme-challenge.rexpc.dk | rq8UCLWiMb1twKuv8Rgr_6EogYAlz45e1bI0M0WL76U |
| 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 | 2415592699 |
| Primary NS (MNAME) | apollo.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2015-04-08 |
| Expires | 2027-04-30 (188d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-23 05:41:49 | 2695ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-30 08:14:07 | 697ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-24 14:29:20 | 3144ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-24 13:37:48 | 969ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-23 13:17:36 shown | 972ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-09-18 03:05:44 | 2243ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-08-27 11:27:16 | 1054ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-07-27 03:07:45 | 1432ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-07-26 02:30:06 | 1593ms | 2 NS 2 A 5 MX | 🔓 Insecure |
| 2026-07-20 15:22:31 | 1214ms | 4 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-25 06:50:57 | 1847ms | 4 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-18 05:38:31 | 856ms | 4 NS 1 A 5 MX | 🔒 Secure |