appacademy.dk is a .dk domain served by 2 nameservers (jack.ns.cloudflare.com, rosa.ns.cloudflare.com). It was registered on 6 June 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.204 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.13.204 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.133.23 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx.simply.com | 94.231.103.108 94.231.106.20 |
mx.simply.com mx.simply.com |
AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | appacademy.dk → 94.231.103.141 |
| 🔶 Autoconfig | 104.21.13.204 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::6815:dcc | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:8517 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.13.204,172.67.133.23 ech=AEX+DQBBvAAgACDCEGpSvI5yiNtcYtYwc/UiEXDsWjUYGeDBTaKhdh77dAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:dcc,2606:4700:3037::ac43:8517 |
| TXT Record |
|---|
| MS=ms33925018 |
| v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:servers.mcsv.net include:spf.simply.com include:spf.unoeuro.com include:mxsspf.sendpulse.com -all |
| Policy | Record (appacademy.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com include:spf.protection.outlook.com include:servers.mcsv.net include:spf.simply.com include:spf.unoeuro.com include:mxsspf.sendpulse.com -all |
| Policy | Record (_dmarc.appacademy.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:klh@appacademy.dk; ruf=mailto:klh@appacademy.dk; fo=1 |
| www | 104.21.13.204 172.67.133.23 2606:4700:3034::6815:dcc 2606:4700:3037::ac43:8517 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network appacademy.dk: 104.21.13.204 172.67.133.23 2606:4700:3034::6815:dcc 2606:4700:3037::ac43:8517 (AS13335) www.appacademy.dk: 104.21.13.204 172.67.133.23 2606:4700:3034::6815:dcc 2606:4700:3037::ac43:8517 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY |
DNS lookups: 7/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.appacademy.dk | appacademy.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.simply.com | DANE-EE · SPKI · SHA-256 | 4B949F05A63FED95FC94B3A83DD70167… |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417471946 |
| Primary NS (MNAME) | jack.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2013-06-06 |
| Expires | 2027-06-30 (256d) |
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).
| Domain | Registrar |
|---|---|
| codeweek.dk | Simply.com A/S |
| feud.dk | Punktum dk A/S (direct) |
| franskforum.dk | Simply.com A/S |
| hejedison.dk | Simply.com A/S |
| php-online.dk | Simply.com A/S |
| wpsandkassen.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 10:22:38 shown | 443ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 13:56:00 | 526ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:57:40 | 575ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-28 05:15:56 | 681ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-21 06:10:00 | 789ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-16 03:53:16 | 864ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 22:05:31 | 9919ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 00:10:49 | 650ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-03 23:37:08 | 1066ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-01 13:32:07 | 1951ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-18 13:33:54 | 866ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-14 11:13:29 | 8921ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 07:14:14 | 1527ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-23 12:04:02 | 1170ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 09:31:51 | 920ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-16 12:50:43 | 1416ms | 2 NS 2 A 1 MX | 🔓 Insecure |