sa21.dk is a .dk domain served by 2 nameservers (josephine.ns.cloudflare.com, leo.ns.cloudflare.com). It was registered on 29 January 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by sa21-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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.
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| TXT Record |
|---|
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (sa21.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.sa21.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:51653ea52d4a41f5a066a07d464b73c4@dmarc-reports.cloudflare.net |
| www | 104.21.39.240 172.67.150.146 2606:4700:3030::6815:27f0 2606:4700:3030::ac43:9692 (AS13335) (address records, no CNAME) |
| www vs bare domain | Only www resolves sa21.dk: no address (all like this)www.sa21.dk: 104.21.39.240 172.67.150.146 2606:4700:3030::6815:27f0 2606:4700:3030::ac43:9692 (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.sa21.dk | 3qbzXZjCqFRI47Kjy7UCkpYSUzWupZ3Q2LAG_BFPQC8 |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2412917555 |
| Primary NS (MNAME) | josephine.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 | 2012-01-29 |
| Expires | 2029-01-31 (832d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-05 00:09:00 | 1273ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-02 00:03:24 | 2186ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 23:45:05 | 2545ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-21 06:48:04 | 1459ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-16 07:32:09 | 1378ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-12 12:51:28 | 2437ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-10 02:45:26 | 1660ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-08 08:24:42 | 1248ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-05 05:02:19 | 1999ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 10:13:31 | 1691ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-24 18:09:54 | 1056ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-23 17:15:56 shown | 3285ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-14 22:27:08 | 3381ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-06 15:11:27 | 17422ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-19 10:20:40 | 9552ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-17 01:27:20 | 2149ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-06 00:32:54 | 2720ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 13:08:58 | 806ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-29 10:42:23 | 1135ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-28 17:27:27 | 959ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 20:16:16 | 1350ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 21:33:06 | 2932ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 11:11:15 | 897ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 18:12:28 | 5702ms | 2 NS 0 A 1 MX | 🔒 Secure |