ersttest.dk is a .dk domain served by 2 nameservers (lakas.ns.cloudflare.com, rosemary.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by ersttest-dk.t-v1.mx.microsoft. 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 → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms19620933 |
| v=spf1 ip4:37.49.142.150 ip4:37.49.142.137 ip4:37.49.142.162 ip4:87.63.97.30 ip4:87.63.97.8/29 ip4:185.153.154.186 include:spf.protection.outlook.com include:o._spf.hostedsepo.dk mx -all |
| Policy | Record (ersttest.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:37.49.142.150 ip4:37.49.142.137 ip4:37.49.142.162 ip4:87.63.97.30 ip4:87.63.97.8/29 ip4:185.153.154.186 include:spf.protection.outlook.com include:o._spf.hostedsepo.dk mx -all |
| Policy | Record (_dmarc.ersttest.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@ersttest.dk, mailto:dmarc_agg@vali.email; ruf=mailto:dmarc@ersttest.dk; fo=1 |
| www | Exists, no address |
| www vs bare domain | Neither resolves ersttest.dk: no address www.ersttest.dk: no address |
| 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: 3/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.ersttest.dk | 3u7oyIoZgWm78uu7GbvAO_2jv65dd3P4k0K3k-k00w0 |
| TXT | _acme-challenge.ersttest.dk | CDdnYEsrdGgeXHXVUhAY8rYqLrEM-wy9q89baAqdkTY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.ersttest-dk.t-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | EA7A25255D111FC3CE4CB8FABE3ADF9C… |
| SMTP _25._tcp.ersttest-dk.t-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 803F7447CC75B208DBCA042346F5D8DF… |
| SMTP _25._tcp.ersttest-dk.t-v1.mx.microsoft | DANE-TA · Full cert · SHA-256 | C1AD7778796D20BCA65C889A26550211… |
| SMTP _25._tcp.ersttest-dk.t-v1.mx.microsoft | DANE-EE · SPKI · SHA-256 | 54883CC5F1849331E6BF5002C3129D20… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2411231135 |
| Primary NS (MNAME) | lakas.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 09:40:18 | 2378ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-30 09:58:36 | 840ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-21 00:21:36 | 919ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-17 19:59:08 | 1074ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-27 18:47:05 | 675ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 18:31:56 shown | 860ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-07 03:00:46 | 1346ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-18 00:39:19 | 1554ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-11 22:55:00 | 9316ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 01:33:24 | 10008ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-26 10:57:37 | 1075ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 11:39:59 | 1286ms | 2 NS 0 A 1 MX | ⚠️ Bogus |
| 2026-06-22 07:48:04 | 1168ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 17:56:54 | 1138ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 08:16:01 | 2588ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 08:15:49 | 1125ms | 2 NS 0 A 1 MX | 🔒 Secure |