siemlab.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 23 February 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.bsecure.dk. 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | — | mail.bsecure.dk | 161.35.201.194 2a03:b0c0:3:d0::16bc:2001 2a03:b0c0:3:d0::16bc:2002 |
mail.bsecure.dk mail.bsecure.dk — |
AS14061 DigitalOcean, LLC AS14061 DigitalOcean, LLC AS14061 DigitalOcean, LLC |
| TXT Record |
|---|
| v=spf1 mx a:mail.bsecure.dk -all |
| Policy | Record (siemlab.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a:mail.bsecure.dk -all |
| Policy | Record (_dmarc.siemlab.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc-rpt@bollers.dk; ruf=mailto:dmarc-rpt@bollers.dk; fo=1; aspf=s; adkim=s |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:dmarc-rpt@bollers.dk |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | letsencrypt.org |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves siemlab.dk: no address www.siemlab.dk: no address |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| 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| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.bsecure.dk | DANE-EE · SPKI · SHA-256 | CED8EAAC1EA87AF1EFD67EB44F68C432… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2025020800 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2022-02-23 |
| Expires | 2027-02-22 (128d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 10:07:58 | 701ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-02 19:20:33 | 1013ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-29 18:56:36 | 471ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-27 22:55:27 | 520ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-03 04:50:26 | 602ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-01 11:23:05 | 598ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-26 15:57:43 | 735ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-03 00:19:02 | 1102ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-25 12:37:52 | 791ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-24 22:32:10 | 642ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-22 16:11:03 | 1119ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 18:52:49 | 696ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 20:57:22 | 1938ms | 4 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-17 15:18:11 shown | 981ms | 4 NS 0 A 1 MX | 🔒 Secure |