thielemann.dk is a .dk domain served by 2 nameservers (ns1.businessdns.dk, ns2.businessdns.dk). It was registered on 14 August 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.191.113.172 is hosted by AURA Fiber A/S (AS204274) in Denmark. Mail is handled by efa01.businessdns.dk, mx-backup.businessdns.dk and 1 more. The zone is not DNSSEC-signed, has no 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.businessdns.dk | 85.191.113.163 | ns1.businessdns.dk | AS204274 AURA Fiber A/S |
| ns2.businessdns.dk | 85.191.113.164 | ns2.businessdns.dk | AS204274 AURA Fiber A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 85.191.113.172 | 3600s | 85.191.113.172.static.dhcp.aura-net.dk | AS204274 | AURA Fiber A/S | 85.191.0.0/17 | 🇩🇰 Denmark | Brabrand |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 86400s | efa01.businessdns.dk | 85.191.113.182 | efa01.businessdns.dk | AS204274 AURA Fiber A/S |
| 10 | 86400s | mx-backup.businessdns.dk | 85.184.165.70 85.191.113.183 |
85.184.165.70.static.dhcp.aura-net.dk mailgate01.businessdns.dk |
AS204274 AURA Fiber A/S AS204274 AURA Fiber A/S |
| 50 | 86400s | ardbeg.businessdns.dk | 85.191.113.180 | ardbeg.businessdns.dk | AS204274 AURA Fiber A/S |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 100 | 443 | mail.businessdns.dk |
| TXT Record |
|---|
| v=spf1 include:spf.businessdns.dk -all |
| Policy | Record (thielemann.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.businessdns.dk -all |
| www | 85.191.113.172 (AS204274) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| s1 | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 2026092317 |
| Primary NS (MNAME) | ns1.businessdns.dk |
| Responsible (RNAME) | hostmaster@businessdns.dk |
| Refresh | 3600s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 84600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-08-14 |
| Expires | 2027-08-31 (317d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 23:15:46 | 500ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-16 23:05:37 | 1265ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-15 20:01:21 | 468ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-14 18:03:19 | 1052ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-13 14:48:30 | 1697ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-12 12:27:19 | 1322ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-11 12:09:46 | 1399ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-10 05:51:42 | 679ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-09 04:56:22 | 2598ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-08 04:53:33 | 969ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-07 04:52:04 | 563ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-06 04:47:07 | 477ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-05 04:44:56 | 679ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-04 04:38:48 | 1205ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-03 04:37:06 | 776ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-02 04:35:33 | 383ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-10-01 04:26:58 | 681ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-30 17:40:08 | 1207ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-29 17:30:52 | 1849ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-28 17:17:31 | 642ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-27 17:09:23 | 628ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-26 17:04:55 | 627ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-25 16:56:15 | 805ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-24 16:38:11 | 1025ms | 2 NS 1 A 3 MX | 🔓 Insecure |
| 2026-09-23 16:07:24 shown | 9441ms | 2 NS 1 A 3 MX | 🔓 Insecure |