berthelzen.dk is a .dk domain served by 2 nameservers (ns07.sac-it.dk, ns08.sac-it.dk). It was registered on 4 July 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by smtp.google.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns07.sac-it.dk | 85.235.243.63 | ns07.sac-it.dk | AS3308 Norlys Telco A/S |
| ns08.sac-it.dk | 128.76.60.63 | ns08.sac-it.dk | AS3292 TDC Holding A/S |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (berthelzen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| Policy | Record (_dmarc.berthelzen.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:6687b8e6ca02f@dmarc-dk.centerasecurity.com; |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves berthelzen.dk: no address www.berthelzen.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| — | 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 | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026101501 |
| Primary NS (MNAME) | ns07.sac-it.dk |
| Responsible (RNAME) | hostmaster@berthelzen.dk |
| Refresh | 10800s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | SAC-IT A/S |
| Registered | 2024-07-04 |
| Expires | 2027-07-03 (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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-15 03:05:27 shown | 1050ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-08 16:03:49 | 1011ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-10-01 14:13:43 | 405ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-24 12:55:48 | 686ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-18 20:23:07 | 1885ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-15 05:22:44 | 721ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-08 03:37:10 | 584ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-06 22:53:51 | 697ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-27 09:28:53 | 807ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-21 03:40:28 | 5200ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-13 02:55:45 | 1113ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-06 22:40:24 | 991ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-30 22:12:37 | 1179ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-23 19:42:37 | 908ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-16 21:01:47 | 9355ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-09 04:34:34 | 9200ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-03 11:04:38 | 571ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 09:52:19 | 578ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-22 10:29:38 | 2155ms | 2 NS 0 A 1 MX | ❓ Unknown |
| 2026-06-22 03:40:08 | 1118ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 06:29:18 | 1362ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-16 14:23:51 | 416ms | 2 NS 0 A 1 MX | 🔓 Insecure |