byggeri23.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 19 March 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by cloud7.spamtitan.com. The zone is DNSSEC-signed and validates, has no 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | 14400s | cloud7.spamtitan.com | 13.58.65.21 13.58.8.62 52.15.128.102 |
cloud7.spamtitan.com cloud7.spamtitan.com cloud7.spamtitan.com |
AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. |
| TXT Record |
|---|
| v=spf1 include:_spf_cd.spamtitan.com ip4:34.236.127.150 ip4:18.207.12.57 ip4:91.216.103.3 ip4:86.58.253.21 ip4:86.58.253.22 ip4:86.58.253.23 ip4:81.19.224.73 include:spf.mandrillapp.com ~all |
| Policy | Record (byggeri23.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf_cd.spamtitan.com ip4:34.236.127.150 ip4:18.207.12.57 ip4:91.216.103.3 ip4:86.58.253.21 ip4:86.58.253.22 ip4:86.58.253.23 ip4:81.19.224.73 include:spf.mandrillapp.com ~all |
| www | Address record (no CNAME) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026100201 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2020-03-19 |
| Expires | 2028-03-31 (531d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-04 09:43:59 shown | 521ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-10-02 12:33:41 | 370ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-23 11:21:38 | 663ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-12 14:35:17 | 606ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-09-06 22:56:51 | 723ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-11 04:41:09 | 4845ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-08-01 23:55:20 | 8635ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-07-01 11:45:24 | 1380ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-26 18:48:34 | 604ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 21:52:19 | 1033ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-23 09:55:31 | 1169ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 15:23:57 | 648ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 15:21:36 | 387ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-20 05:16:47 | 541ms | 2 NS 0 A 1 MX | 🔒 Secure |
| 2026-06-16 18:15:10 | 463ms | 2 NS 0 A 1 MX | 🔒 Secure |