b2b-byggeservice.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 August 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.215.122 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 46.30.215.122 | — | webcluster2.webpod16-cph3.one.com | AS51468 | One.com A/S | 46.30.208.0/21 | 🇩🇰 Denmark | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:111:80d6:452c:770:1fa | — | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| v=spf1 a mx include:_spf.google.com include:_custspf.one.com ~all |
| Policy | Record (b2b-byggeservice.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx include:_spf.google.com include:_custspf.one.com ~all |
| www | 46.30.215.122 2a02:2350:5:111:80d6:452c:770:1fa (AS51468) (address records, no CNAME) |
| www vs bare domain | Same network b2b-byggeservice.dk: 46.30.215.122 2a02:2350:5:111:80d6:452c:770:1fa (AS51468) www.b2b-byggeservice.dk: 46.30.215.122 2a02:2350:5:111:80d6:452c:770:1fa (AS51468) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| 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: 4/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026060901 |
| 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 | ONE.COM A/S |
| Registered | 2024-08-22 |
| Expires | 2027-08-21 (306d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:45:06 | 1636ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-10-04 04:34:50 | 518ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-30 13:53:03 | 954ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-24 07:16:15 | 2609ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-20 16:48:52 | 734ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-09-08 18:22:27 | 965ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-28 03:45:07 | 841ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-26 23:10:15 | 825ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-26 20:51:17 | 635ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-24 21:31:44 | 9829ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-24 13:59:27 | 1133ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-10 15:50:31 | 17350ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-08-08 14:39:51 | 1157ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-07-10 03:27:10 | 1280ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-27 06:31:56 | 630ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-26 07:07:28 | 1569ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-22 13:26:28 | 695ms | 2 NS 1 A 5 MX | 🔒 Secure |
| 2026-06-16 13:57:23 shown | 929ms | 2 NS 1 A 5 MX | 🔒 Secure |