1sundby.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 26 June 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.102.88.132 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mx1.pub.mailpod10-cph3.one.com, mx2.pub.mailpod10-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|
| ns01.one.com | — | — | — |
| ns02.one.com | — | — | — |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.102.88.132 | — | — | AS47292 | Sentia Denmark A/S | 91.102.88.0/21 | 🇩🇰 Denmark | — |
| www CNAME | 1sundby.dk (all on 1sundby.dk) → 91.102.88.132 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx2.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx3.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| SMTP _25._tcp.mx4.pub.mailpod10-cph3.one.com | DANE-EE · SPKI · SHA-256 | 411611ECE6466645A9E53512398A692D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026052801 |
| 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 | 2006-06-26 |
| Expires | 2027-06-30 (256d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 15:12:37 | 4372ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 07:22:20 | 466ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-30 00:31:04 | 2056ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-29 21:35:11 | 1575ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-20 10:01:01 | 9265ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-31 13:47:30 | 841ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-28 14:26:48 | 1030ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 05:33:03 | 879ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-20 15:44:58 | 507ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-19 20:48:44 | 1012ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 12:37:02 shown | 948ms | 2 NS 1 A 4 MX | 🔒 Secure |