1sonderbro.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 8 October 2018 (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.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.102.88.132 | 43200s | — | AS47292 | Sentia Denmark A/S | 91.102.88.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| TXT Record |
|---|
| v=spf1 include:_custspf.one.com ~all |
| Policy | Record (1sonderbro.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.1sonderbro.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:dmarc@1sonderbro.dk |
| www CNAME | 1sonderbro.dk (all on 1sonderbro.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 |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 24F573980561755185B794745411B05D… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092701 |
| 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 | 2018-10-08 |
| Expires | 2029-10-31 (1108d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-27 07:55:29 shown | 1106ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-23 03:29:27 | 1259ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-13 20:59:28 | 2566ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-09 01:37:05 | 918ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-27 20:29:04 | 733ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-28 09:17:23 | 2859ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-10 09:49:38 | 4482ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-29 07:57:26 | 724ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-25 12:50:38 | 516ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 02:09:11 | 941ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 18:10:10 | 725ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 13:26:28 | 10269ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 13:13:02 | 995ms | 2 NS 1 A 4 MX | 🔒 Secure |