onlineadvertising.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 20 October 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.209.39.3 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mail.onlineadvertising.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 91.209.39.3 | 600s | — | AS62121 | Christian Ebsen ApS | 91.209.39.0/24 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 43200s | mail.onlineadvertising.dk | 91.209.39.3 | — | AS62121 Christian Ebsen ApS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 91.209.39.3 |
| 🔶 Autoconfig | 91.209.39.3 |
| TXT Record |
|---|
| v=spf1 ip4:91.209.39.0/24 ip4:195.41.131.33 ip4:194.192.14.71 ip4:80.196.101.134 -all |
| Policy | Record (onlineadvertising.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:91.209.39.0/24 ip4:195.41.131.33 ip4:194.192.14.71 ip4:80.196.101.134 -all |
| www | 91.209.39.3 (AS62121) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 0/10 · 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 | 2026092101 |
| 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 | 2006-10-20 |
| Expires | 2030-04-30 (1280d) |
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 |
|---|---|---|---|
| 2026-10-18 23:22:37 | 1749ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-13 15:09:21 | 1076ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 04:02:42 shown | 455ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 16:53:48 | 514ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 09:33:32 | 1136ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-10 03:40:50 | 503ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 14:43:51 | 583ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 12:44:46 | 2439ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 18:05:21 | 2602ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-21 09:21:20 | 932ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 21:44:22 | 452ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 13:41:28 | 1911ms | 2 NS 1 A 1 MX | 🔒 Secure |