usefulplanet.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 November 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.104.83.156 is hosted by AURA Fiber A/S (AS204274) in Denmark. Mail is handled by mx.upnavigator.dk. 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 |
|---|---|---|---|---|---|---|---|
| 87.104.83.156 | 3600s | mx.upnavigator.dk | AS204274 | AURA Fiber A/S | 87.104.64.0/18 | 🇩🇰 Denmark | Hørning |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx.upnavigator.dk | 87.104.83.156 | mx.upnavigator.dk | AS204274 AURA Fiber A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | usefulplanet.dk → 87.104.83.156 |
| 🔶 Autoconfig | usefulplanet.dk → 87.104.83.156 |
| TXT Record |
|---|
| v=spf1 a mx a:mx.upnavigator.dk ip4:87.104.83.156 include:_custspf.one.com ~all |
| Policy | Record (usefulplanet.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx a:mx.upnavigator.dk ip4:87.104.83.156 include:_custspf.one.com ~all |
| Policy | Record (_dmarc.usefulplanet.dk) |
|---|---|
| p=quarantine | v=DMARC1;p=quarantine;sp=quarantine;pct=100;rua=mailto:info@upnavigator.dk;ruf=mailto:info@upnavigator.dk;rf=afrf;ri=86400;fo=1 |
| www | 87.104.83.156 (AS204274) (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 |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | RSA · ~1024 bit below 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| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.usefulplanet.dk | usefulplanet.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092001 |
| 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 | 2004-11-22 |
| Expires | 2026-11-30 (44d) |
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).
| Domain | Registrar |
|---|---|
| dukketeatret.dk | Punktum dk A/S (direct) |
| dykkersmeden.dk | ONE.COM A/S |
| im-healing.dk | ONE.COM A/S |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-29 15:04:54 shown | 1906ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 14:10:46 | 948ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 02:40:38 | 864ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 12:08:09 | 816ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-03 01:07:17 | 20579ms | 2 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-03 00:33:19 | 3052ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 07:20:30 | 779ms | 2 NS 1 A 1 MX | 🔒 Secure |