usefulgroup.dk is a .dk domain served by 3 nameservers (ns.zxcs.be, ns.zxcs.eu, ns.zxcs.nl). It was registered on 8 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.104.28.238 is hosted by Stichting DIGI NL (AS206281) in The Netherlands. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 185.104.28.238 | 86400s | redirectserver01.zxcs.nl | AS206281 | Stichting DIGI NL | 185.104.28.0/22 | 🇳🇱 The Netherlands | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a06:2ec0:1::ffed | 86400s | redirectserver01.zxcs.nl | AS206281 | Stichting DIGI NL | 2a06:2ec0:0:0:0:0:0:0/32 | 🇳🇱 The Netherlands | — |
| TXT Record |
|---|
| v=spf1 a mx -all |
| Policy | Record (usefulgroup.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx -all |
| Policy | Record (_dmarc.usefulgroup.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s |
| www | 185.104.28.238 2a06:2ec0:1::ffed (AS206281) (address records, no CNAME) |
| www vs bare domain | Same network usefulgroup.dk: 185.104.28.238 2a06:2ec0:1::ffed (AS206281) www.usefulgroup.dk: 185.104.28.238 2a06:2ec0:1::ffed (AS206281) |
| Wildcard | No |
DNS lookups: 2/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2026040814 |
| Primary NS (MNAME) | ns.zxcs.nl |
| Responsible (RNAME) | hostmaster@usefulgroup.dk |
| Refresh | 600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2026-04-08 |
| Expires | 2027-04-07 (170d) |
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 |
|---|---|
| outofuse.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 13:31:28 shown | 1955ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-30 10:27:59 | 772ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-30 08:57:10 | 2444ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-23 21:43:35 | 2544ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-09-17 03:05:15 | 943ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-08-28 10:06:13 | 1299ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-07-02 13:37:41 | 1562ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-24 03:19:35 | 662ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-22 15:49:38 | 3311ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-21 23:12:06 | 945ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-21 19:55:12 | 731ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-21 11:29:29 | 1114ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 22:02:00 | 2178ms | 3 NS 1 A 0 MX | 🔓 Insecure |
| 2026-06-18 07:11:37 | 1839ms | 3 NS 1 A 0 MX | 🔓 Insecure |