holstrup-ts.dk is a .dk domain served by 3 nameservers (ns1.nordicnumber.com, ns2.nordicnumber.com, ns3.nordicnumber.com). It was registered on 27 May 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 76.76.21.21 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. The zone is not DNSSEC-signed, has no 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.nordicnumber.com | 91.198.138.46 | ns1.nordicnumber.com | AS51167 Contabo GmbH |
| ns2.nordicnumber.com | 91.198.138.47 | — | AS51167 Contabo GmbH |
| ns3.nordicnumber.com | 213.136.93.70 | ns3.nnhosting.eu | AS51167 Contabo GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 76.76.21.21 | 900s | — | AS16509 | Amazon.com, Inc. | 76.76.21.0/24 | 🇺🇸 United States | Walnut |
| TXT Record |
|---|
| google-site-verification=es6OJY22MUuC00L-k_JRilJXNbb1mOCvoA0gHlJdvAo |
| v=spf1 a mx ~all |
| Policy | Record (holstrup-ts.dk) |
|---|---|
| ~all (soft fail) | v=spf1 a mx ~all |
| www CNAME | cname.vercel-dns.com (all on vercel-dns.com) |
| www vs bare domain | Same network |
| 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 | 2016042622 |
| Primary NS (MNAME) | ns1.nordicnumber.com |
| Responsible (RNAME) | hostmaster@nordicnumber.com |
| Refresh | 900s |
| Retry | 600s |
| Expire | 900s |
| Minimum (neg-cache TTL) | 900s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2009-05-27 |
| Expires | 2027-05-31 (225d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-26 12:24:01 shown | 9654ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-09-06 03:39:25 | 12067ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-08-26 06:29:37 | 1056ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-06-28 21:07:21 | 3361ms | 3 NS 1 A 7 MX | 🔓 Insecure |
| 2026-06-17 13:59:35 | 4202ms | 3 NS 1 A 7 MX | 🔓 Insecure |