nielssp.dk is a .dk domain served by 2 nameservers (hans.ns.cloudflare.com, ingrid.ns.cloudflare.com). It was registered on 7 October 2014 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 149.28.228.225 is hosted by The Constant Company, LLC (AS20473) in United States. Mail is handled by mail.nielssp.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 149.28.228.225 | 300s | mail.nielssp.dk | AS20473 | The Constant Company, LLC | 149.28.128.0/17 | 🇺🇸 United States | Piscataway |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.nielssp.dk | 149.28.228.225 | mail.nielssp.dk | AS20473 The Constant Company, LLC |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 149.28.228.225 |
| 🔶 Autoconfig | 149.28.228.225 |
| TXT Record |
|---|
| v=spf1 a:mail.nielssp.dk ip4:149.28.228.225 -all |
| Policy | Record (nielssp.dk) |
|---|---|
| -all (hard fail) | v=spf1 a:mail.nielssp.dk ip4:149.28.228.225 -all |
| Policy | Record (_dmarc.nielssp.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; rua=mailto:postmaster@nielssp.dk |
| www | 149.28.228.225 (AS20473) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.nielssp.dk | QI335sEcgwM5QJGJ2vwubPRqb54hYQUuksAJEKW6Qjw |
| TXT | _acme-challenge.nielssp.dk | Xmeyu4vOLNFNRDmRgRYIq_15vzqjVXqOMJN2go1glf0 |
| 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 | 2415603920 |
| Primary NS (MNAME) | hans.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2014-10-07 |
| Expires | 2026-10-31 (9d) |
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 |
|---|---|
| apakoh.dk | Punktum dk A/S (direct) |
| hvadsigerbo.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 11:13:13 | 579ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 02:18:46 | 527ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 12:49:49 | 841ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-23 12:03:30 shown | 694ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-20 20:32:06 | 1310ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-18 17:25:07 | 2061ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-11 14:29:57 | 1770ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-04 09:41:29 | 631ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-31 15:50:19 | 1470ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-28 13:10:27 | 1202ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-27 12:42:21 | 914ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-24 13:16:26 | 1176ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-21 02:04:06 | 5498ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-08 20:10:47 | 1457ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 16:11:15 | 2139ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 14:34:04 | 2070ms | 2 NS 1 A 1 MX | 🔓 Insecure |