core4it.dk is a .dk domain served by 4 nameservers (dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and 1 more). It was registered on 12 August 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.157.26.135 is hosted by Amazon.com, Inc. (AS16509) in Germany. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is of unknown DNSSEC status, 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns1.p01.nsone.net | — | — | — |
| dns2.p01.nsone.net | — | — | — |
| dns3.p01.nsone.net | — | — | — |
| dns4.p01.nsone.net | — | — | — |
| TXT Record |
|---|
| protonmail-verification=5be2cc634ceecd63fc8ded303063c7a0e6137882 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (core4it.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.core4it.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www | 35.157.26.135 63.176.8.218 (AS16509) (address records, no CNAME) |
| www vs bare domain | Same network core4it.dk: 35.157.26.135 63.176.8.218 (AS16509) www.core4it.dk: 35.157.26.135 63.176.8.218 (AS16509) |
| Wildcard | No |
DNS lookups: 2/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mail.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 6111A5698D23C89E09C36FF833C1487E… |
| SMTP _25._tcp.mailsec.protonmail.ch | DANE-EE · SPKI · SHA-256 | 76BB66711DA416433CA890A5B2E5A053… |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: failure |
| Field | Value |
|---|---|
| Serial | 1765711048 |
| Primary NS (MNAME) | dns1.p01.nsone.net |
| Responsible (RNAME) | domains+netlify@netlify.com |
| Refresh | 43200s |
| Retry | 7200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2025-08-12 |
| Expires | 2027-08-11 (292d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 15:07:51 | 633ms | 4 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-31 15:17:09 | 2593ms | 4 NS 2 A 2 MX | 🔓 Insecure |
| 2026-08-25 22:40:40 | 9627ms | 4 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-02 12:16:40 | 2801ms | 4 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-25 07:32:53 | 1131ms | 4 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-22 19:17:20 | 902ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 22:25:18 shown | 902ms | 4 NS 2 A 2 MX | ❓ Unknown |