jensstein.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 6 February 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 89.23.255.4 is hosted by Fiberby ApS (AS42541) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 89.23.255.4 | — | 89-23-255-4.ip4.fiberby.net | AS42541 | Fiberby ApS | 89.23.224.0/19 | 🇩🇰 Denmark | Copenhagen |
| TXT Record |
|---|
| google-site-verification=7A9_03yPD-P6GxmO2mit1aDAVcgP9zlUE7yEvh1ewTg |
| protonmail-verification=c96aa585315695c21a29576bc517e823c7ce1462 |
| v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (jensstein.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.protonmail.ch ~all |
| Policy | Record (_dmarc.jensstein.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| www CNAME | jensstein.dk (all on jensstein.dk) → 89.23.255.4 (AS42541) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
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 | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026051700 |
| Primary NS (MNAME) | ns1.simply.com |
| Responsible (RNAME) | hostmaster@simply.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2016-02-06 |
| Expires | 2031-02-28 (1589d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-13 05:47:05 | 2039ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-30 22:13:40 | 780ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-26 11:33:53 | 838ms | 4 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 12:22:00 shown | 2876ms | 4 NS 1 A 2 MX | 🔒 Secure |