rezonanz.dk is a .dk domain served by 2 nameservers (dns-c.duelhost.dk, dns-d.duelhost.dk). It was registered on 28 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.242.131.100 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mail.rezonanz.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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| dns-c.duelhost.dk | 142.132.130.246 | cde2.duelhost.dk | AS24940 Hetzner Online GmbH |
| dns-d.duelhost.dk | 195.201.247.4 | dns-d.duelhost.dk | AS24940 Hetzner Online GmbH |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 195.242.131.100 | 300s | web10.e-studio.dk | AS62121 | Christian Ebsen ApS | 195.242.130.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.rezonanz.dk | 195.242.131.100 | web10.e-studio.dk | AS62121 Christian Ebsen ApS |
| TXT Record |
|---|
| google-site-verification=AX0HuF7H1z2o2rKCI1z1r4Rge9_LF5EURhbCI2osN24 |
| v=spf1 a mx include:relay.mailchannels.net include:_spf.e-studio.dk -all |
| Policy | Record (rezonanz.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:relay.mailchannels.net include:_spf.e-studio.dk -all |
| Policy | Record (_dmarc.rezonanz.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; sp=none |
| www | 195.242.131.100 (AS62121) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | 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: 4/10 · 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 | 2026091800 |
| Primary NS (MNAME) | dns-c.duelhost.dk |
| Responsible (RNAME) | hostmaster@rezonanz.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2023-06-28 |
| Expires | 2027-06-27 (251d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-19 02:57:54 | 427ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-18 02:20:09 | 893ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-17 02:02:16 | 505ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-16 01:34:50 | 682ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-14 22:42:24 | 663ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-13 22:31:43 | 699ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-12 16:03:03 | 1671ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 14:13:54 | 1363ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-10 13:19:57 | 706ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-09 07:20:20 | 515ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-08 12:47:53 | 634ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-07 12:44:52 | 495ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-06 11:57:03 | 4708ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-05 07:35:46 | 437ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-04 07:20:13 | 1737ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-03 07:18:44 | 605ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-02 07:17:56 | 1443ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 07:10:15 | 628ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 04:39:43 | 703ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 04:25:54 | 2075ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-29 04:15:10 | 577ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-28 04:02:25 | 611ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-27 03:42:38 | 533ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-26 03:27:29 | 583ms | 5 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-20 10:07:15 shown | 728ms | 2 NS 1 A 1 MX | 🔓 Insecure |