zhangyu.dk is a .dk domain served by 2 nameservers (ns1.dnshotel.dk, ns2.dnshotel.dk). It was registered on 6 February 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 49.12.83.125 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.zhangyu.dk. The zone is not DNSSEC-signed, has no 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 |
|---|---|---|---|---|---|---|---|
| 49.12.83.125 | — | re03.azehosting.net | AS24940 | Hetzner Online GmbH | 49.12.0.0/15 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | — | mail.zhangyu.dk | 49.12.83.125 | re03.azehosting.net | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 ip4:49.12.83.125 include:spf.azehosting.net +a +mx include:spf.resellerhotel.dk ~all |
| Policy | Record (zhangyu.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:49.12.83.125 include:spf.azehosting.net +a +mx include:spf.resellerhotel.dk ~all |
| www CNAME | zhangyu.dk (all on zhangyu.dk) → 49.12.83.125 (AS24940) |
| 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: 6/10 · 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 | 2026060901 |
| Primary NS (MNAME) | ns1.dnshotel.dk |
| Responsible (RNAME) | morten@poulsen.org |
| Refresh | 3600s |
| Retry | 1200s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2025-02-06 |
| Expires | 2027-02-05 (105d) |
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 |
|---|---|---|---|
| 2026-10-12 20:10:19 | 753ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-11 17:58:30 | 1857ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-10 15:48:03 | 619ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-10-01 08:10:18 | 626ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-24 04:20:15 | 2482ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-19 01:50:05 | 13629ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-11 00:32:45 | 4905ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-27 04:03:56 | 4826ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 13:12:09 | 10810ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 08:49:55 | 8852ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-26 17:22:59 | 1459ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-23 20:12:26 | 1024ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-21 05:37:11 | 1880ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 00:46:36 | 4508ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:08:02 shown | 2256ms | 2 NS 1 A 1 MX | 🔓 Insecure |