hydro-con.dk is a .dk domain served by 2 nameservers (gloria.ns.cloudflare.com, tanner.ns.cloudflare.com). It was registered on 5 June 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.87.22 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.87.22 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.139.191 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3033::6815:5716 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::ac43:8bbf | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.87.22,172.67.139.191 ech=AEX+DQBBDgAgACANZM+CTR/lTdTIt8l/3eyRPRBobbO8BMGNZTdU5YzIJQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:5716,2606:4700:3033::ac43:8bbf |
| www CNAME | hydro-con.dk (all on hydro-con.dk) → 54.37.114.47 (AS16276) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | RSA · ~2048 bit | |
| s1 | s1.domainkey.u42990509.wl010.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u42990509.wl010.sendgrid.net | 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.
| 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 | 2409550961 |
| Primary NS (MNAME) | gloria.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-06-05 |
| Expires | 2027-06-04 (228d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 16:33:58 | 1251ms | 2 NS 1 A 5 MX | 🔓 Insecure |
| 2026-09-27 15:50:30 | 531ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-08-30 23:34:02 | 987ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-15 04:37:56 shown | 997ms | 2 NS 2 A 0 MX | 🔓 Insecure |
| 2026-07-03 13:01:23 | 1214ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-22 04:38:43 | 342ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-22 01:14:05 | 922ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-19 16:45:36 | 476ms | 2 NS 0 A 0 MX | 🔓 Insecure |
| 2026-06-17 15:31:54 | 1138ms | 2 NS 0 A 0 MX | 🔓 Insecure |