grayriver.dk is a .dk domain served by 2 nameservers (dean.ns.cloudflare.com, kim.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.25.41 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mxa.mailgun.org, mxb.mailgun.org. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.25.41 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.222.171 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mxa.mailgun.org | 34.36.182.139 | 139.182.36.34.bc.googleusercontent.com | AS396982 Google LLC |
| 10 | 300s | mxb.mailgun.org | 34.149.254.5 | 5.254.149.34.bc.googleusercontent.com | AS396982 Google LLC |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:1929 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::ac43:deab | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.25.41,172.67.222.171 ech=AEX+DQBBqAAgACDBB0Q0Auri5G7As9fdhL/yx1v6yDdyl+glZpuipaw7EwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1929,2606:4700:3035::ac43:deab |
| TXT Record |
|---|
| google-site-verification=ffuFBbi9ODrvlNZN3xzCw_BQmSNDQVlh0HGuQXn_XPQ |
| v=spf1 include:mailgun.org ~all |
| Policy | Record (grayriver.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:mailgun.org ~all |
| www | 104.21.25.41 172.67.222.171 2606:4700:3031::6815:1929 2606:4700:3035::ac43:deab (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network grayriver.dk: 104.21.25.41 172.67.222.171 2606:4700:3031::6815:1929 2606:4700:3035::ac43:deab (AS13335) www.grayriver.dk: 104.21.25.41 172.67.222.171 2606:4700:3031::6815:1929 2606:4700:3035::ac43:deab (AS13335) |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| k1 | — | RSA · ~1024 bit below 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: 5/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.grayriver.dk | NiDoqNtqHTz1-gFhfieI11BGZzvURvnb5cuGcnrsvoE |
| TXT | _acme-challenge.grayriver.dk | y9z4WBS09Pw204DNzP1v7FpLybGGUrGTTkQ1_2J7L_E |
| 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 | 2415498898 |
| Primary NS (MNAME) | dean.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 13:50:50 | 546ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 03:50:07 | 2546ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-29 05:44:16 | 2098ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-24 04:04:41 | 726ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-22 12:01:29 shown | 1092ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-13 23:23:36 | 754ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-31 22:47:57 | 1095ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-25 11:37:21 | 1341ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-07-01 23:50:27 | 1554ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-06-17 09:47:38 | 711ms | 2 NS 2 A 2 MX | 🔓 Insecure |