rusfort.dk is a .dk domain served by 2 nameservers (cory.ns.cloudflare.com, grace.ns.cloudflare.com). It was registered on 12 February 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.70.30 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.gestaltservers.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest 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 |
|---|---|---|---|---|---|---|---|
| 104.21.70.30 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.218.207 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.gestaltservers.com | 86.52.28.55 | 86-52-28-55.norlyscustomer.net | AS39642 Sinal A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.gestaltservers.com → 86.52.28.55 |
| 🔶 Autoconfig | mail.gestaltservers.com → 86.52.28.55 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:461e | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3031::ac43:dacf | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.70.30,172.67.218.207 ech=AEX+DQBBxgAgACCpfY42aKPSU/Ze6KdtiPz0kQI3zTq96v26cYYAt/UEAQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:461e,2606:4700:3031::ac43:dacf |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imaps._tcp | 0 | 1 | 993 | mail.gestaltservers.com |
| TXT Record |
|---|
| v=spf1 include:mailgun.org ~all |
| Policy | Record (rusfort.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:mailgun.org ~all |
| Policy | Record (_dmarc.rusfort.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:e54b0fc6@dmarc.mailgun.org,mailto:xczbkgxe2x5@inbox.ondmarc.com; ruf=mailto:e54b0fc6@dmarc.mailgun.org,mailto:xczbkgxe2x5@inbox.ondmarc.com; |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 12937113655084103439 |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:postmaster@rusfort.dk |
| www | 104.21.70.30 172.67.218.207 2606:4700:3030::6815:461e 2606:4700:3031::ac43:dacf (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 5/10 · 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 | 2414787538 |
| Primary NS (MNAME) | cory.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2018-02-12 |
| Expires | 2027-02-28 (129d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 23:24:58 shown | 551ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-26 00:17:34 | 671ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-16 20:40:13 | 959ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 06:22:45 | 1684ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-26 08:25:51 | 615ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 04:24:57 | 571ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 04:03:54 | 762ms | 4 NS 1 A 1 MX | 🔒 Secure |