sysimprove.dk is a .dk domain served by 2 nameservers (chan.ns.cloudflare.com, woz.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.67.107 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.sysimprove.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.67.107 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.221.96 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.sysimprove.dk | 195.201.240.207 | static.207.240.201.195.clients.your-server.de | AS24940 Hetzner Online GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | mail.sysimprove.dk → 195.201.240.207 |
| 🔶 Autoconfig | mail.sysimprove.dk → 195.201.240.207 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3035::6815:436b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3036::ac43:dd60 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.67.107,172.67.221.96 ech=AEX+DQBBFgAgACBwRimQJ/jLhGPXdXsNphsNJoIGwS/Fu+yHsbRy9w0EbAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:436b,2606:4700:3036::ac43:dd60 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 50 | 443 | mail.sysimprove.dk |
| TXT Record |
|---|
| v=spf1 include:eu.mailgun.org ~all |
| Policy | Record (sysimprove.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:eu.mailgun.org ~all |
| Policy | Record (_dmarc.sysimprove.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:0f6bea0e7eb24c54b7f10c99e7e62863@dmarc-reports.cloudflare.net |
| www | 104.21.67.107 172.67.221.96 2606:4700:3035::6815:436b 2606:4700:3036::ac43:dd60 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network sysimprove.dk: 104.21.67.107 172.67.221.96 2606:4700:3035::6815:436b 2606:4700:3036::ac43:dd60 (AS13335) www.sysimprove.dk: 104.21.67.107 172.67.221.96 2606:4700:3035::6815:436b 2606:4700:3036::ac43:dd60 (AS13335) |
| Wildcard | No |
DNS lookups: 2/10 · 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 | 2410848037 |
| Primary NS (MNAME) | chan.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 10:10:54 | 1709ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 07:33:53 | 703ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-28 04:04:42 | 715ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 03:41:01 | 680ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-15 16:17:13 | 937ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 15:36:15 | 7574ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 13:39:06 | 1260ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-02 02:01:52 shown | 2028ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-27 21:16:33 | 1987ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 14:00:11 | 950ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-17 12:11:15 | 1217ms | 2 NS 2 A 1 MX | 🔓 Insecure |