sys-adm.dk is a .dk domain served by 2 nameservers (duke.ns.cloudflare.com, kara.ns.cloudflare.com). It was registered on 27 November 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.198.79.3 is hosted by Amazon.com, Inc. (AS16509) in United States. Mail is handled by route2.mx.cloudflare.net, route1.mx.cloudflare.net and 1 more. The zone is DNSSEC-signed and validates, 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 |
|---|---|---|---|---|---|---|---|
| 216.198.79.3 | 300s | — | AS16509 | Amazon.com, Inc. | 216.198.79.0/24 | 🇺🇸 United States | — |
| 64.29.17.3 | 300s | — | AS16509 | Amazon.com, Inc. | 64.29.17.0/24 | 🇺🇸 United States | — |
| TXT Record |
|---|
| google-site-verification=-4WnRVp7g3AhGmW0SQcxfRp6sXu0YycmCF0rVmVrqoI |
| v=spf1 include:_spf.mx.cloudflare.net ~all |
| Policy | Record (sys-adm.dk) |
|---|---|
| ~all (soft fail) | v=spf1 include:_spf.mx.cloudflare.net ~all |
| www CNAME | web-developer-dk.vercel.app (all on vercel.app) |
| www vs bare domain | Same network sys-adm.dk: 216.198.79.195 64.29.17.195 (AS16509) www.sys-adm.dk: 216.198.79.67 64.29.17.67 (AS16509) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
DNS lookups: 1/10 · policy: ~all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route1.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route2.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 9BE5B7D47F9EFF930C11EB04D27CAE6B… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-TA · SPKI · SHA-256 | 59E738E674221702AF1EDB87C5200C1A… |
| SMTP _25._tcp.route3.mx.cloudflare.net | DANE-EE · SPKI · SHA-256 | 0F0C6C164A36F97E7B4C5A5B69D6F4F2… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2406725383 |
| Primary NS (MNAME) | duke.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2001-11-27 |
| Expires | 2028-12-31 (804d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 11:53:34 | 1421ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-10-01 22:19:52 | 892ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-30 22:19:05 | 888ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-15 01:28:56 | 1907ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-09-07 23:14:04 | 3281ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-30 06:18:58 | 805ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-29 01:26:03 | 2429ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-28 00:45:08 | 849ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-08-16 01:06:22 | 1821ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-07-22 06:07:19 | 2233ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-07-12 23:33:06 | 9610ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-28 08:53:05 | 1101ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-25 06:05:18 shown | 1183ms | 2 NS 2 A 3 MX | 🔒 Secure |
| 2026-06-23 16:34:47 | 1133ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-23 02:35:41 | 895ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 06:15:45 | 1157ms | 2 NS 2 A 3 MX | 🔒 Secure |