seis-sustain.dk is a .dk domain served by 2 nameservers (fatima.ns.cloudflare.com, ryan.ns.cloudflare.com). It was registered on 2 July 2026 (WHOIS) and first appeared in the .dk zone on 3 July 2026. Its website address 104.21.72.206 is hosted by Cloudflare, Inc. (AS13335). The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 104.21.72.206 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.187.84 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.72.206 |
| 🔶 Autoconfig | 104.21.72.206 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3034::ac43:bb54 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:48ce | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.72.206,172.67.187.84 ech=AEX+DQBBpwAgACAytPH2mEcSKDwfLcyxmX3bytx0Nfa2n8mQsRbgu4AsIAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:bb54,2606:4700:3037::6815:48ce |
| www | 104.21.72.206 172.67.187.84 2606:4700:3034::ac43:bb54 2606:4700:3037::6815:48ce (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network seis-sustain.dk: 104.21.72.206 172.67.187.84 2606:4700:3034::ac43:bb54 2606:4700:3037::6815:48ce (AS13335) www.seis-sustain.dk: 104.21.72.206 172.67.187.84 2606:4700:3034::ac43:bb54 2606:4700:3037::6815:48ce (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2416332212 |
| Primary NS (MNAME) | fatima.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 | 2026-07-02 |
| Expires | 2027-07-01 (256d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 23:01:47 shown | 1743ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-30 22:56:36 | 734ms | 2 NS 2 A 0 MX | 🔒 Secure |
| 2026-09-24 21:25:29 | 381ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-09-07 21:44:18 | 486ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-08-26 15:50:49 | 460ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-17 00:04:21 | 555ms | 3 NS 0 A 0 MX | 🔒 Secure |
| 2026-07-10 20:03:14 | 847ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-08 13:43:49 | 999ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-07 02:04:27 | 734ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-05 01:25:07 | 493ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-03 23:57:07 | 949ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-03 22:39:28 | 2426ms | 1 NS 0 A 0 MX | ❓ Unknown |
| 2026-07-03 08:32:10 | 1509ms | 1 NS 0 A 0 MX | ❓ Unknown |