c1s.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 31 January 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.200.90.178 is hosted by Christian Ebsen ApS (AS62121) in Denmark. Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 193.200.90.178 | 600s | web6.e-studio.dk | AS62121 | Christian Ebsen ApS | 193.200.90.0/23 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod11-cph3.one.com | 104.37.34.230 | mx1.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod11-cph3.one.com | 104.37.34.231 | mx2.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod11-cph3.one.com | 104.37.34.232 | mx3.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod11-cph3.one.com | 104.37.34.233 | mx4.pub.mailpod11-cph3.one.com | AS51468 One.com A/S |
| Policy | Record (_dmarc.c1s.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | Address record (no CNAME) |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com | DANE-EE · SPKI · SHA-256 | 00E55642F312E05CDB899B1433EDF47F… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026060501 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2023-01-31 |
| Expires | 2027-01-30 (105d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-06 08:05:09 | 1627ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-11 06:33:00 | 796ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-07 21:57:38 | 9450ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-08 12:41:17 | 8972ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-06 05:01:20 | 1078ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-28 04:30:32 | 765ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 18:22:41 | 704ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-21 08:54:04 | 609ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-21 04:53:22 shown | 631ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 18:43:19 | 557ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 18:40:32 | 904ms | 2 NS 1 A 4 MX | 🔒 Secure |