rcs-transport.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 February 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.215.161.69 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mx1.mtaroutes.com, mx2.mtaroutes.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 |
|---|---|---|---|---|---|---|---|
| 91.215.161.69 | 3200s | relayingsmtp.wtm-rcs.dk | AS47292 | Sentia Denmark A/S | 91.215.160.0/22 | 🇩🇰 Denmark | Silkeborg |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | rcs-transport.dk → 91.215.161.69 |
| 🔶 Autoconfig | rcs-transport.dk → 91.215.161.69 |
| TXT Record |
|---|
| v=spf1 a mx include:spf.mtaroutes.com include:spf.protection.outlook.com include:_custspf.one.com ip4:91.215.163.48/29 ip4:91.215.161.24/29 -all |
| Policy | Record (rcs-transport.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx include:spf.mtaroutes.com include:spf.protection.outlook.com include:_custspf.one.com ip4:91.215.163.48/29 ip4:91.215.161.24/29 -all |
| Policy | Record (_dmarc.rcs-transport.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:5ygyuzpu@ag.dmarcian-eu.com; ruf=mailto:dmarc-reports@rcs.dk; aspf=s; adkim=s; sp=quarantine; fo=1; ri=86400; pct=25 |
| www CNAME | rcs-transport.dk (all on rcs-transport.dk) → 91.215.161.69 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 6/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.rcs-transport.dk | rcs-transport.dk |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.mtaroutes.com | DANE-EE · SPKI · SHA-256 | A10EC56F992E0E0C5B5A3860F281ADAF… |
| SMTP _25._tcp.mx2.mtaroutes.com | DANE-EE · SPKI · SHA-256 | A10EC56F992E0E0C5B5A3860F281ADAF… |
| SMTP _25._tcp.mx3.mtaroutes.com | DANE-EE · SPKI · SHA-256 | A10EC56F992E0E0C5B5A3860F281ADAF… |
| SMTP _25._tcp.mx4.mtaroutes.com | DANE-EE · SPKI · SHA-256 | A10EC56F992E0E0C5B5A3860F281ADAF… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092101 |
| 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 | 2016-02-16 |
| Expires | 2028-02-29 (489d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-09 14:48:08 | 3514ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-26 03:56:43 | 954ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 02:55:27 shown | 1562ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-26 12:55:38 | 982ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-26 08:43:15 | 1501ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-01 18:39:41 | 898ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-28 05:35:29 | 1593ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-23 04:47:19 | 1080ms | 2 NS 1 A 4 MX | ⚠️ Bogus |
| 2026-06-23 02:11:41 | 7034ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-22 23:26:48 | 929ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 18:02:23 | 1635ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-17 12:21:59 | 991ms | 2 NS 1 A 4 MX | 🔒 Secure |