rcs-it.dk is a .dk domain served by 2 nameservers (crystal.ns.cloudflare.com, jaziel.ns.cloudflare.com). It was registered on 27 May 2008 (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 rcsit-dk0i.mail.protection.outlook.com. The zone is of unknown DNSSEC status, 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 | 1800s | relayingsmtp.wtm-rcs.dk | AS47292 | Sentia Denmark A/S | 91.215.160.0/22 | 🇩🇰 Denmark | Silkeborg |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| TXT Record |
|---|
| MS=ms77458075 |
| 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-it.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-it.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:5ygyuzpu@ag.dmarcian-eu.com; ruf=mailto:dmarc-reports@rcs.dk; aspf=s; adkim=s; sp=quarantine; fo=1; ri=86400; pct=100 |
| www CNAME | rcs-it.dk (all on rcs-it.dk) → 91.215.161.69 (AS47292) |
| www vs bare domain | Same network |
| Wildcard | No |
DNS lookups: 6/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | broken trust chain resolving 'rcs-it.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2410308953 |
| Primary NS (MNAME) | crystal.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | ONE.COM A/S |
| Registered | 2008-05-27 |
| Expires | 2027-05-31 (224d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-24 00:08:31 | 910ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-19 00:18:39 | 1509ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-11 22:22:15 | 1851ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-06 18:05:53 | 2160ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-30 16:20:34 | 2260ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-26 10:04:23 | 2189ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-08-25 11:17:23 | 743ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-23 21:21:18 shown | 2245ms | 2 NS 1 A 1 MX | ❓ Unknown |
| 2026-07-13 19:15:32 | 2101ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-08 16:49:08 | 11023ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-27 20:19:15 | 1835ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-19 10:59:19 | 1201ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 12:06:44 | 1815ms | 2 NS 1 A 1 MX | 🔓 Insecure |