rcsbusinessmessaging.dk is a .dk domain served by 2 nameservers (ns1.nextra.no, ns2.nextra.no). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by .. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns1.nextra.no | 148.122.208.98 | ns1.nextra.no | AS2119 Telenor Norge AS |
| ns2.nextra.no | 148.122.161.2 | ns2.nextra.no | AS2119 Telenor Norge AS |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | . Null MX — domain accepts no email (RFC 7505) | |||
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (rcsbusinessmessaging.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves rcsbusinessmessaging.dk: no address www.rcsbusinessmessaging.dk: no address |
| Wildcard | No |
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | resolution failed: ncache nxrrset |
| Field | Value |
|---|---|
| Serial | 2026090701 |
| Primary NS (MNAME) | ns1.nextra.no |
| Responsible (RNAME) | hostmaster@telenor.net |
| Refresh | 3600s |
| Retry | 600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 3600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 14:10:12 shown | 765ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-30 13:32:29 | 505ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-07 17:54:29 | 1543ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 10:40:21 | 744ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-07-22 16:18:11 | 1231ms | 3 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 13:03:22 | 2679ms | 3 NS 1 A 2 MX | 🔓 Insecure |