postbrev.dk is a .dk domain served by 5 nameservers (ns1pri.webhosting.dk, ns2.mywebtonet.com, ns2.webhosting.dk and 2 more). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.228.49.194 is hosted by Altibox Danmark AS (AS214875) in Denmark. Mail is handled by smtp.rmus.me. The zone is DNSSEC-signed and validates, has no 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 |
|---|---|---|---|---|---|---|---|
| 188.228.49.194 | 600s | 188.228.49.194.dynamic.altibox.net | AS214875 | Altibox Danmark AS | 188.228.48.0/23 | 🇩🇰 Denmark | Ikast |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | smtp.rmus.me | 188.228.49.194 | 188.228.49.194.dynamic.altibox.net | AS214875 Altibox Danmark AS |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | postbrev.dk → 188.228.49.194 |
| 🔶 Autoconfig | postbrev.dk → 188.228.49.194 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | webmail.postbrev.dk.postbrev.dk |
| TXT Record |
|---|
| v=spf1 include:spf.webmail.rmus.me ptr ip4:188.228.49.194/20 -all |
| Policy | Record (postbrev.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.webmail.rmus.me ptr ip4:188.228.49.194/20 -all |
| www | 188.228.49.194 (AS214875) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
DNS lookups: 3/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.postbrev.dk | postbrev.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 3002260898 |
| Primary NS (MNAME) | ns1pri.webhosting.dk |
| Responsible (RNAME) | hostmaster@webhosting.dk |
| Refresh | 21600s |
| Retry | 3600s |
| Expire | 14515200s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 18:36:38 | 1928ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 07:41:30 | 1250ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 03:58:39 | 703ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-18 13:14:57 shown | 1364ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-27 09:41:46 | 831ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-24 15:34:50 | 2991ms | 5 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-18 03:31:09 | 1455ms | 5 NS 1 A 1 MX | 🔒 Secure |