frbpost.dk is a .dk domain served by 2 nameservers (ns01.dansknet.dk, ns02.dansknet.dk). It was registered on 6 May 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.233.225.5 is hosted by DanskNet A/S (AS35158) in Denmark. Mail is handled by mx01.dansknet.dk. 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.
| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns01.dansknet.dk | 85.233.224.58 | ns01.dansknet.dk | AS35158 DanskNet A/S |
| ns02.dansknet.dk | 85.233.225.242 | ns02.dansknet.dk | AS35158 DanskNet A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 85.233.225.5 | 3600s | asmtp.dansknet.dk | AS35158 | DanskNet A/S | 85.233.224.0/19 | 🇩🇰 Denmark | Frederiksberg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mx01.dansknet.dk | 85.233.225.7 | mx01.dansknet.dk | AS35158 DanskNet A/S |
| TXT Record |
|---|
| v=spf1 ip4:85.233.224.0/23 -all |
| Policy | Record (frbpost.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:85.233.224.0/23 -all |
| Policy | Record (_dmarc.frbpost.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:dmarc@dansknet.dk; |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve (all like this) |
| Wildcard | No |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~2048 bit |
DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.
DNS lookups: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2024053251 |
| Primary NS (MNAME) | ns01.dansknet.dk |
| Responsible (RNAME) | noc@dansknet.dk |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 3600000s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-05-06 |
| Expires | 2027-04-30 (195d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 03:22:29 | 863ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-16 02:52:44 | 1163ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-10 19:10:57 | 1682ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-09 16:06:44 | 649ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-08 12:14:11 | 1019ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-06 07:40:51 | 1716ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-02 07:12:09 | 631ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 07:05:39 | 611ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-29 06:53:34 | 2176ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-28 06:13:05 | 964ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-27 15:06:09 | 1846ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-23 13:36:10 | 815ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 02:25:24 | 1872ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-13 00:29:55 | 825ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-05 13:04:22 | 2351ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-31 04:00:18 | 1710ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-26 17:54:36 | 415ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-24 03:25:54 | 2902ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-23 03:02:02 | 3934ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-17 20:18:25 | 2112ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-16 15:37:18 | 870ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-15 05:20:28 | 961ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-13 23:51:14 shown | 968ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-10 03:35:12 | 3936ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-07 23:30:40 | 2301ms | 2 NS 1 A 1 MX | 🔒 Secure |