tjaereby.dk is a .dk domain served by 2 nameservers (ns.brisson.dk, ns2.brisson.dk). It was registered on 16 April 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.brisson.dk. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|
| ns.brisson.dk | 80.209.68.5 | 80.209.68.5.static.fibianet.dk | AS44869 FIBIA P/S |
| ns2.brisson.dk | 80.209.68.3 | 80.209.68.3.static.fibianet.dk | AS44869 FIBIA P/S |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 86400s | mx.brisson.dk | 80.209.68.5 | 80.209.68.5.static.fibianet.dk | AS44869 FIBIA P/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 86.48.94.210 |
| 🔶 Autoconfig | 86.48.94.210 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _imaps._tcp | 0 | 0 | 993 | mail.tjaereby.dk |
| TXT Record |
|---|
| v=spf1 mx include:_spf.brisson.dk -all |
| Policy | Record (tjaereby.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:_spf.brisson.dk -all |
| Policy | Record (_dmarc.tjaereby.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@lists.e11.dk; ruf=mailto:dmarc-forensic@lists.e11.dk |
| Check | Result |
|---|---|
| Status | ⚠️ Invalid |
| TXT record (_mta-sts) | ✓ Found |
| HTTPS policy | ✗ Missing / invalid |
| Policy ID | 20260904144925Z |
| Policy MX | — |
| Status | Report address (rua) |
|---|---|
| ✓ Enabled | mailto:tlsrpt-reports@lists.e11.dk |
| www | 86.48.94.210 (AS47292) (address records, no CNAME) |
| www vs bare domain | Only www resolves (all like this) |
| Wildcard | Yes: any name under the zone resolves |
| 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: 2/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx.brisson.dk | DANE-EE · SPKI · SHA-256 | FA203DECA691B5F6574B2C65ED8634B1… |
| 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 | 2026100802 |
| Primary NS (MNAME) | ns.brisson.dk |
| Responsible (RNAME) | hostmaster@brisson.dk |
| Refresh | 86400s |
| Retry | 7200s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2003-04-16 |
| Expires | 2027-04-30 (194d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-08 23:20:45 shown | 1017ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-26 16:09:03 | 654ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-24 01:49:45 | 611ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-21 17:49:29 | 801ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-13 05:52:14 | 1003ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-10 18:56:13 | 1267ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-09-03 18:36:14 | 506ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-28 04:22:29 | 611ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-26 22:20:34 | 532ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-08-08 13:48:57 | 8505ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-26 21:29:21 | 2435ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-07-25 20:50:59 | 737ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-26 16:42:47 | 548ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-25 16:13:38 | 509ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-17 23:36:55 | 536ms | 2 NS 0 A 1 MX | 🔓 Insecure |