postklar.dk is a .dk domain served by 2 nameservers (arnold.ns.cloudflare.com, becky.ns.cloudflare.com). It was registered on 21 April 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.jobcatcher.dk, alt1.mymailcheap.com and 1 more. The zone is not DNSSEC-signed, 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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 1 | 3600s | mail.jobcatcher.dk | 51.210.190.35 | mail.jobcatcher.dk | AS16276 OVH SAS |
| 5 | 3600s | alt1.mymailcheap.com | 51.83.107.245 | alt1.mymailcheap.com | AS16276 OVH SAS |
| 10 | 3600s | alt2.mymailcheap.com | 158.69.83.225 | alt2.mymailcheap.com | AS16276 OVH SAS |
| TXT Record |
|---|
| mandrill_verify.Fdeap9ialCNIJx8iZcSKmA |
| nms-domain-verification=511968589357 |
| v=spf1 mx include:_spf.mymailcheap.com -all |
| Policy | Record (postklar.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx include:_spf.mymailcheap.com -all |
| Policy | Record (_dmarc.postklar.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; adkim=s; aspf=s; rua=mailto:info@postklar.dk |
| www | NXDOMAIN |
| www vs bare domain | Neither resolves postklar.dk: no address www.postklar.dk: no address |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| default | — | RSA · ~1024 bit below 2048 bit |
| dkim | — | RSA · ~1024 bit below 2048 bit |
| k1 | — | RSA · ~1024 bit below 2048 bit |
| — | RSA · ~1024 bit below 2048 bit | |
| s1 | — | RSA · ~1024 bit below 2048 bit |
| s2 | — | RSA · ~1024 bit below 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: 5/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.postklar.dk | FABM410s3-mIPxUm80YGRZHKkGnMV165Zq4b4o9jyYs |
| TXT | _acme-challenge.postklar.dk | u7rhkepR0rM_44atq3v1uN0eg236ELAgirtXytVQjCk |
| 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 | 2412452213 |
| Primary NS (MNAME) | arnold.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2026-04-21 |
| Expires | 2027-04-20 (184d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 09:07:19 | 1104ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-10-16 08:34:47 | 670ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-10-15 06:32:30 | 834ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-30 13:12:44 | 1211ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-08 06:31:59 | 9191ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-09-02 07:02:19 | 967ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-20 10:59:17 | 2434ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-18 08:34:27 shown | 4237ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-08-17 01:48:42 | 8864ms | 2 NS 0 A 3 MX | ❓ Unknown |
| 2026-08-14 10:37:01 | 1774ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-07-03 15:37:27 | 1171ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-27 14:17:57 | 827ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-23 10:07:58 | 1153ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-21 02:41:15 | 3173ms | 2 NS 0 A 3 MX | 🔓 Insecure |
| 2026-06-18 03:54:43 | 2822ms | 2 NS 0 A 3 MX | 🔓 Insecure |