nkcs.dk is a .dk domain served by 2 nameservers (clint.ns.cloudflare.com, lorna.ns.cloudflare.com). It was registered on 26 January 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.22.231 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.nkcs.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.22.231 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.207.145 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.nkcs.dk | — | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::6815:16e7 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3032::ac43:cf91 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.22.231,172.67.207.145 ech=AEX+DQBBgQAgACCRKpEw7Dan0Hdrwr7Y6aWdIRl8VviRfpMXwj+ia1lpJwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:16e7,2606:4700:3032::ac43:cf91 |
| TXT Record |
|---|
| v=spf1 a mx ptr ip4:94.237.98.155 -all |
| Policy | Record (nkcs.dk) |
|---|---|
| -all (hard fail) | v=spf1 a mx ptr ip4:94.237.98.155 -all |
| Policy | Record (_dmarc.nkcs.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| www | 104.21.22.231 172.67.207.145 2606:4700:3032::6815:16e7 2606:4700:3032::ac43:cf91 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | No |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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: 3/10 · policy: -all
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.nkcs.dk | LcGntOeonLExU8n5pg3wY0L8DOrhIg6PP_TLTBnlG0A |
| TXT | _acme-challenge.nkcs.dk | s-QBtGXl12qKiKtWUZ_3N1ZjMxPEwPlZFQCfjYXT8f8 |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2416215569 |
| Primary NS (MNAME) | clint.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 | 2021-01-26 |
| Expires | 2027-01-31 (101d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-07 14:50:55 | 2801ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 12:10:25 | 783ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 12:09:02 | 905ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 12:07:15 shown | 685ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-19 19:10:11 | 1078ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 22:51:50 | 859ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-09 12:27:34 | 926ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-06 19:30:17 | 1393ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 20:15:01 | 1502ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 08:27:02 | 5634ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 07:17:38 | 1175ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-18 05:08:21 | 793ms | 2 NS 2 A 1 MX | ⚠️ Bogus |