swerts.dk is a .dk domain served by 2 nameservers (kyree.ns.cloudflare.com, lady.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.41.19 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by pmg.swerts-knudsen.dk, mailgw.sbshosting.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 104.21.41.19 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.189.9 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 5 | 300s | pmg.swerts-knudsen.dk | 185.181.223.122 | pmg.swerts-knudsen.dk | AS203953 Hiper A/S |
| 10 | 300s | mailgw.sbshosting.dk | 5.57.55.126 | mailgw.sbshosting.dk | AS198608 Symbion A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.41.19 |
| 🔶 Autoconfig | 172.67.189.9 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::6815:2913 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::ac43:bd09 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.41.19,172.67.189.9 ech=AEX+DQBBigAgACClcPRSYIi9pRSXEYI2Mp1rDDKFgCgesWfIc4Sj2ogUFwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2913,2606:4700:3034::ac43:bd09 |
| TXT Record |
|---|
| v=spf1 include:spf.sbshosting.dk ip4:185.181.223.122 -all |
| Policy | Record (swerts.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.sbshosting.dk ip4:185.181.223.122 -all |
| Policy | Record (_dmarc.swerts.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none |
| www | 104.21.41.19 172.67.189.9 2606:4700:3031::6815:2913 2606:4700:3034::ac43:bd09 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · policy: -all
No problems found| 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 | 2415945446 |
| Primary NS (MNAME) | kyree.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 15:54:16 shown | 1028ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-27 02:33:48 | 1829ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-26 02:15:45 | 995ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-25 02:09:34 | 9669ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-22 23:06:51 | 882ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-18 15:29:36 | 3865ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-28 04:41:25 | 814ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 22:11:57 | 817ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-22 08:47:58 | 7310ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-12 16:28:01 | 1066ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-18 19:42:13 | 8950ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-13 18:50:42 | 1040ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-26 13:21:41 | 1932ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 01:10:13 | 2668ms | 2 NS 1 A 2 MX | 🔒 Secure |