swerts-knudsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 July 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.181.223.122 is hosted by Hiper A/S (AS203953) in Denmark. Mail is handled by pmg.swerts-knudsen.dk, mailgw.sbshosting.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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 185.181.223.122 | 600s | pmg.swerts-knudsen.dk | AS203953 | Hiper A/S | 185.181.220.0/22 | 🇩🇰 Denmark | Vanløse |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 600s | pmg.swerts-knudsen.dk | 185.181.223.122 | pmg.swerts-knudsen.dk | AS203953 Hiper A/S |
| 15 | 600s | mailgw.sbshosting.dk | 5.57.55.126 | mailgw.sbshosting.dk | AS198608 Symbion A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | swerts-knudsen.dk → 185.181.223.122 |
| 🔶 Autoconfig | swerts-knudsen.dk → 185.181.223.122 |
| TXT Record |
|---|
| v=spf1 include:spf.sbshosting.dk ip4:185.181.223.122 -all |
| Policy | Record (swerts-knudsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.sbshosting.dk ip4:185.181.223.122 -all |
| Policy | Record (_dmarc.swerts-knudsen.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| Flags | Tag | Value |
|---|---|---|
| 0 | issue | letsencrypt.org |
| www | 104.21.86.95 172.67.217.106 2606:4700:3033::ac43:d96a 2606:4700:3034::6815:565f (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network swerts-knudsen.dk: 104.21.86.95 172.67.217.106 2606:4700:3033::ac43:d96a 2606:4700:3034::6815:565f (AS13335) www.swerts-knudsen.dk: 104.21.86.95 172.67.217.106 2606:4700:3033::ac43:d96a 2606:4700:3034::6815:565f (AS13335) |
| 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: 1/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.swerts-knudsen.dk | swerts-knudsen.dk |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026071801 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2002-07-22 |
| Expires | 2027-09-30 (339d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-03 13:55:39 | 705ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-02 13:54:32 | 648ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-10-01 13:52:58 | 1058ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-30 13:50:44 | 1427ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-29 13:48:19 | 1013ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-26 13:24:23 | 1246ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-26 02:26:27 | 686ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-24 01:46:45 | 762ms | 2 NS 2 A 2 MX | 🔓 Insecure |
| 2026-09-11 19:04:57 | 877ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-03 20:45:02 | 709ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-13 04:38:12 | 1298ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-19 04:23:53 shown | 1256ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-16 19:17:05 | 2814ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-22 16:10:18 | 817ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-21 16:19:06 | 1320ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-18 01:03:35 | 1121ms | 2 NS 1 A 2 MX | 🔒 Secure |