semdns.dk is a .dk domain served by 2 nameservers (josh.ns.cloudflare.com, ruth.ns.cloudflare.com). It was registered on 5 September 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 83.151.155.18 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by mail.semark.dk, mail.backup.semark.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 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 |
|---|---|---|---|---|---|---|---|
| 83.151.155.18 | 300s | — | AS31027 | GlobalConnect A/S | 83.151.128.0/18 | 🇩🇰 Denmark | Humlebæk |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mail.semark.dk | 83.151.155.21 | mail.semark.dk | AS31027 GlobalConnect A/S |
| 20 | 300s | mail.backup.semark.dk | 83.151.155.18 | — | AS31027 GlobalConnect A/S |
| TXT Record |
|---|
| v=spf1 -all |
| Policy | Record (semdns.dk) |
|---|---|
| -all (hard fail) | v=spf1 -all |
| Policy | Record (_dmarc.semdns.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; aspf=r; adkim=r; fo=1; pct=100; rua=mailto:semark-d@dmarc.report-uri.com; ruf=mailto:semark-d@dmarc.report-uri.com; |
| Flags | Tag | Value |
|---|---|---|
| 0 | iodef | mailto:info@semarkit.net |
| 0 | issue | comodoca.com |
| 0 | issue | digicert.com; cansignhttpexchanges=yes |
| 0 | issue | letsencrypt.org |
| 0 | issue | pki.goog; cansignhttpexchanges=yes |
| 0 | issue | ssl.com |
| 0 | issuewild | ; |
| 0 | issuewild | comodoca.com |
| 0 | issuewild | digicert.com; cansignhttpexchanges=yes |
| 0 | issuewild | letsencrypt.org |
| 0 | issuewild | pki.goog; cansignhttpexchanges=yes |
| 0 | issuewild | ssl.com |
| www CNAME | semdns.dk (all on semdns.dk) → 83.151.155.18 (AS31027) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| default | — | Revoked (empty key) |
| dkim | — | Revoked (empty key) |
| k1 | — | Revoked (empty key) |
| — | Revoked (empty key) | |
| s1 | — | Revoked (empty key) |
| s2 | — | Revoked (empty key) |
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: 0/10 · policy: -all
No problems found| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2417374157 |
| Primary NS (MNAME) | josh.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | WEBHOSTING A/S |
| Registered | 2022-09-05 |
| Expires | 2027-09-04 (322d) |
Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-14 03:28:06 shown | 5860ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-13 02:27:21 | 3264ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-11 23:48:32 | 613ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-10-02 10:15:06 | 1190ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-26 08:51:04 | 870ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-21 20:18:53 | 2218ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-09-12 21:14:44 | 1366ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-26 19:33:51 | 953ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-16 18:06:12 | 1517ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-14 20:10:44 | 3799ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-08-07 09:26:51 | 2096ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-25 04:33:40 | 2030ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-07-22 19:24:19 | 1427ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-30 20:26:23 | 2551ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-24 23:04:20 | 1214ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-19 21:54:12 | 3513ms | 2 NS 1 A 2 MX | 🔒 Secure |
| 2026-06-17 12:56:27 | 5755ms | 2 NS 1 A 2 MX | 🔒 Secure |