plesner.dk is a .dk domain served by 2 nameservers (dns1.cscdns.net, dns2.cscdns.net). It was registered on 25 June 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 82.103.129.185 is hosted by Asergo Holding ApS (AS30736) in Denmark. Mail is handled by plesner-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 82.103.129.185 | 1800s | ddsks.dk | AS30736 | Asergo Holding ApS | 82.103.128.0/18 | 🇩🇰 Denmark | Copenhagen |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| 🔶 Autoconfig | plesner.com → 82.103.129.185 |
| TXT Record |
|---|
| MS=ms78807820 |
| v=spf1 ip4:194.182.6.185 include:spf.topdesk.net include:spf.mailanyone.net include:_spf.defgo.net include:servers.mcsv.net include:o._spf.hostedsepo.dk include:spf.protection.outlook.com -all |
| Policy | Record (plesner.dk) |
|---|---|
| -all (hard fail) | v=spf1 ip4:194.182.6.185 include:spf.topdesk.net include:spf.mailanyone.net include:_spf.defgo.net include:servers.mcsv.net include:o._spf.hostedsepo.dk include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.plesner.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; rua=mailto:qehcrx5k@ag.dmarcian-eu.com |
| www CNAME | plesner.com (all on plesner.com) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| selector1 | selector1-plesner-dk._domainkey.plesner.onmicrosoft.com | RSA · ~1024 bit below 2048 bit |
| selector2 | selector2-plesner-dk._domainkey.plesner.onmicrosoft.com | 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: 6/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.plesner.dk | plesner.com |
| TXT | plesner.com | anthropic-domain-verification-xym44v=oIdsasn8ZrUzMq8WtD7d56k4z |
| TXT | plesner.com | apple-domain-verification=GQM3hcl4aArib5Rb |
| TXT | plesner.com | docusign=06076190-7ad3-4a54-8b21-8a9a9c1af77e |
| TXT | plesner.com | j78wkxk91b1q2kybqy47yr51w1z3lf7m |
| TXT | plesner.com | openai-domain-verification=dv-B3zWDNTjYWCBBK5GPKJsPo8z |
| TXT | plesner.com | xl18s8wwlxz2qflsbr7f3pmybnlbfzny |
| 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 | 2013121142 |
| Primary NS (MNAME) | dns1.cscdns.net |
| Responsible (RNAME) | hostmaster@cscdns.net |
| Refresh | 21600s |
| Retry | 7200s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | CSC Digital Brand Service, Inc |
| Registered | 1997-06-25 |
| Expires | 2027-06-30 (253d) |
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 |
|---|---|---|---|
| 2026-09-30 12:18:00 shown | 1220ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-30 08:08:01 | 1300ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-09-01 16:36:21 | 10373ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-07-03 08:42:57 | 3017ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-28 08:42:53 | 839ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-25 05:03:51 | 1545ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-20 23:22:32 | 1162ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-20 21:14:04 | 975ms | 2 NS 1 A 1 MX | 🔓 Insecure |
| 2026-06-17 19:29:21 | 1370ms | 2 NS 1 A 1 MX | 🔓 Insecure |