esper.dk is a .dk domain served by 4 nameservers (ns1.nordicway.dk, ns2.nordicway.dk, ns3.nordicway.dk and 1 more). It was registered on 13 April 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.40.215.228 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.esper.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 |
|---|---|---|---|---|---|---|---|
| 188.40.215.228 | 3600s | cp17.nordicway.dk | AS24940 | Hetzner Online GmbH | 188.40.0.0/16 | 🇩🇪 Germany | Falkenstein |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 3600s | mail.esper.dk | 188.40.215.228 | cp17.nordicway.dk | AS24940 Hetzner Online GmbH |
| TXT Record |
|---|
| v=spf1 +a +mx +ip4:188.40.215.228 include:relay.mailchannels.net ~all |
| Policy | Record (esper.dk) |
|---|---|
| ~all (soft fail) | v=spf1 +a +mx +ip4:188.40.215.228 include:relay.mailchannels.net ~all |
| Policy | Record (_dmarc.esper.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1;p=none;sp=none;adkim=r;aspf=r;pct=100;fo=0;rf=afrf;ri=86400 |
| www CNAME | esper.dk (all on esper.dk) |
| www vs bare domain | Same network |
| Wildcard | No |
| Denial of existence | NSEC3 · 0 iterations · no salt RFC 9276 ✓ |
| CDS / CDNSKEY | None 0 CDS, 0 CDNSKEY |
| 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: 3/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.esper.dk | l2R4SEL20W3k-8woWHkjOjFL5oCxOK0WHaCyaHX-_vQ |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026101005 |
| Primary NS (MNAME) | ns1.nordicway.dk |
| Responsible (RNAME) | server@nordicway.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2007-04-13 |
| Expires | 2030-04-30 (1290d) |
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).
No other domain with this registrant in our WHOIS data yet| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-10 16:33:48 shown | 683ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-10-01 05:10:44 | 462ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 04:50:11 | 465ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 13:49:47 | 637ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-26 18:47:30 | 575ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 07:30:18 | 642ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 08:24:56 | 399ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 08:24:54 | 401ms | 2 NS 1 A 1 MX | 🔒 Secure |