marquart.dk is a .dk domain served by 3 nameservers (ns1.e-studio.dk, ns2.e-studio.dk, ns3.e-studio.dk). It was registered on 29 September 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 18.133.72.105 is hosted by Amazon.com, Inc. (AS16509) in United Kingdom. Mail is handled by mx4.spamfri.dk, mx2.spamfri.dk and 2 more. 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 |
|---|---|---|---|---|---|---|---|
| 18.133.72.105 | 3600s | ec2-18-133-72-105.eu-west-2.compute.amazonaws.com | AS16509 | Amazon.com, Inc. | 18.128.0.0/12 | 🇬🇧 United Kingdom | City of London |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 193.200.90.102 |
| 🔶 Autoconfig | 193.200.90.102 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | cpanelemaildiscovery.cpanel.net |
| TXT Record |
|---|
| v=spf1 +ip4:193.200.90.102 include:_spf.e-studio.dk -all |
| Policy | Record (marquart.dk) |
|---|---|
| -all (hard fail) | v=spf1 +ip4:193.200.90.102 include:_spf.e-studio.dk -all |
| Policy | Record (_dmarc.marquart.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; pct=100; ruf=mailto:postmaster@marquart.dk |
| www CNAME | marquart.dk (all on marquart.dk) → 18.133.72.105 (AS16509) |
| 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: 1/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.spamfri.dk | DANE-EE · SPKI · SHA-256 | 884451547A03D0AC2F628D943839BAA6… |
| SMTP _25._tcp.mx2.spamfri.dk | DANE-EE · SPKI · SHA-256 | 6598C93F79B95376BB8099E9AC862167… |
| SMTP _25._tcp.mx3.spamfri.dk | DANE-EE · SPKI · SHA-256 | BBFB0694919290E5BC9D6E2C6F47D846… |
| SMTP _25._tcp.mx4.spamfri.dk | DANE-EE · SPKI · SHA-256 | 4EE743A99328AEF5142706CA5FD3AD61… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026092212 |
| Primary NS (MNAME) | ns1.e-studio.dk |
| Responsible (RNAME) | hostmaster@mailrelay.e-studio.dk |
| Refresh | 3600s |
| Retry | 1800s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 86400s |
| Field | Value |
|---|---|
| Registrar | dns.services ApS |
| Registered | 1999-09-29 |
| Expires | 2027-09-30 (344d) |
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 |
|---|---|---|---|
| 2026-10-20 22:43:56 shown | 1865ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-08 04:33:12 | 605ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 08:59:57 | 680ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-24 00:50:46 | 805ms | 3 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-06 23:44:53 | 584ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-28 14:41:44 | 6817ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-30 02:00:59 | 719ms | 3 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 19:46:34 | 6811ms | 3 NS 1 A 1 MX | 🔒 Secure |