aco.dk is a .dk domain served by 5 nameservers (ns1.lemarit.de, ns1.lemarit.net, ns2.lemarit.de and 2 more). It was registered on 29 November 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mxa-00895801.gslb.pphosted.com, mxb-00895801.gslb.pphosted.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.
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 3600s | mxa-00895801.gslb.pphosted.com | 143.55.150.221 | mx08-00895801.pphosted.com | AS52129 Proofpoint, Inc. |
| 20 | 3600s | mxb-00895801.gslb.pphosted.com | 66.159.235.91 | mx07-00895801.pphosted.com | AS52129 Proofpoint, Inc. |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.56 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 0 | 0 | 443 | autodiscover.outlook.com |
| TXT Record |
|---|
| docusign=937ce1f8-e7c7-47d8-ac78-043a42737281 |
| facebook-domain-verification=co1e08luug3psvk0j1ylt2kxqka01n |
| MS=ms28797950 |
| v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:spf-00895801.pphosted.com ip4:94.135.234.34 ip4:88.79.109.4 include:spf.vhost.aco -all |
| Policy | Record (aco.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:spf-00895801.pphosted.com ip4:94.135.234.34 ip4:88.79.109.4 include:spf.vhost.aco -all |
| Policy | Record (_dmarc.aco.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@aco.com; adkim=s; aspf=s; |
| www | 81.88.17.128 (AS8648) (address records, no CNAME) |
| www vs bare domain | Different networks (all like this) |
| Wildcard | No |
DNS lookups: 5/10 · policy: -all
No problems found| 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 | 1754044963 |
| Primary NS (MNAME) | ns1.lemarit.de |
| Responsible (RNAME) | hostmaster@lemarit.com |
| Refresh | 43200s |
| Retry | 10800s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 3600s |
| Field | Value |
|---|---|
| Registrar | LEMARIT GmbH |
| Registered | 1996-11-29 |
| Expires | 2026-12-31 (74d) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-07-22 23:29:05 shown | 15795ms | 5 NS 0 A 2 MX | 🔓 Insecure |
| 2026-06-22 16:21:54 | 1756ms | 5 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-16 12:56:36 | 1922ms | 5 NS 1 A 2 MX | 🔓 Insecure |