buttner.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.111.240.137 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by mx1.pub.mailpod13-cph3.one.com, mx2.pub.mailpod13-cph3.one.com and 2 more. The zone is DNSSEC-signed and validates, has no DMARC policy and is reachable over IPv6. Below are all of its DNS records from this 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 |
|---|---|---|---|---|---|---|---|
| 77.111.240.137 | 3600s | — | AS51468 | One.com A/S | 77.111.240.0/22 | 🇩🇰 Denmark | Copenhagen |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod13-cph3.one.com | 185.10.9.42 | mx1.pub.mailpod13-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod13-cph3.one.com | 185.10.9.43 | mx2.pub.mailpod13-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod13-cph3.one.com | 185.10.9.44 | mx3.pub.mailpod13-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod13-cph3.one.com | 185.10.9.45 | mx4.pub.mailpod13-cph3.one.com | AS51468 One.com A/S |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a02:2350:5:102:49:c0b7:5518:c799 | 3600s | — | AS51468 | One.com A/S | 2a02:2350:0:0:0:0:0:0/32 | 🇩🇰 Denmark | Copenhagen |
| www | 93.191.156.125 (AS48854) (address records, no CNAME) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Denial of existence | NSEC zone can be walked (all names enumerable) |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod13-cph3.one.com | DANE-EE · SPKI · SHA-256 | BE8C554E6A2A9BFE9F87080F0AE71BAD… |
| SMTP _25._tcp.mx2.pub.mailpod13-cph3.one.com | DANE-EE · SPKI · SHA-256 | BE8C554E6A2A9BFE9F87080F0AE71BAD… |
| SMTP _25._tcp.mx3.pub.mailpod13-cph3.one.com | DANE-EE · SPKI · SHA-256 | BE8C554E6A2A9BFE9F87080F0AE71BAD… |
| SMTP _25._tcp.mx4.pub.mailpod13-cph3.one.com | DANE-EE · SPKI · SHA-256 | BE8C554E6A2A9BFE9F87080F0AE71BAD… |
| Check | Result |
|---|---|
| Validation Status | 🔒 Secure |
| AD Flag (resolver validates) | ✓ Set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | fully validated |
| Field | Value |
|---|---|
| Serial | 2026082705 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-01 17:51:59 | 664ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-22 14:13:21 | 951ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-20 17:47:23 | 633ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-08 21:44:10 | 739ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-01 19:58:10 shown | 8632ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-31 20:56:04 | 687ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-28 01:58:56 | 803ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 09:05:23 | 706ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-07-02 11:27:51 | 881ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-25 11:21:27 | 2759ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-23 23:22:46 | 908ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-22 18:26:26 | 3274ms | 4 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-20 15:07:39 | 891ms | 0 NS 0 A 0 MX | ❓ Unknown |
| 2026-06-16 17:55:09 | 577ms | 4 NS 1 A 1 MX | 🔒 Secure |