buchcopenhagen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 November 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.48.72.41 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by mx1.pub.mailpod12-cph3.one.com, mx2.pub.mailpod12-cph3.one.com and 2 more. The zone is of unknown DNSSEC status, publishes a DMARC policy and has no IPv6 address. 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 |
|---|---|---|---|---|---|---|---|
| 86.48.72.41 | 3600s | sumo04.solido.net | AS47292 | Sentia Denmark A/S | 86.48.72.0/21 | 🇩🇰 Denmark | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 10800s | mx1.pub.mailpod12-cph3.one.com | 104.37.34.246 | mx1.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx2.pub.mailpod12-cph3.one.com | 104.37.34.247 | mx2.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx3.pub.mailpod12-cph3.one.com | 104.37.34.248 | mx3.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| 10 | 10800s | mx4.pub.mailpod12-cph3.one.com | 104.37.34.249 | mx4.pub.mailpod12-cph3.one.com | AS51468 One.com A/S |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 46.30.213.143 |
| 🔶 Autoconfig | 46.30.213.143 |
| TXT Record |
|---|
| google-site-verification=dNPkEZeVy_p7pXYKNzQvUivF9HwIyeqiotakT__4_-4 |
| klaviyo-site-verification=UJGdxB |
| v=spf1 include:_custspf.one.com include:sendgrid.net -all |
| Policy | Record (buchcopenhagen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_custspf.one.com include:sendgrid.net -all |
| Policy | Record (_dmarc.buchcopenhagen.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 86.48.72.45 (AS47292) (address records, no CNAME) |
| 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 |
|---|---|---|
| s1 | s1.domainkey.u16150706.wl207.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u16150706.wl207.sendgrid.net | 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: 3/10 · policy: -all
No problems found| Service / Owner | Type | Cert association |
|---|---|---|
| SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | D91CB8AC124CB360F986182813BDF3FD… |
| SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | D91CB8AC124CB360F986182813BDF3FD… |
| SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | D91CB8AC124CB360F986182813BDF3FD… |
| SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com | DANE-EE · SPKI · SHA-256 | D91CB8AC124CB360F986182813BDF3FD… |
| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✓ Found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'buchcopenhagen.dk/A/IN': 127.0.0.1#53 |
| Field | Value |
|---|---|
| Serial | 2026062001 |
| Primary NS (MNAME) | ns01.one.com |
| Responsible (RNAME) | hostmaster@one.com |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 1209600s |
| Minimum (neg-cache TTL) | 600s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2010-11-13 |
| Expires | 2027-11-30 (400d) |
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 |
|---|---|---|---|
| 2026-10-23 16:53:56 | 1755ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-10-05 04:03:11 | 1483ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-18 17:01:32 | 838ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-09-06 13:23:38 | 1545ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-08-08 15:47:05 | 4923ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-19 17:39:15 | 1202ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-07 04:32:52 | 9358ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-04 19:35:18 | 1078ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-07-03 14:52:03 | 856ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-26 00:17:28 shown | 693ms | 2 NS 1 A 4 MX | ❓ Unknown |
| 2026-06-16 17:39:57 | 2383ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 17:30:57 | 715ms | 2 NS 1 A 4 MX | 🔒 Secure |
| 2026-06-16 17:30:20 | 4411ms | 2 NS 1 A 4 MX | 🔒 Secure |