dotbooking.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 February 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 144.91.97.254 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by mx1.justworks.dk, mx2.justworks.dk. 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.
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 144.91.97.254 | 360s | mail.justworks.dk | AS51167 | Contabo GmbH | 144.91.64.0/18 | 🇫🇷 France | Lauterbourg |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 10 | 300s | mx1.justworks.dk | 144.91.97.254 | mail.justworks.dk | AS51167 Contabo GmbH |
| 10 | 300s | mx2.justworks.dk | 144.91.97.254 | mail.justworks.dk | AS51167 Contabo GmbH |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | dotbooking.dk → 144.91.97.254 |
| 🔶 Autoconfig | dotbooking.dk → 144.91.97.254 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _autodiscover._tcp | 10 | 10 | 443 | justworks.dk |
| TXT Record |
|---|
| v=spf1 ip4:144.91.97.254 include:_spf.mlsend.com ~all |
| Policy | Record (dotbooking.dk) |
|---|---|
| ~all (soft fail) | v=spf1 ip4:144.91.97.254 include:_spf.mlsend.com ~all |
| Policy | Record (_dmarc.dotbooking.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; rua=mailto:postmaster@dotbooking.dk |
| www CNAME | dotbooking.dk (all on dotbooking.dk) → 144.91.97.254 (AS51167) |
| www vs bare domain | Same network |
| Wildcard | Yes: any name under the zone resolves |
| Selector | CNAME | Key |
|---|---|---|
| dkim | — | 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: 1/10 · policy: ~all
No problems found| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.dotbooking.dk | dotbooking.dk |
| 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 | 2022021703 |
| Primary NS (MNAME) | ns1.gratisdns.dk |
| Responsible (RNAME) | support@justworks.dk |
| Refresh | 14400s |
| Retry | 3600s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 300s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 2005-02-16 |
| Expires | 2027-02-28 (134d) |
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).
| Domain | Registrar |
|---|---|
| digitalblanket.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-02 02:10:19 shown | 2271ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-09-30 01:32:57 | 638ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-08-25 22:09:18 | 794ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-20 00:13:54 | 518ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 04:24:13 | 525ms | 2 NS 1 A 2 MX | 🔓 Insecure |
| 2026-06-17 04:20:10 | 610ms | 2 NS 1 A 2 MX | 🔓 Insecure |