jacobbuchhave.dk is a .dk domain served by 2 nameservers (osmar.ns.cloudflare.com, rayne.ns.cloudflare.com). It was registered on 2 June 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.170 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by smtp.google.com. The zone is not DNSSEC-signed, 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 |
|---|---|---|---|---|---|---|---|
| 104.21.13.170 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.200.219 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:c8db | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3033::6815:daa | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.13.170,172.67.200.219 ech=AEX+DQBB6gAgACAnIb9xukKvwV/tbsrQemTqab0tSs+E4bywaQTjCsNCCQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:c8db,2606:4700:3033::6815:daa |
| TXT Record |
|---|
| google-site-verification=D3cgk4oJ9nKiCFimtjyPHBrWYIgZbfrySy8MXyvVpv8 |
| www | 104.21.13.170 172.67.200.219 2606:4700:3032::ac43:c8db 2606:4700:3033::6815:daa (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network jacobbuchhave.dk: 104.21.13.170 172.67.200.219 2606:4700:3032::ac43:c8db 2606:4700:3033::6815:daa (AS13335) www.jacobbuchhave.dk: 104.21.13.170 172.67.200.219 2606:4700:3032::ac43:c8db 2606:4700:3033::6815:daa (AS13335) |
| Wildcard | No |
| Denial of existence | Compact NSEC (RFC 9824, "black lies") not walkable |
| CDS / CDNSKEY | Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY |
| Selector | CNAME | Key |
|---|---|---|
| — | 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.
| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.jacobbuchhave.dk | AUb2Dxq0D--lTa7SRTEkXRnfwsM-cJ6d6E9qBhJ6WZU |
| TXT | _acme-challenge.jacobbuchhave.dk | _lIv3gfsINaRCDjRhLLAsdOr2QQQh2tWbkAEMPlKXDI |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417223753 |
| Primary NS (MNAME) | osmar.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | DANDOMAIN A/S |
| Registered | 2026-06-02 |
| Expires | 2027-06-01 (221d) |
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 |
|---|---|---|---|
| 2026-10-13 10:56:48 | 3293ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-13 10:44:00 | 478ms | 2 NS 2 A 1 MX | 🔒 Secure |
| 2026-10-11 23:58:40 shown | 1909ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 19:59:48 | 454ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-09-09 03:46:46 | 559ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-08-27 03:24:09 | 832ms | 2 NS 1 A 1 MX | 🔒 Secure |
| 2026-06-17 14:39:37 | 1238ms | 2 NS 1 A 1 MX | 🔒 Secure |