buch-jepsen.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, miles.ns.cloudflare.com). It was registered on 26 April 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.37.28 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 5 more. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.37.28 | 600s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.203.106 | 600s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | 104.21.37.28 |
| 🔶 Autoconfig | 188.114.96.1 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2a06:98c1:3120::1 | 600s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3120:0:0:0:0:0/46 | — | — |
| 2a06:98c1:3121::1 | 600s | — | AS13335 | Cloudflare, Inc. | 2a06:98c1:3120:0:0:0:0:0/46 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.37.28,172.67.203.106 ech=AEX+DQBB+AAgACAZDRgWmZnfMEyg/ylLGp2E9y01joSBu+Rks3kxiynuDwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:cb6a,2606:4700:3036::6815:251c |
| TXT Record |
|---|
| v=spf1 include:_spf.google.com -all |
| Policy | Record (buch-jepsen.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.google.com -all |
| www | 104.21.37.28 172.67.203.106 2606:4700:3032::6815:251c 2606:4700:3036::ac43:cb6a (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network buch-jepsen.dk: 104.21.37.28 172.67.203.106 2606:4700:3032::6815:251c 2606:4700:3036::ac43:cb6a (AS13335) www.buch-jepsen.dk: 104.21.37.28 172.67.203.106 2606:4700:3032::6815:251c 2606:4700:3036::ac43:cb6a (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 1/10 · 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 | 2405620849 |
| Primary NS (MNAME) | barbara.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | nordicway ApS |
| Registered | 2001-04-26 |
| Expires | 2027-06-30 (249d) |
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).
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-09-30 21:08:38 | 907ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-09-17 21:53:45 | 1507ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-09-10 13:37:36 | 1761ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-09-03 13:09:40 | 2943ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-07-07 04:59:09 | 17374ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-26 02:32:34 | 2518ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-22 06:33:43 shown | 768ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-20 18:27:04 | 930ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-16 17:38:24 | 2821ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-16 17:33:21 | 4940ms | 2 NS 2 A 7 MX | 🔓 Insecure |
| 2026-06-16 17:30:30 | 682ms | 2 NS 2 A 7 MX | 🔓 Insecure |