hindholm.dk is a .dk domain served by 2 nameservers (bella.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 21 September 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.76.81 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by hindholm-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.76.81 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.191.107 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.99.149.216 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:bf6b | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3035::6815:4c51 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.76.81,172.67.191.107 ech=AEX+DQBBoQAgACDnocAmMJrNbx2g+6T1UqeIJvWl/Zi2sNZ6SqX7p2HyWgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:bf6b,2606:4700:3035::6815:4c51 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| google-site-verification=bCjBea6obT3WppLy5ogOUUfGg6UZCo4AXbVujAS7cAY |
| v=spf1 +ip4:141.95.126.89 +include:spf.mysecurecloudhost.com +include:spf.protection.outlook.com -all |
| Policy | Record (hindholm.dk) |
|---|---|
| -all (hard fail) | v=spf1 +ip4:141.95.126.89 +include:spf.mysecurecloudhost.com +include:spf.protection.outlook.com -all |
| Policy | Record (_dmarc.hindholm.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine; rua=mailto:853db7b12f89453ab10719cbfab40708@dmarc-reports.cloudflare.net |
| www | 185.232.148.95 (AS48854) (address records, no CNAME) |
| www vs bare domain | Different networks hindholm.dk: 104.21.76.81 172.67.191.107 2606:4700:3030::ac43:bf6b 2606:4700:3035::6815:4c51 (AS13335) (all like this)www.hindholm.dk: 185.232.148.95 (AS48854) |
| 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 |
|---|---|---|
| default | — | RSA · ~2048 bit |
| s1 | s1.domainkey.u2142267.wl018.sendgrid.net | RSA · ~2048 bit |
| s2 | s2.domainkey.u2142267.wl018.sendgrid.net | RSA · ~1024 bit below 2048 bit |
| selector1 | selector1-hindholm-dk._domainkey.hindholm.onmicrosoft.com | 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: 4/10 · policy: -all
No problems found| Type | Name | Value |
|---|---|---|
| TXT | _acme-challenge.hindholm.dk | A0T569WvUFSHHCwZTwAgfY0HLGC6r9iD1ZG4t2hU3GM |
| TXT | _acme-challenge.hindholm.dk | CUlE4JuVZ30W9kcZDRdU4vwAIhvetVybFjSK3wFIh_A |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2417495435 |
| Primary NS (MNAME) | bella.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Punktum dk A/S (direct) |
| Registered | 1999-09-21 |
| Expires | 2027-09-30 (338d) |
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 |
|---|---|---|---|
| 2026-10-21 09:20:42 | 3456ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-15 22:54:52 shown | 1336ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-13 18:58:59 | 5927ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-10 14:07:18 | 2470ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 03:48:57 | 742ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-30 06:58:29 | 761ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-23 18:31:21 | 2961ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 04:12:23 | 2113ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-23 13:01:34 | 4245ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-17 23:22:20 | 2496ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-16 21:05:04 | 18241ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-31 14:37:16 | 1848ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-06 05:04:03 | 3793ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-24 23:36:26 | 3735ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 13:02:47 | 13829ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 11:51:12 | 5172ms | 2 NS 2 A 1 MX | 🔓 Insecure |