keldmann.dk is a .dk domain served by 2 nameservers (celeste.ns.cloudflare.com, chuck.ns.cloudflare.com). It was registered on 21 May 2001 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.67.182 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by keldmann-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.67.182 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.179.83 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 52.98.149.136 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3031::ac43:b353 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:43b6 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.67.182,172.67.179.83 ech=AEX+DQBB3gAgACBZgVkdAkyxpJW0Q7Rc6HexutWj75lgdzvSD0dUmBpEPQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:b353,2606:4700:3034::6815:43b6 |
| Service | Priority | Weight | Port | Target |
|---|---|---|---|---|
| _sipfederationtls._tcp | 100 | 1 | 5061 | sipfed.online.lync.com |
| TXT Record |
|---|
| MS=ms47078851 |
| v=spf1 include:spf.protection.outlook.com -all |
| Policy | Record (keldmann.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com -all |
| www | 104.21.67.182 172.67.179.83 2606:4700:3031::ac43:b353 2606:4700:3034::6815:43b6 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network keldmann.dk: 104.21.67.182 172.67.179.83 2606:4700:3031::ac43:b353 2606:4700:3034::6815:43b6 (AS13335) www.keldmann.dk: 104.21.67.182 172.67.179.83 2606:4700:3031::ac43:b353 2606:4700:3034::6815:43b6 (AS13335) |
| Wildcard | No |
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 | 2417646379 |
| Primary NS (MNAME) | celeste.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 | 2001-05-21 |
| Expires | 2027-06-30 (254d) |
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 |
|---|---|
| fornyelsestræet.dk | Punktum dk A/S (direct) |
| innovationtree.dk | Punktum dk A/S (direct) |
| keldmannhealthcare.dk | Punktum dk A/S (direct) |
| keldmanninnovation.dk | Punktum dk A/S (direct) |
| Scanned At | Duration | Records | DNSSEC |
|---|---|---|---|
| 2026-10-17 01:57:26 shown | 3324ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-07 15:08:08 | 892ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-01 05:40:55 | 927ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-14 09:20:41 | 2489ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 21:24:45 | 2057ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-18 20:32:06 | 7107ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-14 23:13:47 | 9167ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 21:56:26 | 877ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-20 17:32:00 | 888ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 21:01:02 | 1270ms | 2 NS 2 A 1 MX | 🔓 Insecure |