flasker.dk is a .dk domain served by 2 nameservers (primary.ns.hostup.se, secondary.ns.hostup.se). It was registered on 4 August 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.54.229 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.flasker.dk. The zone is of unknown DNSSEC status, publishes a 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 |
|---|---|---|---|---|---|---|---|
| 104.21.54.229 | 30s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.143.30 | 30s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 30s | mail.flasker.dk | 185.113.11.10 | lambda.hostup.se | AS214640 Hostup AB |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::6815:36e5 | 30s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::ac43:8f1e | 30s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.54.229,172.67.143.30 ech=AEX+DQBBUAAgACCp/3/EGAG9qXNHV51RKXanrenMlsge1uK0fIu7E6ZfHwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:36e5,2606:4700:3037::ac43:8f1e |
| TXT Record |
|---|
| v=spf1 mx include:spf.hostup.se ~all |
| Policy | Record (flasker.dk) |
|---|---|
| ~all (soft fail) | v=spf1 mx include:spf.hostup.se ~all |
| Policy | Record (_dmarc.flasker.dk) |
|---|---|
| p=none (monitor only) | v=DMARC1; p=none; |
| www | 104.21.54.229 172.67.143.30 2606:4700:3030::6815:36e5 2606:4700:3037::ac43:8f1e (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network |
| 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 |
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: 2/10 · policy: ~all
No problems found| Check | Result |
|---|---|
| Validation Status | ❓ Unknown |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✓ Found |
| Flags | broken trust chain resolving 'flasker.dk/DNSKEY/IN': 172.28.0.2#53 |
| Field | Value |
|---|---|
| Serial | 2417354673 |
| Primary NS (MNAME) | primary.ns.hostup.se |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | Simply.com A/S |
| Registered | 2026-08-04 |
| Expires | 2027-08-03 (285d) |
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 |
|---|---|---|---|
| 2026-10-21 06:27:04 shown | 1164ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-10-20 01:01:48 | 744ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-17 23:49:24 | 1127ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-15 20:49:17 | 1318ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-14 19:06:28 | 1720ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-13 17:06:45 | 692ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-11 11:48:17 | 805ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-10 09:44:19 | 694ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-10-05 23:34:43 | 2195ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 22:33:11 | 676ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-27 08:04:59 | 1540ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-24 16:27:17 | 939ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-20 13:38:31 | 680ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-18 04:00:23 | 1943ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-12 00:22:54 | 1224ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-08 06:24:41 | 1175ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-31 17:50:57 | 1604ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-30 14:28:16 | 2054ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-29 01:55:25 | 1648ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 23:40:56 | 541ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 23:18:26 | 1174ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 17:04:00 | 951ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-23 15:56:14 | 2174ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-22 14:24:38 | 8779ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-21 14:11:19 | 1341ms | 2 NS 2 A 1 MX | 🔓 Insecure |