jsa-tag.dk is a .dk domain served by 2 nameservers (serena.ns.cloudflare.com, woz.ns.cloudflare.com). It was registered on 11 November 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.21.137 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.ishost.dk. 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 |
|---|---|---|---|---|---|---|---|
| 104.21.21.137 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.199.23 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Priority | TTL | Mail Server | IP addresses | PTR | ASN |
|---|---|---|---|---|---|
| 0 | 300s | mail.ishost.dk | 139.162.148.133 | mail.ishost.dk | AS63949 Akamai Connected Cloud |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3030::ac43:c717 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3034::6815:1589 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.21.137,172.67.199.23 ech=AEX+DQBBggAgACDFx+1Fj4/4IIl1FBQvYf4wnyCrdT6XJ/OTUMpbsfavLwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:c717,2606:4700:3034::6815:1589 |
| TXT Record |
|---|
| google-site-verification=e-esP-C2LnI3XaQMTM7K4_aYQfnUtqAwnmDGsQlIk_U |
| v=spf1 mx a:mail.ishost.dk a:mail3.ishost.dk -all |
| Policy | Record (jsa-tag.dk) |
|---|---|
| -all (hard fail) | v=spf1 mx a:mail.ishost.dk a:mail3.ishost.dk -all |
| Policy | Record (_dmarc.jsa-tag.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject |
| www | NXDOMAIN |
| www vs bare domain | www does not resolve jsa-tag.dk: 104.21.21.137 172.67.199.23 2606:4700:3030::ac43:c717 2606:4700:3034::6815:1589 (AS13335) (all like this)www.jsa-tag.dk: no address |
| Wildcard | No |
DNS lookups: 3/10 · 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 | 2412936309 |
| Primary NS (MNAME) | serena.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 | 2025-11-11 |
| Expires | 2026-11-10 (20d) |
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 |
|---|---|---|---|
| 2026-10-20 20:13:47 | 591ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-29 15:45:30 | 914ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-06 17:21:18 | 1877ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-27 07:11:39 shown | 2656ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-24 06:41:17 | 3076ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-22 02:36:51 | 7093ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-10 18:52:43 | 985ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-25 10:27:13 | 1322ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-20 07:44:35 | 5277ms | 2 NS 0 A 1 MX | 🔓 Insecure |
| 2026-06-18 02:02:34 | 3220ms | 2 NS 0 A 1 MX | 🔓 Insecure |