jsuengineering.dk is a .dk domain served by 2 nameservers (dimitris.ns.cloudflare.com, ursula.ns.cloudflare.com). It was registered on 20 August 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.65.128 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by jsuengineering-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 |
|---|---|---|---|---|---|---|---|
| 104.21.65.128 | 300s | — | AS13335 | Cloudflare, Inc. | 104.21.0.0/17 | — | — |
| 172.67.145.109 | 300s | — | AS13335 | Cloudflare, Inc. | 172.67.128.0/17 | — | — |
| Service | CNAME / IP |
|---|---|
| 🔷 Autodiscover | autodiscover.outlook.com → 40.104.116.24 |
| 🔶 Autoconfig | 104.21.65.128 |
| IPv6 Address | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 2606:4700:3032::ac43:916d | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| 2606:4700:3037::6815:4180 | 300s | — | AS13335 | Cloudflare, Inc. | 2606:4700:3000:0:0:0:0:0/42 | — | — |
| Priority | Target | SvcParams |
|---|---|---|
| 1 service | . | alpn="h3,h2" ipv4hint=104.21.65.128,172.67.145.109 ech=AEX+DQBBXQAgACCSQqlHYhZ2WX6zp65WU99pGcHm/q60IcBe4u6pFoSPMAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:916d,2606:4700:3037::6815:4180 |
| TXT Record |
|---|
| MS=ms17632145 |
| MS=ms95495152 |
| v=spf1 include:spf.protection.outlook.com include:dedicated.mysmtp.com -all |
| Policy | Record (jsuengineering.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:spf.protection.outlook.com include:dedicated.mysmtp.com -all |
| Policy | Record (_dmarc.jsuengineering.dk) |
|---|---|
| p=reject | v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r; rua=mailto:abuse@jsuengineering.dk; ruf=mailto:abuse@jsuengineering.dk; fo=0; pct=100; ri=86400 |
| www | 104.21.65.128 172.67.145.109 2606:4700:3032::ac43:916d 2606:4700:3037::6815:4180 (AS13335) (address records, no CNAME) |
| www vs bare domain | Same network jsuengineering.dk: 188.114.96.1 188.114.97.1 2606:4700:3032::ac43:916d 2606:4700:3037::6815:4180 (AS13335) www.jsuengineering.dk: 104.21.65.128 172.67.145.109 2606:4700:3032::ac43:916d 2606:4700:3037::6815:4180 (AS13335) |
| Wildcard | Yes: any name under the zone resolves |
DNS lookups: 5/10 · 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 | 2415493276 |
| Primary NS (MNAME) | dimitris.ns.cloudflare.com |
| Responsible (RNAME) | dns@cloudflare.com |
| Refresh | 10000s |
| Retry | 2400s |
| Expire | 604800s |
| Minimum (neg-cache TTL) | 1800s |
| Field | Value |
|---|---|
| Registrar | WorkDigital ApS |
| Registered | 2020-08-20 |
| Expires | 2027-08-31 (315d) |
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 |
|---|---|---|---|
| 2026-09-30 18:09:21 | 1291ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-21 23:09:49 shown | 7190ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-03 19:55:57 | 751ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-09-02 04:09:13 | 799ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-26 02:15:27 | 1051ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-08-25 10:57:09 | 1468ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-07-25 14:35:26 | 9508ms | 2 NS 2 A 1 MX | ❓ Unknown |
| 2026-06-26 09:01:16 | 1315ms | 2 NS 2 A 1 MX | 🔓 Insecure |
| 2026-06-17 18:02:38 | 1721ms | 2 NS 2 A 1 MX | 🔓 Insecure |