jsuengineering.dk

📜 Historical scan 2026-07-25 14:35:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

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 of unknown DNSSEC status, 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.

🖥️ Nameservers#

2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
dimitris.ns.cloudflare.com	108.162.195.6 162.159.44.6 172.64.35.6 2606:4700:58::a29f:2c06 2803:f800:50::6ca2:c306 2a06:98c1:50::ac40:2306	dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com dimitris.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ursula.ns.cloudflare.com	108.162.194.191 162.159.38.191 172.64.34.191 2606:4700:50::a29f:26bf 2803:f800:50::6ca2:c2bf 2a06:98c1:50::ac40:22bf	ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com ursula.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 45ms

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	—	—

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	jsuengineering-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca09::9 2a01:111:f403:ca09::c 52.101.73.1 52.101.73.153 52.101.73.4 52.101.73.8	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.149.136
🔶 Autoconfig	188.114.97.1

🔷 AAAA Records (IPv6)#

2 records 43ms

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	—	—

🔐 HTTPS Records#

1 records 40ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.65.128,172.67.145.109 ech=AEX+DQBBiQAgACA9OlQ1lx8WBinYc9R8TMZci027kMfs7SgEA4D/dcuLdAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:916d,2606:4700:3037::6815:4180

📝 TXT Records#

3 records 8412ms

TXT Record
MS=ms17632145
MS=ms95495152
v=spf1 include:spf.protection.outlook.com include:dedicated.mysmtp.com -all

✉️ SPF#

Policy	Record (jsuengineering.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:dedicated.mysmtp.com -all

📨 DMARC#

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

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 10:25:46

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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

142ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'jsuengineering.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

0ms

Field	Value
Serial	2410394600
Primary NS (MNAME)	dimitris.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 15:07:20

Field	Value
Registrar	WorkDigital ApS
Registered	2020-08-20
Expires	2027-08-31 (315d)

🔗 Same registrant#

0 domains

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

📋 WHOIS#

⏱️ Lookup Timing#

48ms

45ms

43ms

AAAA

43ms

TXT

8412ms

CAA

39ms

HTTPS

40ms

TLSA

187ms

SOA

0ms

MTA-STS

51ms

DNSSEC

142ms

SRV

119ms

Total

9508ms

🕐 Scan History#

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	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 shown	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