jsuengineering.dk

📜 Historical scan 2026-08-25 10:57:09  ·  ← 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 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.

🖥️ Nameservers#

2 records   33ms
NameserverIP addressesPTRASN / 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   27ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   29ms
PriorityTTLMail ServerIP addressesPTRASN
0 3600s jsuengineering-dk.mail.protection.outlook.com 2a01:111:f403:ca04::4
2a01:111:f403:ca04::9
2a01:111:f403:ca09::c
2a01:111:f403:ca48::8
52.101.68.12
52.101.68.3
52.101.73.26
52.101.73.6		 mail-db4pr02cu00204.inbound.protection.outlook.com
mail-db7pr03cu00601.inbound.protection.outlook.com
mail-as8pr05cu00304.inbound.protection.outlook.com
mail-miypr02cu00100.inbound.protection.outlook.com
mail-db9pr02cu00204.inbound.protection.outlook.com
mail-db7pr03cu00403.inbound.protection.outlook.com
mail-as9pr05cu01302.inbound.protection.outlook.com
mail-am6pr04cu00306.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#

ServiceCNAME / IP
🔷 Autodiscoverautodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig104.21.65.128

🔷 AAAA Records (IPv6)#

2 records   36ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   37ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.65.128,172.67.145.109 ech=AEX+DQBBsQAgACCgLhcIuy3fqEuNGgfUAMEy4nXJGfFjRnmDovkpP+QkBwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:916d,2606:4700:3037::6815:4180

📝 TXT Records#

3 records   169ms
TXT Record
MS=ms17632145
MS=ms95495152
v=spf1 include:spf.protection.outlook.com include:dedicated.mysmtp.com -all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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
www104.21.65.128 172.67.145.109 2606:4700:3032::ac43:916d 2606:4700:3037::6815:4180 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: 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#

108ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2410394600
Primary NS (MNAME)dimitris.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-13 15:07:20
FieldValue
RegistrarWorkDigital ApS
Registered2020-08-20
Expires2027-08-31 (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#

NS
33ms
A
27ms
MX
29ms
AAAA
36ms
TXT
169ms
CAA
49ms
HTTPS
37ms
TLSA
697ms
SOA
0ms
MTA-STS
49ms
DNSSEC
108ms
SRV
73ms
Total
1468ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 shown 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
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