jacobs-elteknik.dk

📜 Historical scan 2026-09-24 12:53:00 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jacobs-elteknik.dk is a .dk domain served by 2 nameservers (barbara.ns.cloudflare.com, justin.ns.cloudflare.com). It was registered on 1 July 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.95.173 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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 46ms

Nameserver	IP addresses	PTR	ASN / ISP
barbara.ns.cloudflare.com	108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8	barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.95.173	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.146.181	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	173.194.221.27 2a00:1450:4010:c0a::1a 2a00:1450:4010:c0a::1a	lm-in-f27.1e100.net lm-in-x1a.1e100.net lm-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 36ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:92b5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::6815:5fad	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.95.173,172.67.146.181 ech=AEX+DQBBuAAgACCYfZwa4GZOvwEwgBl5qwPKjQFwsmBznWHeNsmmr5voDgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:92b5,2606:4700:3032::6815:5fad

📝 TXT Records#

1 records 188ms

TXT Record
v=spf1 include:spf.curanet.dk include:_spf.google.com include:spf.simply.com -all

✉️ SPF#

Policy	Record (jacobs-elteknik.dk)
-all (hard fail)	v=spf1 include:spf.curanet.dk include:_spf.google.com include:spf.simply.com -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 18:10:34

www	104.21.95.173 172.67.146.181 2606:4700:3031::ac43:92b5 2606:4700:3032::6815:5fad (AS13335) (address records, no CNAME)
www vs bare domain	Same network jacobs-elteknik.dk: 104.21.95.173 172.67.146.181 2606:4700:3031::ac43:92b5 2606:4700:3032::6815:5fad (AS13335) www.jacobs-elteknik.dk: 104.21.95.173 172.67.146.181 2606:4700:3031::ac43:92b5 2606:4700:3032::6815:5fad (AS13335)
Wildcard	No

🔎 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#

9078ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2411934502
Primary NS (MNAME)	barbara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 18:47:34

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-07-01
Expires	2027-07-31 (281d)

📋 WHOIS#

⏱️ Lookup Timing#

46ms

33ms

34ms

AAAA

36ms

TXT

188ms

CAA

50ms

HTTPS

34ms

TLSA

71ms

SOA

0ms

MTA-STS

54ms

DNSSEC

9078ms

SRV

58ms

Total

9600ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 18:10:34	733ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 07:06:10	744ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 12:53:00 shown	9600ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-11 15:42:42	1488ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-25 14:29:27	3191ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-20 00:16:01	1050ms	4 NS 1 A 5 MX	🔒 Secure
2026-06-17 22:14:15	2330ms	4 NS 1 A 5 MX	🔒 Secure