jacobi.dk

Records from scan: 2026-10-06 14:04:53 · 3006ms total · last checked 2026-10-20 07:30 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jacobi.dk is a .dk domain served by 2 nameservers (jocelyn.ns.cloudflare.com, nicolas.ns.cloudflare.com). It was registered on 16 February 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.33.30 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 132ms

Nameserver	IP addresses	PTR	ASN / ISP
jocelyn.ns.cloudflare.com	108.162.192.174 172.64.32.174 173.245.58.174 2606:4700:50::adf5:3aae 2803:f800:50::6ca2:c0ae 2a06:98c1:50::ac40:20ae	jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com jocelyn.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nicolas.ns.cloudflare.com	108.162.195.84 162.159.44.84 172.64.35.84 2606:4700:58::a29f:2c54 2803:f800:50::6ca2:c354 2a06:98c1:50::ac40:2354	nicolas.ns.cloudflare.com nicolas.ns.cloudflare.com nicolas.ns.cloudflare.com nicolas.ns.cloudflare.com nicolas.ns.cloudflare.com nicolas.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 154ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.33.30	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.140.189	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 95ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	142.251.9.26 2a00:1450:4025:c01::1a	rc-in-f26.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.26 2404:6800:4000:1025::1a	lcbomp-in-f26.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx2.googlemail.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx3.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.33.30
🔶 Autoconfig	172.67.140.189

🔷 AAAA Records (IPv6)#

2 records 110ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:8cbd	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:211e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 103ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.33.30,172.67.140.189 ech=AEX+DQBBfwAgACDUntkPY7Rga9rdu9Y5g2nJfA3bKCI0jDUswrpmVs69ewAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8cbd,2606:4700:3036::6815:211e

📝 TXT Records#

2 records 280ms

TXT Record
google-site-verification=ltT-0tB5p-WVTz9tQGLyRLxQApCavXRItQk9Jyt2b6I
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (jacobi.dk)
~all (soft fail)	v=spf1 include:_spf.google.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#

checked 2026-10-08 14:39:51

www	104.21.33.30 172.67.140.189 2606:4700:3031::ac43:8cbd 2606:4700:3036::6815:211e (AS13335) (address records, no CNAME)
www vs bare domain	Same network jacobi.dk: 104.21.33.30 172.67.140.189 2606:4700:3031::ac43:8cbd 2606:4700:3036::6815:211e (AS13335) www.jacobi.dk: 104.21.33.30 172.67.140.189 2606:4700:3031::ac43:8cbd 2606:4700:3036::6815:211e (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

174ms

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

🏷️ SOA#

72ms

Field	Value
Serial	2416686981
Primary NS (MNAME)	jocelyn.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-06 14:23:30

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-02-16
Expires	2026-10-31 (10d)

📋 WHOIS#

⏱️ Lookup Timing#

132ms

154ms

95ms

AAAA

110ms

TXT

280ms

CAA

131ms

HTTPS

103ms

TLSA

791ms

SOA

72ms

MTA-STS

123ms

DNSSEC

174ms

SRV

141ms

Total

3006ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 14:04:53 shown	3006ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 10:15:40	876ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 08:14:57	871ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 11:28:14	3209ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-24 18:15:39	10256ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-08 20:50:21	1647ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-29 21:55:18	910ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-18 03:35:41	1405ms	2 NS 2 A 5 MX	🔓 Insecure