jacobsen.dk

📜 Historical scan 2026-09-30 06:56:04 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jacobsen.dk is a .dk domain served by 2 nameservers (sage.ns.cloudflare.com, veronica.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 68.183.243.94 is hosted by DigitalOcean, LLC (AS14061) in Germany. Mail is handled by mx.dka.mailcore.net. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 73ms

Nameserver	IP addresses	PTR	ASN / ISP
sage.ns.cloudflare.com	108.162.195.236 162.159.44.236 172.64.35.236 2606:4700:58::a29f:2cec 2803:f800:50::6ca2:c3ec 2a06:98c1:50::ac40:23ec	sage.ns.cloudflare.com sage.ns.cloudflare.com sage.ns.cloudflare.com sage.ns.cloudflare.com sage.ns.cloudflare.com sage.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
veronica.ns.cloudflare.com	108.162.194.173 162.159.38.173 172.64.34.173 2606:4700:50::a29f:26ad 2803:f800:50::6ca2:c2ad 2a06:98c1:50::ac40:22ad	veronica.ns.cloudflare.com veronica.ns.cloudflare.com veronica.ns.cloudflare.com veronica.ns.cloudflare.com veronica.ns.cloudflare.com veronica.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 61ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
68.183.243.94	300s	—	AS14061	DigitalOcean, LLC	68.183.0.0/16	🇩🇪 Germany	Frankfurt am Main

📧 MX Records#

1 records 52ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.dka.mailcore.net	185.138.56.198 185.138.56.208 194.19.134.70 194.19.134.80 2001:2010:18:1::70 2001:2010:18:1::80 2a07:a80:1::198 2a07:a80:1::208	mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net mx.dka.mailcore.net	AS34766 atom86 BV AS34766 atom86 BV AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS34766 atom86 BV AS34766 atom86 BV

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	68.183.243.94
🔶 Autoconfig	68.183.243.94

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

1 records 76ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2"

🔌 SRV Records#

2 records 87ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	autodiscover.jacobsen.dk
_imaps._tcp	10	10	993	imap.jubii.dk

📝 TXT Records#

1 records 217ms

TXT Record
v=spf1 include:spf.lytzenitmail.dk include:spf.mailcore.net ip4:212.242.40.0/21 -all

✉️ SPF#

Policy	Record (jacobsen.dk)
-all (hard fail)	v=spf1 include:spf.lytzenitmail.dk include:spf.mailcore.net ip4:212.242.40.0/21 -all

📨 DMARC#

Policy	Record (_dmarc.jacobsen.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s; fo=1; sp=reject; ruf=mailto:postmaster@jacobsen.dk; rua=mailto:50603e2620a54c398e450eb0e20c544f@dmarc-reports.cloudflare.net;

📬 MTA-STS#

246ms

Check	Result
Status	🧪 Testing
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	testing
Policy ID	20260925000000
max_age	86400s
Policy MX	mx.dka.mailcore.net

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:tlsrpt@inbox.com

📜 CAA Records#

2 records 72ms

Flags	Tag	Value
128	iodef	mailto:caa.iodef@inbox.com
128	issue	letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-17 01:22:55

www	68.183.243.94 (AS14061) (address records, no CNAME)
www vs bare domain	Same network jacobsen.dk: 68.183.243.94 (AS14061) www.jacobsen.dk: 68.183.243.94 (AS14061)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

1 records 124ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.dka.mailcore.net	DANE-EE · SPKI · SHA-256	40F9D37C5916C036178AC4588F4425C9…

🔐 DNSSEC#

178ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

42ms

Field	Value
Serial	2416189426
Primary NS (MNAME)	sage.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

73ms

61ms

52ms

AAAA

65ms

TXT

217ms

CAA

72ms

HTTPS

76ms

TLSA

124ms

SOA

42ms

MTA-STS

246ms

DNSSEC

178ms

SRV

87ms

Total

1228ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 01:22:55	1917ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 10:19:52	6513ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 06:56:04 shown	1228ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 06:16:10	1135ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-27 05:58:20	909ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 04:54:13	930ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 13:17:28	1083ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-19 04:52:05	1365ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-12 03:19:00	2780ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-03 13:08:37	1306ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-31 10:01:41	4671ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-29 12:37:18	3358ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-25 21:32:50	3858ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-22 19:13:10	2050ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-21 15:28:46	1174ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 04:15:42	1932ms	2 NS 1 A 1 MX	🔓 Insecure