jacobsen.dk

📜 Historical scan 2026-08-31 10:01:41 · ← 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 167.99.248.199 is hosted by DigitalOcean, LLC (AS14061) in Germany. Mail is handled by mx.dka.mailcore.net. The zone is not DNSSEC-signed, 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 240ms

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 179ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
167.99.248.199	300s	m01.webswarm.fra1-03.do.fjordmail.no	AS14061	DigitalOcean, LLC	167.99.0.0/16	🇩🇪 Germany	Frankfurt am Main

📧 MX Records#

1 records 180ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.dka.mailcore.net	185.138.56.198 185.138.56.198 185.138.56.208 185.138.56.208 194.19.134.70 194.19.134.70 194.19.134.80 194.19.134.80 2001:2010:18:1::70 2001:2010:18:1::80 2a07:a80:1::198 2a07:a80:1::208	198.128-255.56.138.185.in-addr.arpa mx.dka.mailcore.net 208.128-255.56.138.185.in-addr.arpa mx.dka.mailcore.net 70.0-127.134.19.194.in-addr.arpa mx.dka.mailcore.net 80.0-127.134.19.194.in-addr.arpa 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 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 AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS34766 atom86 BV AS34766 atom86 BV

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 609ms

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;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

10 records 183ms

Flags	Tag	Value
0	issue	comodoca.com
0	issue	digicert.com; cansignhttpexchanges=yes
0	issue	letsencrypt.org
0	issue	pki.goog; cansignhttpexchanges=yes
0	issue	ssl.com
0	issuewild	comodoca.com
0	issuewild	digicert.com; cansignhttpexchanges=yes
0	issuewild	letsencrypt.org
0	issuewild	pki.goog; cansignhttpexchanges=yes
0	issuewild	ssl.com

🧩 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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.jacobsen.dk	kNbzvVsGowSACUu1AcpWX-yJDlyOaiYjYrX_d1tUj68
TXT	_acme-challenge.jacobsen.dk	owMqmDRYldQzxlZj37xT0yB-Lk9Rl8vOFO2AS5ceVko

🔗 TLSA / DANE#

1 records 174ms

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

🔐 DNSSEC#

363ms

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	2413603409
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#

240ms

179ms

180ms

AAAA

179ms

TXT

609ms

CAA

183ms

HTTPS

179ms

TLSA

174ms

SOA

0ms

MTA-STS

278ms

DNSSEC

363ms

SRV

278ms

Total

4671ms

🕐 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	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 shown	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