jakobsen-it.dk

📜 Historical scan 2026-08-23 23:47:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jakobsen-it.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.189.133.236 is hosted by Contabo GmbH (AS51167) in France. Mail is handled by mx.zoho.eu, mx2.zoho.eu and 1 more. 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 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.189.133.236	43200s	vmi432237.contaboserver.net	AS51167	Contabo GmbH	5.189.128.0/18	🇫🇷 France	Lauterbourg

📧 MX Records#

3 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx.zoho.eu	185.230.214.166 185.230.214.166 185.230.214.166	mx.zoho.eu mx3.zoho.eu mx2.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V
20	600s	mx2.zoho.eu	185.230.214.166 185.230.214.166 185.230.214.166	mx.zoho.eu mx3.zoho.eu mx2.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V
50	600s	mx3.zoho.eu	185.230.212.166 185.230.212.166 185.230.212.166	mx.zoho.eu mx2.zoho.eu mx3.zoho.eu	AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V AS205111 ZOHO Corporation B.V

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 159ms

TXT Record
v=spf1 include:zohomail.eu ~all
zoho-verification=zb17505089.zmverify.zoho.eu

✉️ SPF#

Policy	Record (jakobsen-it.dk)
~all (soft fail)	v=spf1 include:zohomail.eu ~all

📨 DMARC#

Policy	Record (_dmarc.jakobsen-it.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-09-30 01:52:07

www	Address record (no CNAME)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u18204379.wl130.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u18204379.wl130.sendgrid.net	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: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

70ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026082201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

43ms

46ms

37ms

AAAA

42ms

TXT

159ms

CAA

42ms

HTTPS

51ms

TLSA

332ms

SOA

0ms

MTA-STS

67ms

DNSSEC

70ms

SRV

64ms

Total

1287ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 01:52:07	547ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-28 06:19:16	927ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-25 05:16:23	1198ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-24 05:02:08	1413ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-23 03:45:30	1383ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-18 06:01:21	1336ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-11 10:32:41	1370ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-26 10:03:13	725ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-23 23:47:35 shown	1287ms	2 NS 1 A 3 MX	🔒 Secure
2026-08-14 11:34:52	5085ms	2 NS 1 A 3 MX	🔒 Secure
2026-07-23 14:48:48	1205ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-28 12:48:16	688ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-27 10:00:47	1234ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-27 05:49:22	1429ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 23:12:26	1038ms	2 NS 1 A 3 MX	🔒 Secure