jacobolsen.dk

📜 Historical scan 2026-06-17 18:56:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jacobolsen.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 22 May 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by in1-smtp.messagingengine.com, in2-smtp.messagingengine.com. The zone is DNSSEC-signed and validates, has no 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 106ms

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 116ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
78.47.252.189	—	static.189.252.47.78.clients.your-server.de	AS24940	—	—	—	—

📧 MX Records#

2 records 119ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	in1-smtp.messagingengine.com	103.168.172.216 103.168.172.217 103.168.172.218 103.168.172.219 103.168.172.220 103.168.172.221 103.168.172.222 103.168.172.223	phl-mx-01.messagingengine.com phl-mx-02.messagingengine.com phl-mx-03.messagingengine.com phl-mx-04.messagingengine.com phl-mx-05.messagingengine.com phl-mx-06.messagingengine.com phl-mx-07.messagingengine.com phl-mx-08.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd
20	—	in2-smtp.messagingengine.com	202.12.124.216 202.12.124.217 202.12.124.218 202.12.124.219	stl-mx-01.messagingengine.com stl-mx-02.messagingengine.com stl-mx-03.messagingengine.com stl-mx-04.messagingengine.com	AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd AS151847 Fastmail Pty Ltd

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 198ms

TXT Record
v=spf1 include:spf.messagingengine.com ?all

✉️ SPF#

Policy	Record (jacobolsen.dk)
?all (neutral)	v=spf1 include:spf.messagingengine.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 2026-10-13 04:05:34

www	78.47.252.189 (AS24940) (address records, no CNAME)
www vs bare domain	Same network jacobolsen.dk: 78.47.252.189 (AS24940) www.jacobolsen.dk: 78.47.252.189 (AS24940)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

170ms

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

🏷️ SOA#

105ms

Field	Value
Serial	2026061201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-13 04:29:21

Field	Value
Registrar	ONE.COM A/S
Registered	2006-05-22
Expires	2027-05-31 (222d)

📋 WHOIS#

⏱️ Lookup Timing#

106ms

116ms

119ms

AAAA

98ms

TXT

198ms

CAA

90ms

HTTPS

108ms

TLSA

594ms

SOA

105ms

MTA-STS

97ms

DNSSEC

170ms

SRV

0ms

Total

1416ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 04:05:34	782ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-16 05:07:19	1237ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-12 19:55:56	1574ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-18 12:59:48	1294ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-16 06:06:44	3293ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-25 18:31:42	2623ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-22 15:05:24	1108ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 18:56:06 shown	1416ms	2 NS 1 A 2 MX	🔒 Secure