onlinesystems.dk

📜 Historical scan 2026-06-17 13:01:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

onlinesystems.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 23 October 2003 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.onlinesystems.dk. 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#

3 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.onlinesystems.dk	46.32.54.36	mail.matronics.dk	AS39642 Sinal A/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 131ms

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

✉️ SPF#

Policy	Record (onlinesystems.dk)
?all (neutral)	v=spf1 include:spf.mandrillapp.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 2026-10-12 13:42:42

www	NXDOMAIN
www vs bare domain	Neither resolves onlinesystems.dk: no address www.onlinesystems.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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: 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#

80ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

93ms

Field	Value
Serial	2020072990
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 13:58:24

Field	Value
Registrar	Simply.com A/S
Registered	2003-10-23
Expires	2026-10-31 (7d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
homeassistant.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

32ms

61ms

49ms

AAAA

77ms

TXT

131ms

CAA

56ms

HTTPS

56ms

TLSA

137ms

SOA

93ms

MTA-STS

47ms

DNSSEC

80ms

SRV

0ms

Total

751ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 13:42:41	1163ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-01 02:10:33	680ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-23 11:07:54	667ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-17 13:01:32 shown	751ms	3 NS 0 A 1 MX	🔒 Secure