onlineitkursus.dk

📜 Historical scan 2026-07-20 09:16:34 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

onlineitkursus.dk is a .dk domain served by 4 nameservers (ns1.dn-s.nl, ns2.dn-s.nl, ns3.dn-s.nl and 1 more). It was registered on 14 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 136.144.212.108 is hosted by Signet B.V. (AS20857) in The Netherlands. Mail is handled by mail.onlineitkursus.dk. The zone is not DNSSEC-signed, 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#

4 records 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dn-s.nl	185.104.28.19 2a06:2ec0:1::10	ns1.zxcs.nl ns1.zxcs.nl	AS206281 Stichting DIGI NL AS206281 Stichting DIGI NL
ns2.dn-s.nl	2a03:b0c0:3:d0::116:2001 46.101.179.64	ns2.zxcs.nl ns2.zxcs.nl	AS14061 DigitalOcean, LLC AS14061 DigitalOcean, LLC
ns3.dn-s.nl	178.62.208.8 2a03:b0c0:2:d0::57:1001	ns3.zxcs.nl ns3.zxcs.nl	AS14061 DigitalOcean, LLC AS14061 DigitalOcean, LLC
ns4.dn-s.nl	185.220.172.14 2a06:2ec0:1:a::d53	ns.zxcs.de ns.zxcs.de	AS206281 Stichting DIGI NL AS206281 Stichting DIGI NL

🌍 A Records#

1 records 91ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
136.144.212.108	300s	parking.hostingserver.nl	AS20857	Signet B.V.	136.144.128.0/17	🇳🇱 The Netherlands	—

📧 MX Records#

1 records 104ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.onlineitkursus.dk	136.144.212.108	parking.hostingserver.nl	AS20857 Signet B.V.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	136.144.212.108
🔶 Autoconfig	mail.hostingserver.nl → 89.41.169.107

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 2256ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	mail.hostingserver.nl

📝 TXT Records#

1 records 2915ms

TXT Record
v=spf1 a mx a:webmail.hostingserver.nl include:_spf.premiumantispam.nl ~all

✉️ SPF#

Policy	Record (onlineitkursus.dk)
~all (soft fail)	v=spf1 a mx a:webmail.hostingserver.nl include:_spf.premiumantispam.nl ~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 2026-10-24 17:50:28

www	136.144.212.108 (AS20857) (address records, no CNAME)
www vs bare domain	Same network onlineitkursus.dk: 136.144.212.108 (AS20857) www.onlineitkursus.dk: 136.144.212.108 (AS20857)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

231ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2021010100
Primary NS (MNAME)	ns1.dn-s.nl
Responsible (RNAME)	hostmaster@onlineitkursus.dk
Refresh	600s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-24 00:20:04

Field	Value
Registrar	Key-Systems GmbH
Registered	2016-11-14
Expires	2026-11-30 (35d)

🔗 Same registrant#

0 domains

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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

41ms

91ms

104ms

AAAA

113ms

TXT

2915ms

CAA

89ms

HTTPS

100ms

TLSA

122ms

SOA

0ms

MTA-STS

179ms

DNSSEC

231ms

SRV

2256ms

Total

3631ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-24 17:50:28	4562ms	4 NS 1 A 1 MX	🔓 Insecure
2026-10-02 15:38:13	3765ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-20 07:39:08	6875ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-10 03:48:53	6831ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-26 15:44:54	6425ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-22 12:34:27	5015ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-21 11:44:37	22472ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-20 09:16:34 shown	3631ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-08 04:47:51	14136ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-29 06:43:02	2055ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 12:55:13	5600ms	4 NS 1 A 1 MX	🔓 Insecure