onlineitkursus.dk DNS records

🖥️ Nameservers4 records 45ms

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 Records1 records 61ms

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 Records1 records 50ms

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 Records1 records 189ms

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

📝 TXT Records1 records 313ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC2082ms

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

🏷️ SOA50ms

Field	Value
Serial	2024082006
Primary NS (MNAME)	ns1.dn-s.nl
Responsible (RNAME)	nic@virtualregistrar.nl
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

45ms

A

61ms

MX

50ms

AAAA

79ms

TXT

313ms

CAA

61ms

HTTPS

96ms

TLSA

178ms

SOA

50ms

MTA-STS

129ms

DNSSEC

2082ms

SRV

189ms

Total

6875ms

🕐 Scan History

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