studiecoach.dk

📜 Historical scan 2026-07-26 01:33:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

studiecoach.dk is a .dk domain served by 3 nameservers (dns1.rackhosting.com, dns2.rackhosting.com, dns3.rackhosting.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 77.247.77.143 is hosted by Rackhosting.com ApS (AS31590) in Denmark. Mail is handled by mail.studiecoach.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#

3 records 80ms

Nameserver	IP addresses	PTR	ASN / ISP
dns1.rackhosting.com	77.247.69.212	dns1.rackhosting.com	AS31590 Rackhosting.com ApS
dns2.rackhosting.com	45.32.187.211	dns2.rackhosting.com	AS20473 The Constant Company, LLC
dns3.rackhosting.com	77.247.69.213	dns3.rackhosting.com	AS31590 Rackhosting.com ApS

🌍 A Records#

1 records 63ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.247.77.143	900s	vps138.rackhosting.com	AS31590	Rackhosting.com ApS	77.247.64.0/20	🇩🇰 Denmark	—

📧 MX Records#

1 records 81ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	900s	mail.studiecoach.dk	77.247.77.143	vps138.rackhosting.com	AS31590 Rackhosting.com ApS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 349ms

TXT Record
v=spf1 mx ip4:77.247.73.192/26 a:studiecoach.dk -all

✉️ SPF#

Policy	Record (studiecoach.dk)
-all (hard fail)	v=spf1 mx ip4:77.247.73.192/26 a:studiecoach.dk -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 2026-10-17 14:50:17

www	77.247.77.143 (AS31590) (address records, no CNAME)
www vs bare domain	Same network studiecoach.dk: 77.247.77.143 (AS31590) www.studiecoach.dk: 77.247.77.143 (AS31590)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 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#

173ms

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

🏷️ SOA#

79ms

Field	Value
Serial	1632993815
Primary NS (MNAME)	dns3.rackhosting.com
Responsible (RNAME)	f\@k\.p.galnet.dk
Refresh	900s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	10800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

80ms

63ms

81ms

AAAA

79ms

TXT

349ms

CAA

80ms

HTTPS

76ms

TLSA

87ms

SOA

79ms

MTA-STS

62ms

DNSSEC

173ms

SRV

108ms

Total

16780ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 00:06:51	589ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 23:15:42	417ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-23 21:55:19	898ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-16 21:41:40	897ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-26 01:33:27 shown	16780ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 12:00:54	751ms	3 NS 1 A 1 MX	🔓 Insecure