studieboeger.dk

📜 Historical scan 2026-06-21 17:54:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

studieboeger.dk is a .dk domain served by 2 nameservers (fish.ns.cloudflare.com, pranab.ns.cloudflare.com). It was registered on 23 January 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.mahoje.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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 56ms

Nameserver	IP addresses	PTR	ASN / ISP
fish.ns.cloudflare.com	108.162.194.252 162.159.38.252 172.64.34.252 2606:4700:50::a29f:26fc 2803:f800:50::6ca2:c2fc 2a06:98c1:50::ac40:22fc	fish.ns.cloudflare.com fish.ns.cloudflare.com fish.ns.cloudflare.com fish.ns.cloudflare.com fish.ns.cloudflare.com fish.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
pranab.ns.cloudflare.com	108.162.195.199 162.159.44.199 172.64.35.199 2606:4700:58::a29f:2cc7 2803:f800:50::6ca2:c3c7 2a06:98c1:50::ac40:23c7	pranab.ns.cloudflare.com pranab.ns.cloudflare.com pranab.ns.cloudflare.com pranab.ns.cloudflare.com pranab.ns.cloudflare.com pranab.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 61ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.114.96.9	300s	—	AS13335	—	—	—	—
188.114.97.9	300s	—	AS13335	—	—	—	—

📧 MX Records#

1 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.mahoje.dk	89.167.70.15	mail.mahoje.dk	AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.mahoje.dk → 89.167.70.15
🔶 Autoconfig	mail.mahoje.dk → 89.167.70.15

🔷 AAAA Records (IPv6)#

2 records 47ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a06:98c1:3120::9	300s	—	AS13335	—	—	—	—
2a06:98c1:3121::9	300s	—	AS13335	—	—	—	—

🔐 HTTPS Records#

1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=188.114.96.9,188.114.97.9 ech=AEX+DQBBwAAgACBcatv0vcdu5GkpvPstOSLsHt4RtzmMTrUkgy4nfjAxUQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::9,2a06:98c1:3121::9

🔌 SRV Records#

1 records 261ms

Service	Priority	Weight	Port	Target
_imaps._tcp	0	1	993	mail.mahoje.dk

📝 TXT Records#

1 records 183ms

TXT Record
v=spf1 mx -all

✉️ SPF#

Policy	Record (studieboeger.dk)
-all (hard fail)	v=spf1 mx -all

📨 DMARC#

Policy	Record (_dmarc.studieboeger.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:postmaster@studieboeger.dk

📬 MTA-STS#

237ms

Check	Result
Status	🧪 Testing
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	testing
Policy ID	9698806436038367355
max_age	604800s
Policy MX	mail.mahoje.dk

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:postmaster@studieboeger.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-12 05:34:51

www	104.21.15.245 172.67.165.85 2606:4700:3031::6815:ff5 2606:4700:3035::ac43:a555 (AS13335) (address records, no CNAME)
www vs bare domain	Same network studieboeger.dk: 104.21.15.245 172.67.165.85 2606:4700:3031::6815:ff5 2606:4700:3035::ac43:a555 (AS13335) www.studieboeger.dk: 104.21.15.245 172.67.165.85 2606:4700:3031::6815:ff5 2606:4700:3035::ac43:a555 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.studieboeger.dk	Htu2EgSsf3u9I5QK6wH3cy3mNI7WsCGRt-cIHMIW2Co

🔗 TLSA / DANE#

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

🔐 DNSSEC#

155ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2407478024
Primary NS (MNAME)	fish.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-04 16:35:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-01-23
Expires	2027-01-22 (92d)

📋 WHOIS#

⏱️ Lookup Timing#

56ms

61ms

60ms

AAAA

47ms

TXT

183ms

CAA

67ms

HTTPS

45ms

TLSA

300ms

SOA

0ms

MTA-STS

237ms

DNSSEC

155ms

SRV

261ms

Total

880ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 16:07:45	991ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-03 16:05:31	1077ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-02 19:08:39	806ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 18:43:09	963ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 17:57:25	682ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 13:10:00	713ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 12:39:32	630ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 18:22:50	1900ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-11 15:24:39	1282ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 18:27:15	627ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 15:29:36	1636ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-23 01:26:15	1232ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 13:29:27	1254ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-22 07:31:32	17724ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 21:53:52	1082ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 17:54:42 shown	880ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 05:39:40	788ms	2 NS 2 A 1 MX	🔓 Insecure