studiebooster.dk

📜 Historical scan 2026-07-17 16:29:48 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

studiebooster.dk is a .dk domain served by 2 nameservers (dara.ns.cloudflare.com, mario.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.66.133 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. 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 39ms

Nameserver	IP addresses	PTR	ASN / ISP
dara.ns.cloudflare.com	108.162.192.91 172.64.32.91 173.245.58.91 2606:4700:50::adf5:3a5b 2803:f800:50::6ca2:c05b 2a06:98c1:50::ac40:205b	dara.ns.cloudflare.com dara.ns.cloudflare.com dara.ns.cloudflare.com dara.ns.cloudflare.com dara.ns.cloudflare.com dara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mario.ns.cloudflare.com	108.162.193.203 172.64.33.203 173.245.59.203 2606:4700:58::adf5:3bcb 2803:f800:50::6ca2:c1cb 2a06:98c1:50::ac40:21cb	mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.ns.cloudflare.com mario.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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.66.133	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.160.99	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c1e::1b 64.233.161.27	lb-in-f27.1e100.net lh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	172.253.158.26 2404:6800:4003:c26::1b	so-in-f26.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1b	tp-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	alt4.aspmx.l.google.com	192.178.230.27 2404:6800:400b:c01b::1b	yunrtab-in-f27.1e100.net yunrtab-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.67.160.99
🔶 Autoconfig	104.21.66.133

🔷 AAAA Records (IPv6)#

2 records 49ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4285	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3031::ac43:a063	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 31ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.133,172.67.160.99 ech=AEX+DQBB2gAgACDdGXq0rJF+bd5LM3CRD016rLlGsafUbGoQHXnM8UVuQQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4285,2606:4700:3031::ac43:a063

📝 TXT Records#

1 records 190ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (studiebooster.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.studiebooster.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:postmaster@studiebooster.dk

📬 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 2026-10-09 12:14:22

www	104.21.66.133 172.67.160.99 2606:4700:3031::6815:4285 2606:4700:3031::ac43:a063 (AS13335) (address records, no CNAME)
www vs bare domain	Same network studiebooster.dk: 104.21.66.133 172.67.160.99 2606:4700:3031::6815:4285 2606:4700:3031::ac43:a063 (AS13335) www.studiebooster.dk: 104.21.66.133 172.67.160.99 2606:4700:3031::6815:4285 2606:4700:3031::ac43:a063 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

9059ms

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	2409712184
Primary NS (MNAME)	dara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

39ms

32ms

AAAA

49ms

TXT

190ms

CAA

31ms

HTTPS

31ms

TLSA

152ms

SOA

0ms

MTA-STS

47ms

DNSSEC

9059ms

SRV

55ms

Total

10408ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 12:14:22	1051ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-30 01:37:14	674ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-28 09:48:53	960ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-24 09:09:07	843ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 05:29:59	3128ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-20 19:32:36	1051ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-27 05:34:40	1070ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-26 07:03:51	9836ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-01 02:15:44	1404ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-17 16:29:48 shown	10408ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-24 07:20:50	1057ms	2 NS 2 A 5 MX	❓ Unknown
2026-06-23 06:55:52	1155ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-18 07:11:48	1051ms	2 NS 2 A 5 MX	🔓 Insecure