studiebooster.dk

📜 Historical scan 2026-06-18 07:11:48 · ← 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 37ms

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 37ms

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

📧 MX Records#

5 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	—	aspmx.l.google.com	142.251.9.27 2a00:1450:4010:c0f::1b 2a00:1450:4010:c0f::1b	rc-in-f27.1e100.net lt-in-x1b.1e100.net lt-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	—	alt1.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1b	so-in-f27.1e100.net so-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	—	alt2.aspmx.l.google.com	108.177.125.26 2404:6800:4008:c01::1a	tp-in-f26.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt3.aspmx.l.google.com	108.177.125.27 2404:6800:400b:c01b::1a	tp-in-f27.1e100.net yunrtab-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	—	alt4.aspmx.l.google.com	173.194.43.27 2607:f8b0:400e:c1e::1a	yudlsqd-in-f27.1e100.net yudlsqd-in-f26.1e100.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 209ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:4285	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:a063	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 52ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.133,172.67.160.99 ech=AEX+DQBBXgAgACBYdqEg9t+ceUEOewqh+wmq9pQHyffrmdwg5FCZq2THbwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:4285,2606:4700:3036::ac43:a063

📝 TXT Records#

1 records 192ms

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#

222ms

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

🏷️ SOA#

69ms

Field	Value
Serial	2405794952
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#

37ms

56ms

AAAA

209ms

TXT

192ms

CAA

54ms

HTTPS

52ms

TLSA

143ms

SOA

69ms

MTA-STS

38ms

DNSSEC

222ms

SRV

188ms

Total

1051ms

🕐 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	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 shown	1051ms	2 NS 2 A 5 MX	🔓 Insecure