studiebooster.dk

📜 Historical scan 2026-06-24 07:20:50 · ← 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 of unknown DNSSEC status, 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 55ms

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 68ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.66.133	600s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.160.99	600s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	aspmx.l.google.com	209.85.233.27 2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b	lr-in-f27.1e100.net lr-in-f27.1e100.net lr-in-x1b.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	600s	alt1.aspmx.l.google.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	600s	alt2.aspmx.l.google.com	172.253.158.27 2404:6800:4008:c01::1b	so-in-f27.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	600s	alt3.aspmx.l.google.com	192.178.230.26 2404:6800:4008:c01::1b	yunrtab-in-f26.1e100.net tp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	600s	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 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:4285	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:a063	600s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 32ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.133,172.67.160.99 ech=AEX+DQBBJgAgACDEe6fH/MJxGPU11bgPwmf+lAkTmGqNq0Y5foUuVoe/cwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:4285,2606:4700:3036::ac43:a063

📝 TXT Records#

1 records 210ms

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#

72ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'studiebooster.dk/DS/IN': 127.0.0.1#53

🏷️ SOA#

55ms

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#

55ms

68ms

48ms

AAAA

34ms

TXT

210ms

CAA

36ms

HTTPS

32ms

TLSA

88ms

SOA

55ms

MTA-STS

34ms

DNSSEC

72ms

SRV

91ms

Total

1057ms

🕐 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 shown	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