studiebooster.dk DNS records

🖥️ Nameservers2 records 45ms

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 Records2 records 55ms

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 Records5 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a 64.233.165.27	lt-in-x1a.1e100.net lt-in-f26.1e100.net lg-in-f27.1e100.net	AS15169 Google LLC 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	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1a	yukulwh-in-f26.1e100.net mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
10	300s	alt3.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	alt4.aspmx.l.google.com	108.177.125.27 2404:6800:4008:c01::1a	tp-in-f27.1e100.net tp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.66.133
🔶 Autoconfig	104.21.66.133

🔷 AAAA Records (IPv6)2 records 45ms

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 Records1 records 37ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.66.133,172.67.160.99 ech=AEX+DQBBSwAgACB8hS7XGTvwvsw2I2tpNnL/N/Dx/JBih2q1hmm6BxbXYgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4285,2606:4700:3031::ac43:a063

📝 TXT Records1 records 239ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC126ms

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

🏷️ SOA0ms

Field	Value
Serial	2410893118
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

45ms

A

55ms

MX

45ms

AAAA

45ms

TXT

239ms

CAA

47ms

HTTPS

37ms

TLSA

113ms

SOA

0ms

MTA-STS

100ms

DNSSEC

126ms

SRV

82ms

Total

1070ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 05:34:40	1070ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-26 07:03:51	9836ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-08-01 02:15:44	1404ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-07-17 16:29:48	10408ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-24 07:20:50	1057ms	2 NS 2 A 5 MX	❓ Unknown	View
2026-06-23 06:55:52	1155ms	2 NS 2 A 5 MX	🔓 Insecure	View
2026-06-18 07:11:48	1051ms	2 NS 2 A 5 MX	🔓 Insecure	View