kryptoundervisning.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
agustin.ns.cloudflare.com	108.162.195.90 162.159.44.90 172.64.35.90 2606:4700:58::a29f:2c5a 2803:f800:50::6ca2:c35a 2a06:98c1:50::ac40:235a	agustin.ns.cloudflare.com agustin.ns.cloudflare.com agustin.ns.cloudflare.com agustin.ns.cloudflare.com agustin.ns.cloudflare.com agustin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
venus.ns.cloudflare.com	108.162.192.235 172.64.32.235 173.245.58.235 2606:4700:50::adf5:3aeb 2803:f800:50::6ca2:c0eb 2a06:98c1:50::ac40:20eb	venus.ns.cloudflare.com venus.ns.cloudflare.com venus.ns.cloudflare.com venus.ns.cloudflare.com venus.ns.cloudflare.com venus.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 56ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.30.135	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.172.244	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.30.135
🔶 Autoconfig	104.21.30.135

🔷 AAAA Records (IPv6)2 records 63ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:1e87	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:acf4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 49ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.30.135,172.67.172.244 ech=AEX+DQBB/AAgACBaY3xXTjHGn020myaHmA0UDNM1FWVR3m9nS/VJiWGkRwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:1e87,2606:4700:3037::ac43:acf4

📝 TXT Records

📝

No TXT records found

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 DNSSEC76ms

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	2411663263
Primary NS (MNAME)	agustin.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

35ms

A

56ms

MX

45ms

AAAA

63ms

TXT

235ms

CAA

57ms

HTTPS

49ms

TLSA

65ms

SOA

0ms

MTA-STS

68ms

DNSSEC

76ms

SRV

88ms

Total

735ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 21:37:37	735ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-09 20:12:53	1127ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-23 18:09:33	806ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-28 04:57:43	673ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-25 19:12:03	907ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-25 11:25:41	2714ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-18 03:19:32	774ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-18 02:58:27	713ms	2 NS 2 A 0 MX	🔓 Insecure	View