classicroom.dk DNS records

🖥️ Nameservers2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
betty.ns.cloudflare.com	108.162.192.75 172.64.32.75 173.245.58.75 2606:4700:50::adf5:3a4b 2803:f800:50::6ca2:c04b 2a06:98c1:50::ac40:204b	betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com betty.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
gordon.ns.cloudflare.com	108.162.193.170 172.64.33.170 173.245.59.170 2606:4700:58::adf5:3baa 2803:f800:50::6ca2:c1aa 2a06:98c1:50::ac40:21aa	gordon.ns.cloudflare.com gordon.ns.cloudflare.com gordon.ns.cloudflare.com gordon.ns.cloudflare.com gordon.ns.cloudflare.com gordon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.74.153	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.203.222	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:4a99	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:cbde	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 45ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.74.153,172.67.203.222 ech=AEX+DQBBmQAgACBZ1XJ1Wx4OpIsqzky8Kl2n/l8VEWk+oWIVV9Aa4EncNAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4a99,2606:4700:3033::ac43:cbde

📝 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)

🔐 DNSSEC82ms

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	2413001195
Primary NS (MNAME)	betty.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

40ms

A

40ms

MX

50ms

AAAA

39ms

TXT

184ms

CAA

44ms

HTTPS

45ms

TLSA

51ms

SOA

0ms

MTA-STS

67ms

DNSSEC

82ms

SRV

63ms

Total

516ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-04 06:20:06	516ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-24 03:24:16	3180ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-22 00:01:54	1554ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-13 11:54:31	8764ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-07-19 03:09:22	24703ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-20 13:19:29	504ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-16 21:06:21	466ms	2 NS 2 A 0 MX	🔓 Insecure	View