classmates.dk DNS records

🖥️ Nameservers2 records 53ms

Nameserver	IP addresses	PTR	ASN / ISP
dexter.ns.cloudflare.com	108.162.195.190 162.159.44.190 172.64.35.190 2606:4700:58::a29f:2cbe 2803:f800:50::6ca2:c3be 2a06:98c1:50::ac40:23be	dexter.ns.cloudflare.com dexter.ns.cloudflare.com dexter.ns.cloudflare.com dexter.ns.cloudflare.com dexter.ns.cloudflare.com dexter.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
robin.ns.cloudflare.com	108.162.192.218 172.64.32.218 173.245.58.218 2606:4700:50::adf5:3ada 2803:f800:50::6ca2:c0da 2a06:98c1:50::ac40:20da	robin.ns.cloudflare.com robin.ns.cloudflare.com robin.ns.cloudflare.com robin.ns.cloudflare.com robin.ns.cloudflare.com robin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.40.36.76	300s	static.76.36.40.188.clients.your-server.de	AS24940	Hetzner Online GmbH	188.40.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records5 records 79ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	aspmx.l.google.com	2a00:1450:4010:c02::1a 2a00:1450:4010:c02::1a 64.233.162.26	le-in-x1a.1e100.net le-in-f26.1e100.net li-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
20	300s	alt1.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
20	300s	alt2.aspmx.l.google.com	173.194.41.26 173.194.41.26 2404:6800:4001:c01::1b	mad01s14-in-f26.1e100.net yukulwh-in-f26.1e100.net yukulwh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx2.googlemail.com	192.178.158.26 2404:6800:4013:813::1b	lcdels-in-f26.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
30	300s	aspmx3.googlemail.com	173.194.41.27 173.194.41.27 2404:6800:4001:c01::1a	mad01s14-in-f27.1e100.net yukulwh-in-f27.1e100.net yukulwh-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 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)

🔐 DNSSEC88ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2413053999
Primary NS (MNAME)	dexter.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

53ms

A

43ms

MX

79ms

AAAA

59ms

TXT

211ms

CAA

42ms

HTTPS

71ms

TLSA

102ms

SOA

0ms

MTA-STS

73ms

DNSSEC

88ms

SRV

107ms

Total

911ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 18:54:19	911ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-27 04:10:12	965ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-24 21:06:04	17760ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-10 02:35:39	1769ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-08-02 02:10:56	1244ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-24 04:55:34	10170ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-08 22:24:22	2545ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-07-01 08:55:51	1033ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-24 20:10:54	2958ms	2 NS 1 A 5 MX	🔒 Secure	View
2026-06-16 21:05:22	954ms	2 NS 1 A 5 MX	🔒 Secure	View