open-closed.dk DNS records

🖥️ Nameservers2 records 55ms

Nameserver	IP addresses	PTR	ASN / ISP
adrian.ns.cloudflare.com	108.162.192.57 172.64.32.57 173.245.58.57 2606:4700:50::adf5:3a39 2803:f800:50::6ca2:c039 2a06:98c1:50::ac40:2039	adrian.ns.cloudflare.com adrian.ns.cloudflare.com adrian.ns.cloudflare.com adrian.ns.cloudflare.com adrian.ns.cloudflare.com adrian.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jack.ns.cloudflare.com	108.162.193.121 172.64.33.121 173.245.59.121 2606:4700:58::adf5:3b79 2803:f800:50::6ca2:c179 2a06:98c1:50::ac40:2179	jack.ns.cloudflare.com jack.ns.cloudflare.com jack.ns.cloudflare.com jack.ns.cloudflare.com jack.ns.cloudflare.com jack.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
159.69.100.207	60s	static.207.100.69.159.clients.your-server.de	AS24940	Hetzner Online GmbH	159.69.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records1 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.open-closed.dk	159.69.100.207	static.207.100.69.159.clients.your-server.de	AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	159.69.100.207
🔶 Autoconfig	159.69.100.207

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records3 records 184ms

TXT Record
google-site-verification=qSGnyJeYTzcJNduKaaYCjDXHHVEljUei7u2rzcYsrUg
google-site-verification=SS5J89LbY7n7U5QdbbP5phAxXBJelK1BoidJWdCOcXc
v=spf1 a mx ip4:159.69.100.207 ~all

✉️ SPF

Policy	Record (open-closed.dk)
~all (soft fail)	v=spf1 a mx ip4:159.69.100.207 ~all

📨 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	2410645456
Primary NS (MNAME)	adrian.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

55ms

A

44ms

MX

48ms

AAAA

48ms

TXT

184ms

CAA

56ms

HTTPS

54ms

TLSA

167ms

SOA

0ms

MTA-STS

65ms

DNSSEC

82ms

SRV

81ms

Total

1401ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 22:54:25	1401ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-27 06:41:18	807ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-25 11:16:24	739ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-28 03:14:16	941ms	2 NS 1 A 1 MX	❓ Unknown	View
2026-07-20 02:16:26	9945ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-16 18:56:46	1116ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-11 01:22:46	9804ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 02:51:09	5387ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 19:20:42	1181ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 07:52:27	1054ms	2 NS 1 A 1 MX	🔓 Insecure	View