cph-open.dk DNS records

🖥️ Nameservers3 records 64ms

Nameserver	IP addresses	PTR	ASN / ISP
linux3.dform.dk	2a01:4f8:1c1a:22c5::1 91.98.139.7	— linux3.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns1.dform.dk	2a01:4f8:c17:5dd1::1 88.99.33.43	ns1.dform.dk ns1.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns2.dform.dk	2a01:4f9:c010:18ac::1 65.21.180.171	ns2.dform.dk ns2.dform.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records1 records 64ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.98.139.7	3600s	linux3.dform.dk	AS24940	Hetzner Online GmbH	91.98.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records7 records 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	aspmx.l.google.com	142.251.1.27 2a00:1450:4010:c02::1a 2a00:1450:4010:c02::1a	lb-in-f27.1e100.net le-in-x1a.1e100.net le-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC
5	3600s	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
5	3600s	alt2.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	3600s	aspmx2.googlemail.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
10	3600s	aspmx3.googlemail.com	172.253.158.27 2404:6800:4003:c26::1a	so-in-f27.1e100.net so-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	3600s	aspmx4.googlemail.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
10	3600s	aspmx5.googlemail.com	192.178.230.27 2404:6800:400b:c01b::1a	yunrtab-in-f27.1e100.net yunrtab-in-f26.1e100.net	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 Records1 records 319ms

TXT Record
v=spf1 ip4:91.98.139.7 ip6:2a01:4f8:120:444b::2 include:aspmx.googlemail.com include:servers.mcsv.net ~all

✉️ SPF

Policy	Record (cph-open.dk)
~all (soft fail)	v=spf1 ip4:91.98.139.7 ip6:2a01:4f8:120:444b::2 include:aspmx.googlemail.com include:servers.mcsv.net ~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 Records1 records 52ms

Flags	Tag	Value
0	issuewild	letsencrypt.org

🔗 TLSA / DANE

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

🔐 DNSSEC112ms

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

🏷️ SOA62ms

Field	Value
Serial	2026012000
Primary NS (MNAME)	linux3.dform.dk
Responsible (RNAME)	root@linux3.dform.dk
Refresh	3600s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

64ms

A

64ms

MX

54ms

AAAA

65ms

TXT

319ms

CAA

52ms

HTTPS

60ms

TLSA

71ms

SOA

62ms

MTA-STS

90ms

DNSSEC

112ms

SRV

204ms

Total

1014ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-27 02:13:27	1014ms	3 NS 1 A 7 MX	🔓 Insecure	View
2026-06-26 07:20:45	988ms	3 NS 1 A 7 MX	🔓 Insecure	View
2026-06-24 09:56:16	987ms	3 NS 1 A 7 MX	❓ Unknown	View
2026-06-19 22:44:58	2360ms	3 NS 1 A 7 MX	🔓 Insecure	View
2026-06-16 22:47:21	954ms	3 NS 1 A 7 MX	🔓 Insecure	View
2026-06-16 22:41:04	923ms	3 NS 1 A 7 MX	🔓 Insecure	View