devzero.dk DNS records

🖥️ Nameservers2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records

🌍

No A records found

📧 MX Records2 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx01.kolabnow.com	185.254.79.30 185.254.79.31	kolabnow.com kolabnow.com	AS15576 NTS workspace AG AS15576 NTS workspace AG
20	3600s	mx02.kolabnow.com	185.254.79.30 185.254.79.31 185.254.79.32 185.254.79.33 185.254.79.34 185.254.79.35 185.254.79.36 185.254.79.37 185.254.79.38 185.254.79.39 185.254.79.40 185.254.79.41 185.254.79.42 185.254.79.43 185.254.79.44 185.254.79.45 185.254.79.46 185.254.79.47	kolabnow.com kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com mx.kolabnow.com	AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG AS15576 NTS workspace AG

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	home.devzero.dk → 5.186.123.243
🔶 Autoconfig	home.devzero.dk → 5.186.123.243

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 169ms

TXT Record
v=spf1 mx mx:mykolab.com mx:kolabnow.com -all

✉️ SPF

Policy	Record (devzero.dk)
-all (hard fail)	v=spf1 mx mx:mykolab.com mx:kolabnow.com -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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.devzero.dk	home.devzero.dk

🔗 TLSA / DANE4 records 107ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx01.kolabnow.com	DANE-EE · Full cert · SHA-256	41B01929AFEBCF769577C1B3B9D41F0B…
SMTP _25._tcp.mx01.kolabnow.com	DANE-EE · Full cert · SHA-256	C48641B0A3AA38C42B6C5BFD42A25D63…
SMTP _25._tcp.mx02.kolabnow.com	DANE-EE · Full cert · SHA-256	C48641B0A3AA38C42B6C5BFD42A25D63…
SMTP _25._tcp.mx02.kolabnow.com	DANE-EE · Full cert · SHA-256	41B01929AFEBCF769577C1B3B9D41F0B…

🔐 DNSSEC83ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2026081001
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

35ms

A

37ms

MX

51ms

AAAA

40ms

TXT

169ms

CAA

38ms

HTTPS

47ms

TLSA

107ms

SOA

0ms

MTA-STS

60ms

DNSSEC

83ms

SRV

67ms

Total

2033ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 14:58:23	2135ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-08-28 10:20:16	1046ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-08-26 18:10:21	2033ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-08-11 01:43:10	4878ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-07-15 17:39:20	1969ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-07-11 06:02:08	2307ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-06-17 02:38:57	3270ms	2 NS 0 A 2 MX	🔒 Secure	View
2026-06-17 02:31:05	1120ms	2 NS 0 A 2 MX	🔒 Secure	View