delff.dk DNS records

🖥️ Nameservers2 records 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.domainteam.dk	87.238.248.151	ns.domainteam.dk	AS198614 RockyNordic ApS
ns2.domainteam.dk	185.200.74.103	ns2.domainteam.dk	AS198614 RockyNordic ApS

🌍 A Records

🌍

No A records found

📧 MX Records3 records 35ms

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
10	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
10	3600s	mx03.kolabnow.com	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	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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 237ms

TXT Record
v=spf1 include:spf-a.rockynordic.com -all
v=spf1 mx -all

✉️ SPF

⚠ Multiple SPF records — RFC 7208 §4.5 violation (receivers must treat this as permerror)

Policy	Record (delff.dk)
-all (hard fail)	v=spf1 include:spf-a.rockynordic.com -all
-all (hard fail)	v=spf1 mx -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 / DANE6 records 151ms

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…
SMTP _25._tcp.mx03.kolabnow.com	DANE-EE · Full cert · SHA-256	41B01929AFEBCF769577C1B3B9D41F0B…
SMTP _25._tcp.mx03.kolabnow.com	DANE-EE · Full cert · SHA-256	C48641B0A3AA38C42B6C5BFD42A25D63…

🔐 DNSSEC68ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA41ms

Field	Value
Serial	2025030101
Primary NS (MNAME)	ns.domainteam.dk
Responsible (RNAME)	hostmaster@domainteam.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

37ms

MX

35ms

AAAA

61ms

TXT

237ms

CAA

42ms

HTTPS

36ms

TLSA

151ms

SOA

41ms

MTA-STS

64ms

DNSSEC

68ms

SRV

75ms

Total

1180ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-27 22:54:11	1180ms	2 NS 0 A 3 MX	🔓 Insecure	View
2026-06-25 10:37:22	1013ms	2 NS 0 A 3 MX	🔓 Insecure	View
2026-06-24 11:03:39	1149ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 18:00:05	1105ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-22 23:03:41	1152ms	2 NS 0 A 3 MX	🔓 Insecure	View
2026-06-17 01:36:36	3306ms	2 NS 0 A 3 MX	🔓 Insecure	View