knudtzon.dk DNS records

🖥️ Nameservers4 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.189	420s	linux299.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx.spamfilter.io	46.36.212.34 46.36.212.36 46.36.212.37 46.36.212.38 89.188.78.64 89.188.78.65 89.188.78.66 94.231.106.12	node4.spamfilter.io node8.spamfilter.io node6.spamfilter.io node7.spamfilter.io node3.spamfilter.io node9.spamfilter.io node10.spamfilter.io node2.spamfilter.io	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 98ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	webmail.lasertryk.dk

📝 TXT Records5 records 187ms

TXT Record
_dmarc
google-site-verification=Qa_aICkcsL1epceoDpu-thKenGQxSuSgWNjsk6s95Y4
L0A0S94995
MS=ms37767962
v=spf1 ip4:94.231.99.1/24 ip4:93.191.155.36 ip4:185.221.37.72 ip4:195.178.171.92 ip4:93.191.152.168 ip4:94.231.99.20 ip4:91.198.138.133 ip4:94.231.111.170 include:spf.nextlevel.dk include:spf.ubivox.com include:spf.comendosystems.com include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (knudtzon.dk)
-all (hard fail)	v=spf1 ip4:94.231.99.1/24 ip4:93.191.155.36 ip4:185.221.37.72 ip4:195.178.171.92 ip4:93.191.152.168 ip4:94.231.99.20 ip4:91.198.138.133 ip4:94.231.111.170 include:spf.nextlevel.dk include:spf.ubivox.com include:spf.comendosystems.com include:spf.protection.outlook.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

🔗 TLSA / DANE1 records 55ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.spamfilter.io	DANE-EE · SPKI · SHA-256	9A25F05F2E322DABDCC9B7A06AB47A2D…

🔐 DNSSEC160ms

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

🏷️ SOA0ms

Field	Value
Serial	2026070701
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

48ms

A

42ms

MX

45ms

AAAA

58ms

TXT

187ms

CAA

81ms

HTTPS

68ms

TLSA

55ms

SOA

0ms

MTA-STS

147ms

DNSSEC

160ms

SRV

98ms

Total

673ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 03:34:23	673ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-07-09 05:43:09	9275ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 03:43:22	960ms	4 NS 1 A 1 MX	🔒 Secure	View