strfisk.dk DNS records

🖥️ Nameservers3 records 17ms

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

🌍 A Records1 records 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
51.144.135.21	3600s	—	AS8075	Microsoft Corporation	51.144.0.0/15	🇳🇱 The Netherlands	Amsterdam

📧 MX Records2 records 22ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	strfisk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::a 2a01:111:f403:ca04::d 2a01:111:f403:ca09::1 2a01:111:f403:ca38::8 52.101.68.12 52.101.68.36 52.101.68.39 52.101.73.26	mail-du0pr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation
10	3600s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 74ms

TXT Record
MS=ms17339131
v=spf1 include:spf.protection.outlook.com include:web.shared.mysmtp.com include:_spf.smtp.com ~all

✉️ SPF

Policy	Record (strfisk.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:web.shared.mysmtp.com include:_spf.smtp.com ~all

📨 DMARC

Policy	Record (_dmarc.strfisk.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc-reports@strfisk.dk; ruf=mailto:dmarc-reports@strfisk.dk

📬 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 / DANE2 records 699ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC97ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082700
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

17ms

A

29ms

MX

22ms

AAAA

21ms

TXT

74ms

CAA

21ms

HTTPS

31ms

TLSA

699ms

SOA

0ms

MTA-STS

34ms

DNSSEC

97ms

SRV

34ms

Total

1200ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 22:01:21	1200ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 09:29:40	2557ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-23 14:32:15	943ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-22 10:36:05	1313ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-19 21:25:16	610ms	3 NS 1 A 2 MX	🔒 Secure	View
2026-06-17 14:01:40	2292ms	3 NS 1 A 2 MX	🔒 Secure	View